Intel Core i7-8665U
The Intel Core i7-8665U is a power efficient quad-core SoC for notebooks and Ultrabooks based on the Whiskey Lake generation that was announced in April 2019 as part of two vPro enabled WHL-U processors. Compared to the similar named Kaby Lake-R processors (e.g. Core i7-8550U), the Whiskey Lake CPUs are now produced in a further improved 14nm process (14nm++) and offer higher clock speeds. The architecture and features are the same. The i7-8665U offers e.g. high Turbo clock speeds of 4,8 GHz (versus 4 GHz of the i7-8550U) for a single core. The integrated GPU is still named Intel UHD Graphics 620 and the dual-channel memory controller still supports the same RAM speeds as Kaby-Lake-R (DDR4-2400 / LPDDR3-2133). Compared to the slower Core i5-8265U and i3-8145U, the i7 should support Thermal Velocity Boost (like the Core i7-8565U, the predecessor).
The Whiskey Lake SoCs are used with a new PCH produced in 14nm that supports USB 3.1 Gen 2 (10 Gbps) and CNVi WiFi/BT parts.
Architecture
Intel basically uses the same micro architecture compared to Skylake and Kaby Lake, so the per-MHz performance does not differ. That means Whiskey Lake is a Kaby Lake chip manufactured in the improved 14nm++ process.
Performance
The performance of the i7-8665U depends on the cooling solution of the laptop and the defined TDP limits for short and long term performance. We already saw big differences for Kaby Lake-R (e.g., i7-8550U benchmarks), especially for long term (sustained) performance. Therefore, it will be interesting to see how the additionalTurbo clock speed can be made use of. Due to the 200 MHz higher Turbo Boost, the 8665U should outperform the i7-8565U (see for benchmarks).
Graphics
The integrated Intel UHD Graphics 620 (Intel Gen 9.5) is untouched from the 8th Gen Kaby Lake chips. With fast dual-channel memory it can reach the performance of a dedicated GeForce 920M.
Contrary to Skylake, Kaby Lake and Whiskey Lake now also supports H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The dual-core Kaby Lake processors announced in January should also support HDCP 2.2.
Power Consumption
The chip is manufactured in a further improved 14nm process with FinFET transistors (14nm++), the same as the 8th Gen Coffee Lake processors. Intel still specifies the TDP with 15 Watts, which is typical for ULV chips. Depending on the usage scenario, the TDP can vary between 7.5 (cTDP Down) and 25 Watts.
| Series | Intel Core i7 |
| Codename | Whiskey Lake-U |
| Series: Core i7 Whiskey Lake-U | |
| Clock Rate | 1900 - 4800 MHz |
| Level 1 Cache | 256 KB |
| Level 2 Cache | 1 MB |
| Level 3 Cache | 8 MB |
| Number of Cores / Threads | 4 / 8 |
| Max. Power Consumption (TDP = Thermal Design Power) | 15 Watt |
| Manufacturing Technology | 14 nm |
| Max. Temperature | 100 °C |
| Socket | BGA1528 |
| Features | Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI |
| GPU | Intel UHD Graphics 620 (300 - 1150 MHz) |
| 64 Bit | 64 Bit support |
| Announcement Date | 04/16/2019 |
|
| Product Link (external) | Intel Core i7 8665U |
Benchmarks
Cinebench R15 - CPU Multi 64Bit
min: 524 avg: 603.2 median: 572 (13%) max: 701 Points
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Cinebench R15 - CPU Single 64Bit
min: 176 avg: 184 median: 180 (83%) max: 199 Points
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Ryzen 9 3900X 14%
Cinebench R11.5 - CPU Multi 64Bit
4.9 Points (15%)
...
Intel Core i7-940 1%
Intel Core i5-2400 4%
Intel Core i5-2500K 10%
...
Ryzen 9 3900X 585%
Cinebench R11.5 - CPU Single 64Bit
1.7 Points (84%)
...
Intel Xeon E3-1230 v3 -1%
Intel Xeon E3-1231 v3 2%
...
Cinebench R10 - Rendering Single 32Bit
6716 Points (73%)
| Dell Latitude 7400 2-in-1 | UHD Graphics 620 | 16384 MB | 300 - 1150 / MHz | 25.20.100.6577 | 6716 |
Dell Latitude 7400-8N6DH  | UHD Graphics 620 | 16384 MB | 300-1150 / 1200 MHz | Single-Channel 26.20.6860 | 7028 |
AMD Geode LX 800 -98%
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Intel Core i7-8665U
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Cinebench R10 - Rendering Multiple CPUs 32Bit
16602 Points (33%)
| Dell Latitude 7400 2-in-1 | UHD Graphics 620 | 16384 MB | 300 - 1150 / MHz | 25.20.100.6577 | 16602 |
| Dell Latitude 7400-8N6DH | UHD Graphics 620 | 16384 MB | 300-1150 / 1200 MHz | Single-Channel 26.20.6860 | 20251 |
...
Intel Core i5-2500K -4%
Intel Core i7-8665U
...
429.3 seconds (5%)
...
Intel Core i7-960 -8%
Intel Core i7-940 -5%
Intel Core 2 Extreme (Desktop) QX6850 0%
Intel Core i7-8665U
Intel Core 2 Quad (Desktop) Q9550 1%
...
VIA C3-M C3-M-1200 1871%
10 seconds (2%)
Ryzen 9 3900X -74%
...
Intel Xeon E3-1226 v3 -2%
Intel Core i7-8665U
Intel Core i5-6400 5%
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WinRAR - Result
3418 KB/s (40%)
...
...
min: 17731 avg: 19016.8 median: 19156 (23%) max: 20023 MIPS
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...
Ryzen 9 3900X 332%
7-Zip 18.03 - 7z b 4 -mmt1
min: 4685 avg: 4799.7 median: 4726 (68%) max: 4988 MIPS
...
...
X264 HD Benchmark 4.0 - Pass 2
32 fps (1%)
Intel Pentium 4 2.4 GHz -94%
...
Intel Core i5-2400 -17%
Intel Core i7-8665U
...
X264 HD Benchmark 4.0 - Pass 1
139 fps (51%)
Intel Pentium 4 2.4 GHz -93%
...
Intel Core i5-2400 -1%
...
HWBOT x265 Benchmark v2.2 - 4k Preset
min: 4 avg: 4.7 median: 4 (20%) max: 5 fps
...
...
Ryzen 9 3900X 344%
TrueCrypt - Serpent Mean 100MB
0.3 GB/s (27%)
...
Intel Core i7-8665U
Intel Core i5-6400 0%
...
TrueCrypt - Twofish Mean 100MB
0.5 GB/s (15%)
...
Intel Core i5-6400 0%
Intel Core i7-8665U
Intel Xeon E3-1226 v3 4%
...
TrueCrypt - AES Mean 100MB
2.6 GB/s (14%)
...
Intel Core i5-2400 -8%
Intel Core i5-6400 4%
...
min: 716 avg: 741.7 median: 740 (8%) max: 769 Seconds
...
...
3DMark 06 - CPU
6202 Points (41%)
| Dell Latitude 7400 2-in-1 | UHD Graphics 620 | 16384 MB | 300 - 1150 / MHz | 25.20.100.6577 | 6202 |
| Dell Latitude 7400-8N6DH | UHD Graphics 620 | 16384 MB | 300-1150 / 1200 MHz | Single-Channel 26.20.6860 | 6528 |
...
...
Ryzen 9 3900X 141%
Super Pi mod 1.5 XS 1M *
8 Seconds (2%)
...
...
VIA C3-M C3-M-1200 5688%
19 Seconds (1%)
...
Intel Core i7-8665U
Ryzen 9 3900X 4%
...
Super Pi Mod 1.5 XS 32M *
521 Seconds (2%)
...
Ryzen 9 3900X -2%
Intel Core i7-8665U
...
VIA C3-M C3-M-1200 4221%
3DMark 11 - Performance Physics 1280x720
min: 6585 avg: 7517.3 median: 7404 (39%) max: 8676 points
...
...
Ryzen 9 3900X 145%
3DMark - Ice Storm Standard Physics 1280x720
0 Points (0%)
| Dell Latitude 7400-8N6DH | UHD Graphics 620 | 16384 MB | 300-1150 / 1200 MHz | Single-Channel 26.20.6860 | 56356 |
...
3DMark - Ice Storm Extreme Physics 1920x1080
0 Points (0%)
| Dell Latitude 7400-8N6DH | UHD Graphics 620 | 16384 MB | 300-1150 / 1200 MHz | Single-Channel 26.20.6860 | 56510 |
...
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
58960 Points (68%)
...
...
3DMark - Cloud Gate Standard Physics 1280x720
min: 5761 avg: 6369 median: 5948 (15%) max: 7398 Points
...
...
Ryzen 9 3900X 186%
3DMark - Fire Strike Physics 1920x1080
min: 8163 avg: 9064.3 median: 8456 (29%) max: 10574 Points
...
...
Ryzen 9 3900X 213%
Geekbench 3 - 32 Bit Multi-Core Score
0 Points (0%)
| Dell Latitude 7400-8N6DH | UHD Graphics 620 | 16384 MB | 300-1150 / 1200 MHz | Single-Channel 26.20.6860 | 14277 |
Qualcomm Snapdragon S4 Plus MSM8230
...
Geekbench 3 - 32 Bit Single-Core Score
0 Points (0%)
| Dell Latitude 7400-8N6DH | UHD Graphics 620 | 16384 MB | 300-1150 / 1200 MHz | Single-Channel 26.20.6860 | 3887 |
HiSilicon k3v2 Hi3620
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Geekbench 4.4 - 64 Bit Single-Core Score
min: 4686 avg: 5236.3 median: 5342 (84%) max: 5574 Points
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Geekbench 4.4 - 64 Bit Multi-Core Score
min: 11206 avg: 15543.8 median: 16347 (37%) max: 18275 Points
...
...
Ryzen 9 3900X 183%
Mozilla Kraken 1.1 - Total Score *
min: 1015 avg: 1084.2 median: 1101 (2%) max: 1135 ms
...
...
min: 30142 avg: 33079.3 median: 33577 (64%) max: 35519 Points
...
Power Consumption - Cinebench R15 Multi Power Consumption (external Monitor) ultra *
27.4 Watt (7%)
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- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
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