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MagyarLG Gram SuperSlim (2023) review: 990 gram laptop with long battery life and OLED display
"Even lighter and slimmer," announces the slogan of the LG Gram SuperSlim. The newest model of the ultracompact Gram series represents one of the lightest (990 g, 2.18 lb) and slimmest (≤ 12,55 mm, ~0.49 in) 15.6-inch laptops on the market. It even beats its already slim and light siblings in terms of thickness and weight. The hardware is at the current level: PCIe 4, LPDDR5, OLED, and Thunderbolt 4, with a Raptor Lake processor running the laptop.
Our database doesn't include any direct competitors, since comparable laptops are usually more affordable and/or bring more weight to the scale. The expanded range of competitors include devices such as the Samsung Galaxy Book3 Pro 14, the Lenovo ThinkPad X1 Carbon G11, the Acer Swift Edge SFE16-42, and the Apple MacBook Air 15.
Possible Competitors in Comparison
Rating | Date | Model | Weight | Height | Size | Resolution | Best Price |
|---|---|---|---|---|---|---|---|
| 85 % | 07/2023 | LG Gram SuperSlim (2023) i7-1360P, Iris Xe G7 96EUs | 990 g | 10.9 mm | 15.60" | 1920x1080 | |
| 85.6 % | 05/2023 | Samsung Galaxy Book3 Pro 14 i7-1360P, Iris Xe G7 96EUs | 1.2 kg | 11.3 mm | 14.00" | 2880x1800 | |
| 88.9 % | 06/2023 | Lenovo ThinkPad X1 Carbon G11-21HNS00000 i7-1365U, Iris Xe G7 96EUs | 1.2 kg | 15.36 mm | 14.00" | 1920x1200 | |
| 87.5 % | 06/2023 | Acer Swift Edge SFE16-42-R1GM R7 7735U, Radeon 680M | 1.2 kg | 13.95 mm | 16.00" | 3840x2400 | |
| 85.9 % | 12/2022 | LG Gram 15Z90Q i5-1240P, Iris Xe G7 80EUs | 1.1 kg | 17.4 mm | 15.60" | 1920x1080 | |
| 91.8 % | 06/2023 | Apple MacBook Air 15 2023 M2 16 GB M2, M2 10-Core GPU | 1.5 kg | 11.5 mm | 15.30" | 2880x1864 |
Case - Slim magnesium case
The dark blue (Neptune Blue) case of the Gram is made from a magnesium alloy, with LG using smooth and matte surfaces. The laptop doesn't have any design features that stand out. While it resembles the usual Gram models, its corners are slightly more rounded. The battery, which is screwed and not glued, and the rest of the insides are accessible after removing the bottom of the case.
The laptop doesn't show any faults in the workmanship. The gaps are even, and there are no noticeable material protrusions. The base unit and, even more so, the lid can be warped. The hinges hold the lid tightly in place, with a maximum opening angle of about 130 degrees. The lid can be opened using a single hand.
Within our comparison field, the Gram is the lightest laptop at a weight of 990 grams (~2.18 lb). In terms of the thickness (between 10.99 and 12.55 mm without the feet, ~0.43 - 0.49 in), the competitors range within similar levels. We are able to confirm the values specified by LG, measuring a weight of 988 grams (2.178 lb) on our scale.
Equipment - The Gram offers Thunderbolt 4
The types of connections are very reduced, consisting of an audio-combo port and three USB-C ports (2x Thunderbolt 4/USB 4, 1x USB 3.2 Gen 2). This means that many external devices such as a monitor cannot be used without a docking solution or corresponding adapter. A positive point is that all three USB-C ports support Power Delivery and are able to output a DisplayPort signal - we tested this.
The connections are placed in the back area on the left and right sides, leaving the areas next to the palm rests free from any potential cables.
Communication
Under optimal conditions without any other WLAN devices nearby and a close distance between the laptop and server PC, the LG laptop reaches excellent WiFi data rates. The laptop uses an Intel AX211 WiFi 6E chip but doesn't offer an Ethernet port.
Webcam
In terms of its quality, the webcam (2.1 MP, max. 1,920 x 1,080 pixels) is unable to differentiate itself from the competitors. However, at a deviation of 6 (with a target ≤ 3), the color accuracy can be called decent, with the competitors offering worse values. The camera doesn't offer a mechanical shutter.
Accessories
Aside from the usual documents (with warranty information and the quick-start instructions), the laptop doesn't include any additional accessories.
Maintenance
To access the hardware, you have to remove the bottom of the case. Some of the screws that have to be removed are covered by glued-on platelets (see picture), and some additional screws are hidden underneath the four rubber feet (stuck on, not glued). After removing all the screws, you need to carefully (!) loosen the bottom of the case - it is delicate and could otherwise be damaged. To do that, a flat prying tool would be useful. After removing the bottom, you get access to the SSD (PCIe 4, M.2 2280), the second SSD slot (PCIe 4, M.2 2280), the fan, the speakers, and the battery.
Warranty
LG offers a two-year warranty for the 15.6-inch laptop in Germany. To expand the warranty to five years would cost a one-time fee of 159 Euros (~$175; or 4.29 Euros, ~$4.73 monthly).
Input Devices - LG laptop with keyboard illumination
Keyboard
The illuminated chiclet keyboard includes a number block that only offers three instead of the usual four columns. The smooth and flat keys offer a short stroke and clear pressure point. The key resistance is okay. Even though the keyboard has some slight bounce while typing, this didn't turn out to create any hindrance. Overall, LG delivers a keyboard suitable for everyday typing tasks here.
Touchpad
A ClickPad (~11.1 x 7 cm, ~4.37 x 2.76 in) whose smooth surface facilitates sliding of the fingers serves as the mouse replacement. It offers a short stroke and clear pressure point.
Display - OLED panel with DCI-P3 and AdobeRGB coverage
The 15.6-inch display with a 1,920 x 1,080 pixel resolution in the 16:9 format offers an OLED-typical, excellent black value and short response times. The brightness exceeds the target of > 300 cd/m². An anti-glare coating ensures reduced reflections.
| |||||||||||||||||||||||||
Brightness Distribution: 97 %
Contrast: 3950:1 (Black: 0.1 cd/m²)
ΔE Color 2.2 | 0.5-29.43 Ø5, calibrated: 4.65
ΔE Greyscale 1.78 | 0.57-98 Ø5.3
98.09% AdobeRGB 1998 (Argyll 2.2.0 3D)
100% sRGB (Argyll 2.2.0 3D)
99.8% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.39
| LG Gram SuperSlim (2023) Samsung ATNA56YX08-0, OLED, 1920x1080, 15.60 | Samsung Galaxy Book3 Pro 14 Samsung ATNA40CU02-0, AMOLED, 2880x1800, 14.00 | Lenovo ThinkPad X1 Carbon G11-21HNS00000 B140UAN02.1, IPS, 1920x1200, 14.00 | Acer Swift Edge SFE16-42-R1GM Samsung SDC4168, OLED, 3840x2400, 16.00 | LG Gram 15Z90Q LG LP156WFC-SPZ2 (LGD0706), IPS, 1920x1080, 15.60 | Apple MacBook Air 15 2023 M2 16 GB IPS, 2880x1864, 15.30 | |
|---|---|---|---|---|---|---|
| Display | -1% | -15% | -0% | -25% | -4% | |
| Display P3 Coverage | 99.8 | 99.7 0% | 75.4 -24% | 99.7 0% | 63.5 -36% | 98.7 -1% |
| sRGB Coverage | 100 | 100 0% | 99.6 0% | 100 0% | 95 -5% | 99.9 0% |
| AdobeRGB 1998 Coverage | 98.09 | 95.7 -2% | 77.3 -21% | 97.2 -1% | 65.1 -34% | 87.9 -10% |
| Response Times | 85% | -2573% | -25% | -1600% | -1093% | |
| Response Time Grey 50% / Grey 80% * | 2 ? | 0.5 ? 75% | 64.4 ? -3120% | 2 ? -0% | 48.4 ? -2320% | 28.8 ? -1340% |
| Response Time Black / White * | 2 ? | 0.1 ? 95% | 42.5 ? -2025% | 3 ? -50% | 19.6 ? -880% | 18.9 ? -845% |
| PWM Frequency | 240 ? | 239 ? | ||||
| Screen | 111% | -42% | 3% | -40% | -14% | |
| Brightness middle | 395 | 409 4% | 379 -4% | 369 -7% | 420 6% | 517 31% |
| Brightness | 392 | 410 5% | 383 -2% | 371 -5% | 399 2% | 501 28% |
| Brightness Distribution | 97 | 99 2% | 91 -6% | 97 0% | 88 -9% | 93 -4% |
| Black Level * | 0.1 | 0.01 90% | 0.21 -110% | 0.32 -220% | 0.39 -290% | |
| Contrast | 3950 | 40900 935% | 1805 -54% | 1313 -67% | 1326 -66% | |
| Colorchecker dE 2000 * | 2.2 | 2.36 -7% | 3.2 -45% | 2.3 -5% | 2.51 -14% | 1.2 45% |
| Colorchecker dE 2000 max. * | 4.43 | 4.07 8% | 7.3 -65% | 4.37 1% | 6.64 -50% | 2.5 44% |
| Colorchecker dE 2000 calibrated * | 4.65 | 3.16 32% | 1.7 63% | 2.87 38% | 0.89 81% | 0.8 83% |
| Greyscale dE 2000 * | 1.78 | 3.06 -72% | 4.5 -153% | 1.83 -3% | 3.3 -85% | 1.8 -1% |
| Gamma | 2.39 92% | 2.49 88% | 2.19 100% | 2.39 92% | 2.052 107% | 2.24 98% |
| CCT | 6284 103% | 6882 94% | 6249 104% | 6392 102% | 6921 94% | |
| Total Average (Program / Settings) | 65% /
83% | -877% /
-398% | -7% /
-3% | -555% /
-259% | -370% /
-166% |
* ... smaller is better
In the state of delivery, the display offers a good color reproduction, and with a deviation of around 2.2, the target value of DeltaE < 3 is met. An additional calibration doesn't offer any further improvements. All the important color spaces (AdobeRGB, sRGB, and DisplayP3) are reproduced almost completely, so color accuracy is a given.
Display Response Times
| ↔ Response Time Black to White | ||
|---|---|---|
| 2 ms ... rise ↗ and fall ↘ combined | ↗ 1 ms rise |  |
| ↘ 1 ms fall | ||
| The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 6 % of all devices are better. This means that the measured response time is better than the average of all tested devices (21.5 ms). | ||
| ↔ Response Time 50% Grey to 80% Grey | ||
| 2 ms ... rise ↗ and fall ↘ combined | ↗ 1 ms rise |  |
| ↘ 1 ms fall | ||
| The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming. In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 5 % of all devices are better. This means that the measured response time is better than the average of all tested devices (33.7 ms). | ||
Screen Flickering / PWM (Pulse-Width Modulation)
| Screen flickering / PWM not detected |  | ||
In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 17903 (minimum: 5 - maximum: 3846000) Hz was measured. | |||
The viewing angles of the IPS panel are stable, allowing it to be read from almost any angle. Outdoors, you can recognize the contents of the panel when the sunlight isn't too bright.
Performance - The 15Z90RT is run by Raptor Lake
With the Gram SuperSlim, LG offers a highly mobile office laptop for private and business users. The laptop delivers sufficient computing performance for office and Internet applications, as well as less demanding games. The model of our test unit is available for about 1,600 Euros (~$1,763). Other models are not available at the time of this test.
Test Conditions
The Notebook offers four manufacturer specific cooling modes (see table) that affect the cooling, noise level, and power limits. You can switch between the modes using either the "Fn" + "Q" key combination or the LG Smart Assistant, which is the control center of the laptop. We used the "Normal" cooling mode during our testing.
| High | Normal | Low | Silent | |
|---|---|---|---|---|
| Power Limit 1 (HWInfo) | 28 Watt | 26 Watt | 12 Watt | 8 Watt |
| Power Limit 2 (HWInfo) | 43 Watt | 43 Watt | 43 Watt | 43 Watt |
Processor
The Raptor Lake Core i7-1360P processor consists of four performance cores (hyperthreading, 2.2 to 5 GHz) and eight efficiency cores (no hyperthreading, 1.6 to 3.7 GHz), resulting in a total of 16 logical CPU cores.
The benchmarks deliver results that are below the average of the CPU we've seen so far. Selecting the "High" cooling mode results in a performance increase that is limited at best. The more relevant single-thread performance is reduced in battery operation (164 points), while the multithread performance remains at the same level as in mains operation (1,623 points).
The CB15 loop test shows that constant multithread load leads to a Turbo speed reduction in each additional run and to some variations. Selecting the "High" cooling mode helps a little here: From the first to the seventh run, the speed drops but then levels out at a relatively constant level.
Cinebench R15 Multi Constant Load Test
* ... smaller is better
AIDA64: FP32 Ray-Trace | FPU Julia | CPU SHA3 | CPU Queen | FPU SinJulia | FPU Mandel | CPU AES | CPU ZLib | FP64 Ray-Trace | CPU PhotoWorxx
| Performance Rating | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average of class Office | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram SuperSlim (2023) | |
| LG Gram 15Z90Q | |
| AIDA64 / FP32 Ray-Trace | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P (5610 - 11188, n=17) | |
| Average of class Office (763 - 24250, n=120, last 2 years) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| LG Gram SuperSlim (2023) | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram 15Z90Q | |
| AIDA64 / FPU Julia | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P (29251 - 56942, n=16) | |
| Average of class Office (4027 - 102228, n=120, last 2 years) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram SuperSlim (2023) | |
| LG Gram 15Z90Q | |
| AIDA64 / CPU SHA3 | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P (1444 - 2728, n=16) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average of class Office (279 - 4442, n=119, last 2 years) | |
| LG Gram 15Z90Q | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram SuperSlim (2023) | |
| AIDA64 / CPU Queen | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P (65324 - 89266, n=16) | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram 15Z90Q | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average of class Office (8031 - 113016, n=120, last 2 years) | |
| LG Gram SuperSlim (2023) | |
| AIDA64 / FPU SinJulia | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (404 - 14288, n=120, last 2 years) | |
| Average Intel Core i7-1360P (4370 - 7269, n=16) | |
| LG Gram SuperSlim (2023) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram 15Z90Q | |
| AIDA64 / FPU Mandel | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (2054 - 54365, n=120, last 2 years) | |
| Average Intel Core i7-1360P (14104 - 28019, n=16) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| LG Gram SuperSlim (2023) | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram 15Z90Q | |
| AIDA64 / CPU AES | |
| Average Intel Core i7-1360P (30391 - 99244, n=16) | |
| Samsung Galaxy Book3 Pro 14 | |
| Average of class Office (5226 - 147611, n=120, last 2 years) | |
| Acer Swift Edge SFE16-42-R1GM | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| LG Gram 15Z90Q | |
| LG Gram SuperSlim (2023) | |
| AIDA64 / CPU ZLib | |
| Acer Swift Edge SFE16-42-R1GM | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average Intel Core i7-1360P (420 - 807, n=16) | |
| Average of class Office (67.6 - 1018, n=120, last 2 years) | |
| LG Gram 15Z90Q | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram SuperSlim (2023) | |
| AIDA64 / FP64 Ray-Trace | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P (2906 - 5957, n=16) | |
| Average of class Office (432 - 12755, n=120, last 2 years) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| LG Gram SuperSlim (2023) | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram 15Z90Q | |
| AIDA64 / CPU PhotoWorxx | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| LG Gram 15Z90Q | |
| Average Intel Core i7-1360P (29108 - 49328, n=16) | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram SuperSlim (2023) | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (4814 - 48177, n=120, last 2 years) | |
System Performance
The smoothly running system delivers sufficient performance for office and Internet applications, as well as less demanding games (low settings). However, the laptop isn't designed for constant high load. The transfer rates of the working memory (LPDDR5-6000) remain below the potential of the modules. The memory cannot be expanded.
CrossMark: Overall | Productivity | Creativity | Responsiveness
| PCMark 10 / Score | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs (5360 - 6281, n=14) | |
| LG Gram SuperSlim (2023) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Samsung Galaxy Book3 Pro 14 | |
| Average of class Office (2325 - 7157, n=105, last 2 years) | |
| LG Gram 15Z90Q | |
| PCMark 10 / Essentials | |
| LG Gram SuperSlim (2023) | |
| Average Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs (9883 - 12059, n=14) | |
| Samsung Galaxy Book3 Pro 14 | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average of class Office (5095 - 20841, n=105, last 2 years) | |
| LG Gram 15Z90Q | |
| Acer Swift Edge SFE16-42-R1GM | |
| PCMark 10 / Productivity | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (3041 - 10198, n=105, last 2 years) | |
| Average Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs (6572 - 8161, n=14) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| LG Gram SuperSlim (2023) | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram 15Z90Q | |
| PCMark 10 / Digital Content Creation | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs (5723 - 7612, n=14) | |
| LG Gram SuperSlim (2023) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Samsung Galaxy Book3 Pro 14 | |
| Average of class Office (1912 - 9056, n=105, last 2 years) | |
| LG Gram 15Z90Q | |
| CrossMark / Overall | |
| Average Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs (1527 - 1891, n=15) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| LG Gram SuperSlim (2023) | |
| Samsung Galaxy Book3 Pro 14 | |
| Apple MacBook Air 15 2023 M2 16 GB | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (348 - 1891, n=106, last 2 years) | |
| CrossMark / Productivity | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs (1503 - 1842, n=15) | |
| LG Gram SuperSlim (2023) | |
| Samsung Galaxy Book3 Pro 14 | |
| Apple MacBook Air 15 2023 M2 16 GB | |
| Average of class Office (393 - 1870, n=106, last 2 years) | |
| Acer Swift Edge SFE16-42-R1GM | |
| CrossMark / Creativity | |
| Average Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs (1558 - 2003, n=15) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Apple MacBook Air 15 2023 M2 16 GB | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram SuperSlim (2023) | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (340 - 1982, n=106, last 2 years) | |
| CrossMark / Responsiveness | |
| LG Gram SuperSlim (2023) | |
| Samsung Galaxy Book3 Pro 14 | |
| Average Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs (1311 - 1899, n=15) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average of class Office (258 - 2017, n=106, last 2 years) | |
| Acer Swift Edge SFE16-42-R1GM | |
| Apple MacBook Air 15 2023 M2 16 GB | |
| PCMark 8 Home Score Accelerated v2 | 4830 points | |
| PCMark 8 Work Score Accelerated v2 | 3281 points | |
| PCMark 10 Score | 5819 points | |
Help | ||
| AIDA64 / Memory Copy | |
| LG Gram 15Z90Q | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Samsung Galaxy Book3 Pro 14 | |
| Average Intel Core i7-1360P (44299 - 72748, n=16) | |
| LG Gram SuperSlim (2023) | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (7158 - 88119, n=121, last 2 years) | |
| AIDA64 / Memory Read | |
| LG Gram 15Z90Q | |
| Samsung Galaxy Book3 Pro 14 | |
| Average Intel Core i7-1360P (44751 - 68945, n=16) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| LG Gram SuperSlim (2023) | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (7325 - 87297, n=121, last 2 years) | |
| AIDA64 / Memory Write | |
| Samsung Galaxy Book3 Pro 14 | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average Intel Core i7-1360P (45887 - 93331, n=16) | |
| LG Gram SuperSlim (2023) | |
| LG Gram 15Z90Q | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average of class Office (7579 - 94965, n=121, last 2 years) | |
| AIDA64 / Memory Latency | |
| LG Gram 15Z90Q | |
| LG Gram SuperSlim (2023) | |
| Acer Swift Edge SFE16-42-R1GM | |
| Average Intel Core i7-1360P (85 - 110.5, n=16) | |
| Average of class Office (44.3 - 188.3, n=122, last 2 years) | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Samsung Galaxy Book3 Pro 14 | |
* ... smaller is better
DPC Latencies
Our standardized Latency Monitor test (web surfing, 4k video reproduction, Prime95 high load) revealed some conspicuous behavior. The system doesn't appear to be suited for real-time video and audio processing. Future software updates might lead to some improvements or may even make things worse.
| DPC Latencies / LatencyMon - interrupt to process latency (max), Web, Youtube, Prime95 | |
| Acer Swift Edge SFE16-42-R1GM | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Samsung Galaxy Book3 Pro 14 | |
| LG Gram SuperSlim (2023) | |
| LG Gram 15Z90Q | |
* ... smaller is better
Storage Solution
A 1-TB SSD (PCIe 4, M.2 2280) from SK Hynix serves as the system drive and delivers excellent data rates overall. Thermally related throttling occurs only rarely. The Gram also offers space for a second PCIe 4 SSD.
* ... smaller is better
Disk Throttling: DiskSpd Read Loop, Queue Depth 8
Graphics Card
The Iris-Xe G7 iGPU offers 96 execution units, supports DirectX 12, and reaches a maximum clock speed of 1,400 MHz. According to our The Witcher 3 test, the latter is reached sporadically at best, with the clock speed varying between 1,000 and 1,400 MHz ("High" cooling mode). While the GPU is able to run briefly at higher clock speeds with the "Normal" mode activated, the speed then quickly drops to about 800 MHz. Dependent on which mode is selected, the 3DMark results range either above ("High," "Normal") or below ("Low," "Silent") the average of the iGPU used here.
| 3DMark 06 Standard Score | 29112 points | |
| 3DMark 11 Performance | 7241 points | |
| 3DMark Cloud Gate Standard Score | 22475 points | |
| 3DMark Fire Strike Score | 4716 points | |
| 3DMark Time Spy Score | 1512 points | |
Help | ||
Gaming Performance
The Gram is no gaming laptop. However, it is still able to bring some less demanding games to the screen smoothly at low settings. The frame rates range above the average of the iGPU used.
| The Witcher 3 - 1366x768 Medium Graphics & Postprocessing | |
| LG Gram SuperSlim (2023) | |
| Average Intel Iris Xe Graphics G7 96EUs (21.4 - 74.1, n=180) | |
| Samsung Galaxy Book3 Pro 14 | |
| Lenovo ThinkPad X1 Carbon G11-21HNS00000 | |
| Average of class Office (7.82 - 106.3, n=96, last 2 years) | |
| LG Gram 15Z90Q | |
In order to evaluate whether the frame rates remain constant to a large extent over a longer time period, we run the game "The Witcher 3" for about 60 minutes in Full-HD resolution at maximum quality settings. The gaming character is not moved during this time. The frame rates are not within a playable range, and after a few minutes, the values drop to an even lower level. The "High" cooling mode results in varying frame rates.
The Witcher 3 FPS Chart
| low | med. | high | ultra | |
| The Witcher 3 (2015) | 84.9 | 53.5 | 28.2 | 15.1 |
| Dota 2 Reborn (2015) | 118.1 | 84.2 | 65.3 | 58.1 |
| Final Fantasy XV Benchmark (2018) | 41.8 | 22.6 | 16.5 | |
| X-Plane 11.11 (2018) | 50.1 | 42 | 37.7 | |
| Strange Brigade (2018) | 88.1 | 40.1 | 27.4 | 24.3 |
| F1 22 (2022) | 41.5 | 37.3 | 27.5 | 20.7 |
Emissions - The Gram SuperSlim doesn't produce too much noise
Noise Levels
Using the "Normal" cooling mode leads to a maximum noise level of 43.3 dB(A) - a level that is slightly too high for a simple office laptop. The "Low" and "Silent" modes lower the noise levels significantly, but this goes to the detriment of the performance. In everyday operation (Office, e-mail, banking, etc.), the laptop runs quietly or silently regardless of the selected cooling mode.
Noise Level
| Idle |
| 25.2 / 25.2 / 25.2 dB(A) |
| Load |
| 43.1 / 43.3 dB(A) |
 | ||
30 dB silent 40 dB(A) audible 50 dB(A) loud |
||
min:  , med:  , max:  Earthworks M23R, Arta (15 cm distance) environment noise: 25.2 dB(A) | ||
| LG Gram SuperSlim (2023) Iris Xe G7 96EUs, i7-1360P, SK hynix PC801 HFS001TEJ9X101N | Samsung Galaxy Book3 Pro 14 Iris Xe G7 96EUs, i7-1360P, WD PC SN740 512GB SDDPMQD-512G-1101 | Lenovo ThinkPad X1 Carbon G11-21HNS00000 Iris Xe G7 96EUs, i7-1365U, WDC PC SN810 1TB | Acer Swift Edge SFE16-42-R1GM Radeon 680M, R7 7735U, Micron 3400 1TB MTFDKBA1T0TFH | LG Gram 15Z90Q Iris Xe G7 80EUs, i5-1240P, Samsung PM9A1 MZVL21T0HCLR | Apple MacBook Air 15 2023 M2 16 GB M2 10-Core GPU, M2, Apple SSD AP1024Z | |
|---|---|---|---|---|---|---|
| Noise | -6% | 0% | -4% | 2% | ||
| off / environment * | 25.2 | 25.2 -0% | 24.8 2% | 25.7 -2% | 25 1% | |
| Idle Minimum * | 25.2 | 25.2 -0% | 24.8 2% | 25.7 -2% | 26 -3% | |
| Idle Average * | 25.2 | 25.2 -0% | 24.8 2% | 27 -7% | 27 -7% | |
| Idle Maximum * | 25.2 | 32 -27% | 28.5 -13% | 29.3 -16% | 28 -11% | |
| Load Average * | 43.1 | 45.25 -5% | 39.6 8% | 42.3 2% | 37 14% | |
| Load Maximum * | 43.3 | 45.3 -5% | 42.7 1% | 42.7 1% | 37 15% | |
| Witcher 3 ultra * | 42.7 | 37 |
* ... smaller is better
Temperatures
Under load, the laptop warms up in some spots significantly but only moderately overall. We measure a maximum of 50.4 °C (~123 °F) in one spot during the stress test. In everyday operation, the temperatures remain within the green range.
(±) The maximum temperature on the upper side is 43.9 °C / 111 F, compared to the average of 34.2 °C / 94 F, ranging from 21.2 to 62.5 °C for the class Office.
(-) The bottom heats up to a maximum of 50.4 °C / 123 F, compared to the average of 36.7 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 29.6 °C / 85 F, compared to the device average of 29.5 °C / 85 F.
(±) Playing The Witcher 3, the average temperature for the upper side is 34.9 °C / 95 F, compared to the device average of 29.5 °C / 85 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 31 °C / 87.8 F and are therefore cool to the touch.
(-) The average temperature of the palmrest area of similar devices was 27.7 °C / 81.9 F (-3.3 °C / -5.9 F).
| LG Gram SuperSlim (2023) Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs | Samsung Galaxy Book3 Pro 14 Intel Core i7-1360P, Intel Iris Xe Graphics G7 96EUs | Lenovo ThinkPad X1 Carbon G11-21HNS00000 Intel Core i7-1365U, Intel Iris Xe Graphics G7 96EUs | Acer Swift Edge SFE16-42-R1GM AMD Ryzen 7 7735U, AMD Radeon 680M | LG Gram 15Z90Q Intel Core i5-1240P, Intel Iris Xe Graphics G7 80EUs | Apple MacBook Air 15 2023 M2 16 GB Apple M2, Apple M2 10-Core GPU | |
|---|---|---|---|---|---|---|
| Heat | 7% | 18% | 5% | 18% | 18% | |
| Maximum Upper Side * | 43.9 | 43.9 -0% | 44.4 -1% | 49.4 -13% | 46 -5% | 45.1 -3% |
| Maximum Bottom * | 50.4 | 50.7 -1% | 45.3 10% | 44.7 11% | 45 11% | 42.5 16% |
| Idle Upper Side * | 35.8 | 30.8 14% | 24.9 30% | 34 5% | 25 30% | 25.9 28% |
| Idle Bottom * | 37.5 | 31.6 16% | 25.7 31% | 31.6 16% | 24 36% | 25.8 31% |
* ... smaller is better
Stress Test
The stress test (with Prime95 and Furmark running constantly) represents an extreme scenario that we use to evaluate the system stability under full load. Already in the beginning of the test, the CPU (P: 2 GHz; E: 1.5 to 1.6 GHz) and GPU (850 MHz) run at low clock speeds, and the values drop further during the continuation of the test.
Speakers
The stereo speakers produce a sound that is acceptable overall. Areas that deserve some critique are the bass that is hardly present and significantly overemphasized highs. For a better sound experience, we recommend using headphones or external speakers.
LG Gram SuperSlim (2023) audio analysis
(+) | speakers can play relatively loud (86.1 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 23.1% lower than median
(±) | linearity of bass is average (11.9% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 1.3% away from median
(+) | mids are linear (4.8% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.9% higher than median
(+) | highs are linear (5.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (16.9% difference to median)
Compared to same class
» 18% of all tested devices in this class were better, 6% similar, 75% worse
» The best had a delta of 7%, average was 22%, worst was 53%
Compared to all devices tested
» 25% of all tested devices were better, 7% similar, 68% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Acer Swift Edge SFE16-42-R1GM audio analysis
(+) | speakers can play relatively loud (83.7 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 30% lower than median
(±) | linearity of bass is average (12.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.7% away from median
(±) | linearity of mids is average (8% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 7.4% higher than median
(±) | linearity of highs is average (8% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (23.3% difference to median)
Compared to same class
» 62% of all tested devices in this class were better, 8% similar, 30% worse
» The best had a delta of 7%, average was 22%, worst was 53%
Compared to all devices tested
» 65% of all tested devices were better, 6% similar, 29% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Power Management - The Gram laptop offers an excellent battery life
Power Consumption
The laptop does not show any conspicuous behavior in terms of the power consumption. It runs through the stress test and The Witcher 3 test with a decreasing and varying power consumption. The included 65-Watt charger offers a sufficient amount of power.
| Off / Standby | 0.26 / 0.76 Watt |
| Idle | 4.2 / 8.9 / 10.3 Watt |
| Load |
47 / 49 Watt |
   
| |
| LG Gram SuperSlim (2023) i7-1360P, Iris Xe G7 96EUs, SK hynix PC801 HFS001TEJ9X101N, OLED, 1920x1080, 15.60 | Samsung Galaxy Book3 Pro 14 i7-1360P, Iris Xe G7 96EUs, WD PC SN740 512GB SDDPMQD-512G-1101, AMOLED, 2880x1800, 14.00 | Lenovo ThinkPad X1 Carbon G11-21HNS00000 i7-1365U, Iris Xe G7 96EUs, WDC PC SN810 1TB, IPS, 1920x1200, 14.00 | Acer Swift Edge SFE16-42-R1GM R7 7735U, Radeon 680M, Micron 3400 1TB MTFDKBA1T0TFH, OLED, 3840x2400, 16.00 | LG Gram 15Z90Q i5-1240P, Iris Xe G7 80EUs, Samsung PM9A1 MZVL21T0HCLR, IPS, 1920x1080, 15.60 | Apple MacBook Air 15 2023 M2 16 GB M2, M2 10-Core GPU, Apple SSD AP1024Z, IPS, 2880x1864, 15.30 | Average Intel Iris Xe Graphics G7 96EUs | Average of class Office | |
|---|---|---|---|---|---|---|---|---|
| Power Consumption | -9% | 13% | -17% | -2% | 21% | -11% | 4% | |
| Idle Minimum * | 4.2 | 4.2 -0% | 3.9 7% | 8.6 -105% | 4 5% | 2.2 48% | 5.26 ? -25% | 4.3 ? -2% |
| Idle Average * | 8.9 | 4.7 47% | 6.3 29% | 7.7 13% | 7 21% | 10 -12% | 8.46 ? 5% | 7.35 ? 17% |
| Idle Maximum * | 10.3 | 11.4 -11% | 6.9 33% | 9.3 10% | 13 -26% | 10.1 2% | 10.7 ? -4% | 9.15 ? 11% |
| Load Average * | 47 | 61.5 -31% | 41.8 11% | 47.9 -2% | 45 4% | 33.6 29% | 44.8 ? 5% | 41.1 ? 13% |
| Witcher 3 ultra * | 43.8 | 55.1 -26% | 33.2 24% | 46.3 -6% | 35.2 20% | 27.8 37% | ||
| Load Maximum * | 49 | 64 -31% | 63.4 -29% | 56 -14% | 66 -35% | 37.2 24% | 66.8 ? -36% | 58.1 ? -19% |
* ... smaller is better
Power Consumption The Witcher 3 / Stress Test
Power Consumption With External Monitor
Battery Life
In the WLAN test (loading websites via a script) and video test playing the short film Big Buck Bunny (H.264 coding, FHD) in a constant loop, the 15.6-inch laptop reaches a battery life of 12:29 and 14:40 hours respectively. During both tests, the power saving functions of the laptop are deactivated, and the display brightness is reduced to about 150 cd/m². While running the video test, the communication modules are also turned off.
| LG Gram SuperSlim (2023) i7-1360P, Iris Xe G7 96EUs, 60 Wh | Samsung Galaxy Book3 Pro 14 i7-1360P, Iris Xe G7 96EUs, 63 Wh | Lenovo ThinkPad X1 Carbon G11-21HNS00000 i7-1365U, Iris Xe G7 96EUs, 57 Wh | Acer Swift Edge SFE16-42-R1GM R7 7735U, Radeon 680M, 54 Wh | LG Gram 15Z90Q i5-1240P, Iris Xe G7 80EUs, 80 Wh | Apple MacBook Air 15 2023 M2 16 GB M2, M2 10-Core GPU, 66.5 Wh | Average of class Office | |
|---|---|---|---|---|---|---|---|
| Battery Runtime | -29% | -16% | -49% | -10% | 17% | -23% | |
| Reader / Idle | 1651 | 1257 -24% | 653 -60% | 1384 -16% | 1436 ? -13% | ||
| H.264 | 880 | 712 -19% | 848 -4% | 518 -41% | 1005 14% | 705 ? -20% | |
| WiFi v1.3 | 749 | 528 -30% | 839 12% | 437 -42% | 716 -4% | 993 33% | 594 ? -21% |
| Load | 190 | 109 -43% | 84 -56% | 89 -53% | 173 -9% | 197 4% | 117.7 ? -38% |
Pros
Cons
Verdict - An ultralight and extremely mobile office laptop with a great display
With the Gram SuperSlim, LG introduces a very light (990 g, ~2.18 lb) and slim (≤ 12.55 mm, 0.49 in) laptop. In combination with an excellent realistic battery life of 12 to 15 hours, this results in an extremely mobile laptop.
With the Gram SuperSlim, LG delivers a light and mobile work device but is also asking for a hefty price: for less than a kilogram of laptop, you have to pay 1,600 Euros (~$1,763).
The slim build also results in some compromises, and in addition to the 3.5-mm audio port, the laptop solely offers USB-C ports (2x Thunderbolt 4, 1x USB 3.2 Gen 2). This means that without a docking solution or corresponding adapter, you cannot use many external devices such as a monitor, for example.
The combination of Core i7-1360P and 16 GB of RAM (LPDDR5, onboard) is able to handle office and Internet applications without any trouble. While it can counter short load peaks with a lot of performance, it isn't designed for a constant high performance. The emissions are okay to a large extent, but the laptop could have been a bit quieter under full load.
The OLED display (1,920 x 1,080 pixels, 15.6 in) scores with a high brightness, excellent contrast, short response times, and a very good color space coverage. For example, the DCI-P3 color space is covered completely.
An alternative might be the Acer Swift Edge SFE16-42, which offers a significantly higher computing performance than the Gram but remains clearly behind in terms of the battery life. In addition, the Swift also weighs about 200 grams (~0.44 lb) more.
Price and Availability
The LG Gram SuperSlim in our tested configuration is available for about $1700 from the LG online store. Amazon also offers other configurations for $1,797 or $1,899.
LG Gram SuperSlim (2023)
-
07/26/2023 v7
Sascha Mölck
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Transparency
The present review sample was made available to the author as a loan by the manufacturer or a shop for the purposes of review. The lender had no influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review.
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