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MagyarDell Latitude 3520 in review: Core i5 office laptop delivers good runtimes
Dell has a series of office notebooks in its lineup with the Latitude-3520 series, which is aimed at private and professional users. The prices start at around 500 Euros (~$530) and are around 800 Euros ($845) for this model. You get a package consisting of a Core i5-1135G7 CPU, 8 GB RAM and 256 GB SSD. The competition includes devices like the Lenovo ThinkBook 15 G4, the Asus ExpertBook B1 B1500CEAE and the HP ProBook 450 G9, the Acer Extensa 15 EX215-54.
Possible competitors in comparison
Rating | Date | Model | Weight | Height | Size | Resolution | Best Price |
|---|---|---|---|---|---|---|---|
| 84.6 % | 02/2023 | Dell Latitude 3520 i5-1135G7, Iris Xe G7 80EUs | 1.8 kg | 18.06 mm | 15.60" | 1920x1080 | |
| 84.9 % | 09/2022 | Lenovo ThinkBook 15 G4 21DL0009GE R5 5625U, Vega 7 | 1.8 kg | 23 mm | 15.60" | 1920x1080 | |
| 84.8 % | 11/2021 | Asus ExpertBook B1 B1500CEAE, i5-1135G7 i5-1135G7, Iris Xe G7 80EUs | 1.7 kg | 19.4 mm | 15.60" | 1920x1080 | |
| 85 % | 08/2022 | HP ProBook 450 G9 6A180EA i7-1255U, Iris Xe G7 96EUs | 1.7 kg | 19.9 mm | 15.60" | 1920x1080 | |
| 78 % | 02/2022 | Acer Extensa 15 EX215-54-5103 i5-1135G7, Iris Xe G7 80EUs | 1.9 kg | 19.9 mm | 15.60" | 1920x1080 |
Case & features - Latitude with USB 3.2 Gen 2
The inconspicuous, black plastic casing has predominantly matte, rough surfaces that are resistant to fingerprints. The narrow sides of the case provide some variety: They have smooth, glossy surfaces. The chassis does not show any workmanship flaws. The base unit can be twisted a bit too much - it lacks stiffness. The battery (screwed, not glued) and the other innards are accessible after removing the base unit.
The 3520 has three USB-A ports (2x USB 3.2 Gen 1, 1x USB 2.0) and one USB-C port (USB 3.2 Gen 2) on board. The latter supports Power Delivery and Displayport via USB-C. Together with the HDMI port, the notebook has two video outputs. The SD memory card reader (reference card: AV Pro SD microSD 128 GB V60) is one of the slower ones. Positive: The webcam (0.9 MP) offers a mechanical cover.
The WLAN transfer rates determined under optimal conditions (no other WLAN devices in the near vicinity, small distance between notebook and server PC) turn out excellent and correspond to the capabilities of the WiFi chip (Intel AX201; 802.11 ax). Dell has Latitude variants with an integrated LTE modem available - the present test device is not one of them. Retrofitting would not be possible since the slot, antennas and SIM card holder are missing.
| SD Card Reader | |
| average JPG Copy Test (av. of 3 runs) | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (8 - 82.7, n=49, last 2 years) | |
| Dell Latitude 3520 (AV Pro SD microSD 128 GB V60) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 (AV Pro V60) | |
| maximum AS SSD Seq Read Test (1GB) | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (25 - 90.5, n=43, last 2 years) | |
| Dell Latitude 3520 (AV Pro SD microSD 128 GB V60) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 (AV Pro V60) | |
Input devices - The 3520 comes with a backlit keyboard
The smooth keys of the chiclet keyboard offer a short stroke and a clear pressure point. The key resistance is okay. The keyboard's slight bobbing did not prove to be annoying. The two-stage key illumination is regulated via a function key. Overall, Dell supplies a keyboard suitable for everyday use here.
A multi-touch capable clickpad (approx. 11.5 x 8 cm/~4.5 x 3.2 in) serves as a mouse replacement. Its smooth surface makes it easy for the fingers to glide. The pad responds to inputs in the corners, has a short stroke and offers a clear pressure point.
Display - FHD panel with low color space coverage
The matte 15.6-inch screen (1,920 x 1,080 pixels) does not reveal PWM flickering in any brightness setting. Brightness and contrast fall short of the respective target (> 300 cd/m² and 1,000:1, respectively) - although sometimes just barely. The screens of some rivals sometimes offer a significantly better contrast.
| |||||||||||||||||||||||||
Brightness Distribution: 87 %
Center on Battery: 271 cd/m²
Contrast: 724:1 (Black: 0.445 cd/m²)
ΔE Color 4.54 | 0.5-29.43 Ø5, calibrated: 4.43
ΔE Greyscale 1.25 | 0.57-98 Ø5.3
41.4% AdobeRGB 1998 (Argyll 2.2.0 3D)
60.2% sRGB (Argyll 2.2.0 3D)
40% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.46
| Dell Latitude 3520 BOE NE156FH, IPS, 1920x1080, 15.60 | Lenovo ThinkBook 15 G4 21DL0009GE LENOVO LEN156FHD , IPS, 1920x1080, 15.60 | Asus ExpertBook B1 B1500CEAE, i5-1135G7 CEC Panda LM156LF-5L06, IPS, 1920x1080, 15.60 | HP ProBook 450 G9 6A180EA Chi Mei CMN1512, , 1920x1080, 15.60 | Acer Extensa 15 EX215-54-5103 AU Optronics B156HTN06.1, TN LED, 1920x1080, 15.60 | |
|---|---|---|---|---|---|
| Display | 12% | 4% | 7% | -7% | |
| Display P3 Coverage | 40 | 44.8 12% | 41.6 4% | 42.76 7% | 37 -7% |
| sRGB Coverage | 60.2 | 66.8 11% | 62.3 3% | 63.9 6% | 55.7 -7% |
| AdobeRGB 1998 Coverage | 41.4 | 46.3 12% | 43 4% | 44.2 7% | 38.2 -8% |
| Response Times | -32% | -117% | -36% | -60% | |
| Response Time Grey 50% / Grey 80% * | 24 ? | 29 ? -21% | 44.8 ? -87% | 28 ? -17% | 38 ? -58% |
| Response Time Black / White * | 13 ? | 18.5 ? -42% | 32 ? -146% | 20 ? -54% | 21 ? -62% |
| PWM Frequency | 37037 ? | 52 ? | |||
| Screen | -12% | 2% | -18% | -135% | |
| Brightness middle | 322 | 313 -3% | 304 -6% | 234 -27% | 220 -32% |
| Brightness | 294 | 301 2% | 285 -3% | 218 -26% | 203 -31% |
| Brightness Distribution | 87 | 90 3% | 89 2% | 85 -2% | 82 -6% |
| Black Level * | 0.445 | 0.21 53% | 0.19 57% | 0.17 62% | 0.43 3% |
| Contrast | 724 | 1490 106% | 1600 121% | 1376 90% | 512 -29% |
| Colorchecker dE 2000 * | 4.54 | 5.3 -17% | 5.2 -15% | 5.04 -11% | 10.74 -137% |
| Colorchecker dE 2000 max. * | 17.27 | 18.7 -8% | 18.5 -7% | 18.04 -4% | 20.92 -21% |
| Colorchecker dE 2000 calibrated * | 4.43 | 4 10% | 4.5 -2% | 4.13 7% | 4.44 -0% |
| Greyscale dE 2000 * | 1.25 | 4.4 -252% | 2.9 -132% | 4.43 -254% | 13.29 -963% |
| Gamma | 2.46 89% | 2.08 106% | 2.14 103% | 2.41 91% | 2.63 84% |
| CCT | 6677 97% | 6479 100% | 6639 98% | 6350 102% | 14880 44% |
| Total Average (Program / Settings) | -11% /
-10% | -37% /
-15% | -16% /
-15% | -67% /
-97% |
* ... smaller is better
The screen displays the colors quite well in the state of delivery: However, the target (DeltaE < 3) is missed with a deviation of about 4.5. A calibration only provides minor improvements.
The display cannot reproduce the AdobeRGB (41%), sRGB (60%) and DCI-P3 (40%) color spaces. Thus, the panel is not made for application scenarios that rely on color fidelity. The competitors do not look any better in this respect.
Display Response Times
| ↔ Response Time Black to White | ||
|---|---|---|
| 13 ms ... rise ↗ and fall ↘ combined | ↗ 3 ms rise |  |
| ↘ 10 ms fall | ||
| The screen shows good response rates in our tests, but may be too slow for competitive gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 28 % 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 | ||
| 24 ms ... rise ↗ and fall ↘ combined | ↗ 4 ms rise |  |
| ↘ 20 ms fall | ||
| The screen shows good response rates in our tests, but may be too slow for competitive gamers. In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 29 % 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 17900 (minimum: 5 - maximum: 3846000) Hz was measured. | |||
The viewing-angle stable IPS panel can be read from any position. Reading the screen outdoors is quite possible if the sun does not shine too brightly.
Performance - Dell relies on Tiger Lake
Dell's Inspiron 15 3520 is a 15.6-inch office notebook that is aimed at business and private users. Tiger Lake processors (Celeron to Core i7) are used within the range - Intel's penultimate CPU generation. The prices range between 500 and 900 Euros (~$529 and $953) - depending on the configuration.
Test conditions
Dell Power Manager provides profiles (see table) to influence the temperature and power development of the notebook. These affect the CPU performance, the GPU performance remains unaffected. The profiles "Ultra Performance" (benchmarks) and "Optimized" (battery test) were used.
| Ultra Power | Optimized | Cooling | Quiet | |
|---|---|---|---|---|
| Power Limit 1 | 30 watts | 25 watts | 14.75 watts | 14.75 watts |
| Power Limit 2 | 51 watts | 51 watts | 51 watts | 51 watts |
Processor
The Core i5-1135G7 Quad-core processor (Tiger Lake) works with a base clock of 2.4 GHz. An increase to 3.8 GHz (all cores) up to 4.2 GHz (one core) is possible via Turbo. Hyperthreading is supported. The benchmark results are often below the average of all 1135G7 laptops tested so far.
The multi-thread test of the Cinebench R15 benchmark is initially processed with 3.3 to 3.5 GHz, then the clock drops to 3.1 to 3.2 GHz. The single-thread test is run with 1.5 to 4.2 GHz. The clock rates are lower in battery mode. The CB15 loop test confirms a permanent use of the CPU Turbo on a medium level.
Cinebench R15 Multi Loop
* ... 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 | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office | |
| Acer Extensa 15 EX215-54-5103 | |
| Average Intel Core i5-1135G7 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| HP ProBook 450 G9 6A180EA | |
| AIDA64 / FP32 Ray-Trace | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (763 - 24250, n=120, last 2 years) | |
| Acer Extensa 15 EX215-54-5103 | |
| Average Intel Core i5-1135G7 (4313 - 7952, n=45) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| HP ProBook 450 G9 6A180EA | |
| AIDA64 / FPU Julia | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (4027 - 102228, n=120, last 2 years) | |
| Acer Extensa 15 EX215-54-5103 | |
| Average Intel Core i5-1135G7 (19402 - 32283, n=45) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| HP ProBook 450 G9 6A180EA | |
| Dell Latitude 3520 | |
| AIDA64 / CPU SHA3 | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Acer Extensa 15 EX215-54-5103 | |
| Average of class Office (279 - 4442, n=119, last 2 years) | |
| Average Intel Core i5-1135G7 (1316 - 2172, n=45) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| HP ProBook 450 G9 6A180EA | |
| AIDA64 / CPU Queen | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (8031 - 113016, n=120, last 2 years) | |
| HP ProBook 450 G9 6A180EA | |
| Acer Extensa 15 EX215-54-5103 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| Average Intel Core i5-1135G7 (39000 - 46951, n=45) | |
| AIDA64 / FPU SinJulia | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (404 - 14288, n=120, last 2 years) | |
| Acer Extensa 15 EX215-54-5103 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| Average Intel Core i5-1135G7 (3497 - 4445, n=45) | |
| HP ProBook 450 G9 6A180EA | |
| AIDA64 / FPU Mandel | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (2054 - 54365, n=120, last 2 years) | |
| Acer Extensa 15 EX215-54-5103 | |
| Average Intel Core i5-1135G7 (12569 - 19635, n=45) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| HP ProBook 450 G9 6A180EA | |
| AIDA64 / CPU AES | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Acer Extensa 15 EX215-54-5103 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| Average Intel Core i5-1135G7 (28988 - 67977, n=45) | |
| Average of class Office (5226 - 147611, n=120, last 2 years) | |
| HP ProBook 450 G9 6A180EA | |
| AIDA64 / CPU ZLib | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (67.6 - 1018, n=120, last 2 years) | |
| HP ProBook 450 G9 6A180EA | |
| Acer Extensa 15 EX215-54-5103 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| Average Intel Core i5-1135G7 (265 - 373, n=51) | |
| AIDA64 / FP64 Ray-Trace | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (432 - 12755, n=120, last 2 years) | |
| Acer Extensa 15 EX215-54-5103 | |
| Average Intel Core i5-1135G7 (2226 - 4291, n=45) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| HP ProBook 450 G9 6A180EA | |
| AIDA64 / CPU PhotoWorxx | |
| Average of class Office (4814 - 48177, n=120, last 2 years) | |
| Average Intel Core i5-1135G7 (9004 - 45366, n=45) | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| HP ProBook 450 G9 6A180EA | |
| Dell Latitude 3520 | |
| Acer Extensa 15 EX215-54-5103 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
System performance
The smoothly running system can handle office and Internet applications as well as modest games. The working memory (8 GB) running in single-channel mode prevents the maximum possible computing power from being unleashed. Installing a second memory module (= dual-channel mode active) would remedy this and have a positive effect on the graphics performance in particular. The memory's transfer rates are on a normal level for DDR4-3200 memory.
The combination of single-channel mode and (below)average CPU performance gives the 3520 positions at the rear of the PCMark 10 and Crossmark benchmarks within the comparison field.
CrossMark: Overall | Productivity | Creativity | Responsiveness
| PCMark 10 / Score | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (2325 - 7157, n=105, last 2 years) | |
| Acer Extensa 15 EX215-54-5103 | |
| HP ProBook 450 G9 6A180EA | |
| Average Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs (4026 - 4952, n=53) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| PCMark 10 / Essentials | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (5095 - 20841, n=105, last 2 years) | |
| HP ProBook 450 G9 6A180EA | |
| Average Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs (8149 - 9917, n=53) | |
| Acer Extensa 15 EX215-54-5103 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| PCMark 10 / Productivity | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (3041 - 10198, n=105, last 2 years) | |
| HP ProBook 450 G9 6A180EA | |
| Acer Extensa 15 EX215-54-5103 | |
| Average Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs (5040 - 6619, n=53) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
| PCMark 10 / Digital Content Creation | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (1912 - 9056, n=105, last 2 years) | |
| Acer Extensa 15 EX215-54-5103 | |
| Dell Latitude 3520 | |
| Average Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs (3548 - 5255, n=53) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| HP ProBook 450 G9 6A180EA | |
| CrossMark / Overall | |
| HP ProBook 450 G9 6A180EA | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (348 - 1891, n=106, last 2 years) | |
| Average Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs (1058 - 1293, n=11) | |
| Dell Latitude 3520 | |
| Acer Extensa 15 EX215-54-5103 | |
| CrossMark / Productivity | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| HP ProBook 450 G9 6A180EA | |
| Average of class Office (393 - 1870, n=106, last 2 years) | |
| Dell Latitude 3520 | |
| Average Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs (1148 - 1332, n=11) | |
| Acer Extensa 15 EX215-54-5103 | |
| CrossMark / Creativity | |
| HP ProBook 450 G9 6A180EA | |
| Average of class Office (340 - 1982, n=106, last 2 years) | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs (895 - 1263, n=11) | |
| Dell Latitude 3520 | |
| Acer Extensa 15 EX215-54-5103 | |
| CrossMark / Responsiveness | |
| Acer Extensa 15 EX215-54-5103 | |
| Average of class Office (258 - 2017, n=106, last 2 years) | |
| Dell Latitude 3520 | |
| Average Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs (923 - 1320, n=11) | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| HP ProBook 450 G9 6A180EA | |
| PCMark 10 Score | 4410 points | |
Help | ||
| AIDA64 / Memory Copy | |
| Average of class Office (7158 - 88119, n=121, last 2 years) | |
| Average Intel Core i5-1135G7 (17443 - 63889, n=45) | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| HP ProBook 450 G9 6A180EA | |
| Dell Latitude 3520 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Acer Extensa 15 EX215-54-5103 | |
| AIDA64 / Memory Read | |
| Average of class Office (7325 - 87297, n=121, last 2 years) | |
| Average Intel Core i5-1135G7 (19716 - 63705, n=45) | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| HP ProBook 450 G9 6A180EA | |
| Dell Latitude 3520 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Acer Extensa 15 EX215-54-5103 | |
| AIDA64 / Memory Write | |
| Average of class Office (7579 - 94965, n=121, last 2 years) | |
| Average Intel Core i5-1135G7 (18722 - 66778, n=45) | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| HP ProBook 450 G9 6A180EA | |
| Dell Latitude 3520 | |
| Acer Extensa 15 EX215-54-5103 | |
| AIDA64 / Memory Latency | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| Average of class Office (44.3 - 188.3, n=122, last 2 years) | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| HP ProBook 450 G9 6A180EA | |
| Dell Latitude 3520 | |
| Average Intel Core i5-1135G7 (68.3 - 107, n=51) | |
| Acer Extensa 15 EX215-54-5103 | |
* ... smaller is better
DPC latencies
The standardized latency monitor test (web surfing, 4k video playback, Prime95 high-load) revealed abnormalities that are probably related to the network adapter. The system does not seem to be suitable for real-time video and audio editing. Future software updates could lead to improvements or even degradations.
| DPC Latencies / LatencyMon - interrupt to process latency (max), Web, Youtube, Prime95 | |
| Lenovo ThinkBook 15 G4 21DL0009GE | |
| HP ProBook 450 G9 6A180EA | |
| Acer Extensa 15 EX215-54-5103 | |
| Asus ExpertBook B1 B1500CEAE, i5-1135G7 | |
| Dell Latitude 3520 | |
* ... smaller is better
Mass storage
Dell equips the Latitude with a PCIe-4-SSD (M.2-2230; M.2-2280 models also fit) from Kioxia, which offers a storage capacity of 256 GB. The transfer rates are good, but it is not one of the top SSDs. The notebook does not have room for additional storage media.
* ... smaller is better
Continuous Read: DiskSpd Read Loop, Queue Depth 8
Graphics card
Intel's iGPU can work permanently at full power (1300 MHz) - the Witcher 3 test reveals that. The 3520 is not a gaming notebook. Nevertheless, it can run modest games smoothly at low settings. The below-average benchmark results are due to the working memory running in single-channel mode. An increase in graphics performance could be achieved by installing a second memory module (= dual-channel mode active).
| 3DMark 11 Performance | 3870 points | |
| 3DMark Cloud Gate Standard Score | 11875 points | |
| 3DMark Fire Strike Score | 1856 points | |
| 3DMark Time Spy Score | 903 points | |
Help | ||
| low | med. | high | ultra | |
| GTA V (2015) | 41.2 | 32.1 | 8.49 | 3.35 |
| The Witcher 3 (2015) | 34.3 | 22.8 | 11 | 6.8 |
| Dota 2 Reborn (2015) | 78.7 | 52.3 | 27.2 | 25.1 |
| Final Fantasy XV Benchmark (2018) | 17.9 | 8.8 | 6.59 | |
| X-Plane 11.11 (2018) | 33.4 | 27.1 | 25.1 | |
| Strange Brigade (2018) | 37.7 | 13.5 | 11.4 |
Emissions & energy - The Latitude laptop delivers good runtimes
Noise emissions
In everyday use (office, Internet) and when idling, the fan often stands still - silence reigns. It can rev up under high load: Sound pressure levels of up to almost 41.5 dB(A) are possible. The temperature profile "Quiet" generally reduces the noise development - at the expense of the computing performance.
Noise Level
| Idle |
| 26 / 26 / 26 dB(A) |
| Load |
| 31.1 / 41.5 dB(A) |
 | ||
30 dB silent 40 dB(A) audible 50 dB(A) loud |
||
min:  , med:  , max:  Earthworks M23R, Arta (15 cm distance) environment noise: 26 dB(A) | ||
| Dell Latitude 3520 Iris Xe G7 80EUs, i5-1135G7, Kioxia BG5 KBG50ZNS256G | Lenovo ThinkBook 15 G4 21DL0009GE Vega 7, R5 5625U, Samsung PM991a MZALQ512HBLU | Asus ExpertBook B1 B1500CEAE, i5-1135G7 Iris Xe G7 80EUs, i5-1135G7, WDC PC SN530 SDBPNPZ-512G | HP ProBook 450 G9 6A180EA Iris Xe G7 96EUs, i7-1255U, SK Hynix HFM512GD3JX013N | Acer Extensa 15 EX215-54-5103 Iris Xe G7 80EUs, i5-1135G7, WDC PC SN530 SDBPNPZ-265G | |
|---|---|---|---|---|---|
| Noise | 6% | 8% | 9% | -3% | |
| off / environment * | 26 | 23.21 11% | 23.8 8% | 25.5 2% | 25 4% |
| Idle Minimum * | 26 | 23.21 11% | 23.8 8% | 25.5 2% | 25 4% |
| Idle Average * | 26 | 23.21 11% | 23.8 8% | 25.5 2% | 25 4% |
| Idle Maximum * | 26 | 23.21 11% | 25 4% | 25.5 2% | 27 -4% |
| Load Average * | 31.1 | 33 -6% | 32.2 -4% | 28 10% | 32.3 -4% |
| Load Maximum * | 41.5 | 43.34 -4% | 32.2 22% | 27.7 33% | 50 -20% |
| Witcher 3 ultra * | 32.2 |
* ... smaller is better
Temperature
The case temperatures remain within a green zone in everyday use (office, Internet). Under load (stress test, Witcher 3 test), the notebook heats up only slightly on average, but clearly at certain points: A temperature of almost 50 degrees Celsius (~122 degrees Fahrenheit) is reached at one measuring point. The CPU temperatures (about 77 degrees Celsius/~171 degrees Fahrenheit) do not give cause for concern.
The stress test (Prime95 and FurMark in continuous operation) is an extreme scenario for testing the system stability under full load. The CPU (3.5 GHz) and GPU (1,200 to 1,300 MHz) start the test with high clock rates. While the GPU clock remains largely constant over the entire duration, the CPU clock drops after a few seconds.
(+) The maximum temperature on the upper side is 37.5 °C / 100 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 49.7 °C / 121 F, compared to the average of 36.7 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 25 °C / 77 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 24.8 °C / 76.6 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 (+2.9 °C / 5.3 F).
| Dell Latitude 3520 Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs | Lenovo ThinkBook 15 G4 21DL0009GE AMD Ryzen 5 5625U, AMD Radeon RX Vega 7 | Asus ExpertBook B1 B1500CEAE, i5-1135G7 Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs | HP ProBook 450 G9 6A180EA Intel Core i7-1255U, Intel Iris Xe Graphics G7 96EUs | Acer Extensa 15 EX215-54-5103 Intel Core i5-1135G7, Intel Iris Xe Graphics G7 80EUs | |
|---|---|---|---|---|---|
| Heat | -8% | 4% | -8% | 1% | |
| Maximum Upper Side * | 37.5 | 41.1 -10% | 41.9 -12% | 40.5 -8% | 42 -12% |
| Maximum Bottom * | 49.7 | 45.6 8% | 48.6 2% | 47.6 4% | 43.3 13% |
| Idle Upper Side * | 29 | 31.6 -9% | 25.1 13% | 32.6 -12% | 27.9 4% |
| Idle Bottom * | 30.1 | 36.5 -21% | 26.4 12% | 34.2 -14% | 30.4 -1% |
* ... smaller is better
Speaker
The stereo speakers produce a decent sound, but there is hardly any bass.
Dell Latitude 3520 audio analysis
(+) | speakers can play relatively loud (87.9 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 24.8% lower than median
(±) | linearity of bass is average (11.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.6% away from median
(±) | linearity of mids is average (8.5% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5% higher than median
(+) | highs are linear (5.9% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (17.2% difference to median)
Compared to same class
» 20% of all tested devices in this class were better, 7% similar, 73% worse
» The best had a delta of 7%, average was 22%, worst was 53%
Compared to all devices tested
» 26% of all tested devices were better, 8% similar, 66% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Lenovo ThinkBook 15 G4 21DL0009GE audio analysis
(-) | not very loud speakers (64.28 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 13.6% lower than median
(-) | bass is not linear (15.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4.9% away from median
(±) | linearity of mids is average (8.1% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.2% away from median
(±) | linearity of highs is average (9.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (21.2% difference to median)
Compared to same class
» 46% of all tested devices in this class were better, 9% similar, 45% worse
» The best had a delta of 7%, average was 22%, worst was 53%
Compared to all devices tested
» 54% of all tested devices were better, 7% similar, 39% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Energy consumption
The power consumption is on a normal level for the hardware installed here. The power consumption decreases during the stress test because the CPU clock is reduced. The power supply (65 watts) is sufficiently sized.
| Off / Standby | 0.4 / 0.45 Watt |
| Idle | 3.2 / 7.2 / 7.8 Watt |
| Load |
34 / 65 Watt |
   
| |
Power consumption Witcher 3 / Stress test
Power consumption with external Monitor
Battery life
The Latitude achieves a runtime of 9:07 h in the practical WLAN test (mapping the load when calling websites via a script) - a good rate. It leaves most of the rivals behind, only the ProBook has a greater endurance.
Pros
Cons
Verdict - A solid, but (too) expensive office notebook
Dell's work notebook is a real winner thanks to Core i5-1135G7 CPU, 8 GB RAM (single-channel mode) and PCIe-4-SSD (256 GB). The Tiger-Lake processor, which is no longer brand-new, delivers performance rates just below the average of all 1135G7 notebooks tested so far.
One battery charge is sufficient for a WLAN runtime of about 9 hours - a good rate. Power is replenished via a USB-C power adapter. Alternatively, a proprietary Dell power adapter could be used; a suitable slot is available. The USB-C port (USB 3.2 Gen 2) would then be available for other tasks.
The screen turned out to be the biggest weakness of the Latitude 3520.
Brightness, contrast and color space coverage of the matte FHD screen (15.6 inch, IPS) turn out too low - a laptop of the present price level has to deliver more. This is also true in other areas: A one-year warranty and working memory running in single-channel mode are too little. At least the laptop has a backlit keyboard.
An alternative would be the Lenovo ThinkBook 15 G4. It offers slightly shorter battery runtimes, but a significant increase in computing power. The 1135G7-equipped Acer Extensa 15 EX215-54 would be a budget alternative that requires a willingness to compromise: A price of about 500 Euros (~$529) would be opposed by shorter battery runtimes and a TN screen with an unstable viewing angle. Furthermore, there would be no Windows operating system.
Price and availability
The Dell Latitude 15 3520 is available in the tested configuration for a price of 774 Euros (~$819) at Cyberport.de.
Dell Latitude 3520
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04/24/2023 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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