Intel Core i7-8565U vs Intel Core i7-8665U

Intel Core i7-8565U

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The Intel Core i7-8565U is a power efficient quad-core SoC for notebooks and Ultrabooks based on the Whiskey Lake generation that was announced in August 2018 (IFA). 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 i7-8565U offers e.g. high Turbo clock speeds of 4,6 GHz (versus 4 GHz of the i7-8550U) for a single core and 4.1 GHz (versus 3.7 GHz) of all cores (4.1 GHz for 2 cores). 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 supports Thermal Velocity Boost.

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 microarchitecture 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 i7-8565U 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 additional Turbo  clock speed can be made use of. It looks like Intel is promoting the i7 to be 3 - 11% faster than the previous i7-8550U, with Cinebench R15 Multi reaching 5% gains.

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.

Intel Core i7-8665U

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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.

Intel Core i7-8565UIntel Core i7-8665U
Intel Core i7Intel Core i7
Whiskey Lake-UWhiskey Lake-U
: Core i7 Whiskey Lake-U
Intel Core i7-8665U1900 - 4800 MHz4 / 88 MB
» Intel Core i7-8565U1800 - 4600 MHz4 / 88 MB
» Intel Core i7-8665U1900 - 4800 MHz4 / 88 MB
Intel Core i7-8565U1800 - 4600 MHz4 / 88 MB
1800 - 4600 MHz1900 - 4800 MHz
256 KB256 KB
1 MB1 MB
8 MB8 MB
4 / 84 / 8
15 15
14 14
BGA1528BGA1528
Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NIDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
iGPUIntel UHD Graphics 620 (300 - 1150 MHz)Intel UHD Graphics 620 (300 - 1150 MHz)
100 °C
Intel Core i7 i7-8665U

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU
44.9 pt (50%)
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 342     avg: 409     median: 411.5 (69%)     max: 472 Points
min: 412     avg: 439     median: 436 (74%)     max: 472 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 954     avg: 1257     median: 1181.4 (12%)     max: 1645 Points
min: 1267     avg: 1399     median: 1399.5 (14%)     max: 1530 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 452     avg: 612     median: 608.5 (14%)     max: 815 Points
min: 496     avg: 638     median: 672 (15%)     max: 701 Points
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 138.25     avg: 173     median: 173 (75%)     max: 193 Points
min: 143     avg: 177     median: 180.5 (78%)     max: 199 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 4.09     avg: 6.3     median: 6.8 (16%)     max: 7.4 Points
4.9 Points (11%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 0.65     avg: 1.8     median: 1.9 (75%)     max: 2.16 Points
1.7 Points (65%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 2682     avg: 6571     median: 6644 (68%)     max: 8906
min: 6716     avg: 6872     median: 6872 (71%)     max: 7028
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 13806     avg: 17608     median: 16760 (28%)     max: 23118
min: 16602     avg: 18427     median: 18426.5 (31%)     max: 20251
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 14542     avg: 21376     median: 21661 (25%)     max: 26851 Points
min: 14542     avg: 21375.7     median: 21661 (25%)     max: 26851 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 5474     avg: 8104     median: 8809.5 (77%)     max: 9435 Points
min: 5474     avg: 8104     median: 8809.5 (77%)     max: 9435 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 263.328     avg: 353     median: 360.2 (4%)     max: 420.024 s
429 s (5%)
wPrime 2.10 - wPrime 2.0 32m *
min: 6.812     avg: 9.5     median: 9.5 (2%)     max: 12.415 s
10 s (2%)
WinRAR - WinRAR 4.0
min: 3537     avg: 4129     median: 4291.5 (44%)     max: 4626
3418 (35%)
7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
min: 10531     avg: 17993     median: 18860 (19%)     max: 24847 MIPS
min: 17731     avg: 19017     median: 19156.5 (19%)     max: 20023 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 2029     avg: 4558     median: 4737 (31%)     max: 5923 MIPS
min: 4685     avg: 4800     median: 4726 (31%)     max: 4988 MIPS
X264 HD Benchmark 4.0 - x264 Pass 2
min: 29.35     avg: 33.8     median: 33.7 (20%)     max: 38.8 fps
32 fps (19%)
X264 HD Benchmark 4.0 - x264 Pass 1
min: 127.5     avg: 144     median: 140.9 (49%)     max: 160.2 fps
139 fps (48%)
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 3.24     avg: 4.7     median: 4.7 (17%)     max: 5.5 fps
min: 4.155     avg: 4.7     median: 4.8 (17%)     max: 5.2 fps
TrueCrypt - TrueCrypt Serpent
min: 0.347     avg: 0.4     median: 0.4 (0%)     max: 0.516 GB/s
0.3 GB/s (0%)
TrueCrypt - TrueCrypt Twofish
min: 0.567     avg: 0.7     median: 0.7 (1%)     max: 0.869 GB/s
0.5 GB/s (0%)
TrueCrypt - TrueCrypt AES
min: 3.2     avg: 4.2     median: 4 (0%)     max: 5.1 GB/s
2.6 GB/s (0%)
Blender 2.79 - Blender 2.79 BMW27 CPU *
min: 687     avg: 821     median: 806.5 (6%)     max: 1175.1 Seconds
min: 716     avg: 742     median: 740 (5%)     max: 769 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.682     avg: 0.8     median: 0.8 (17%)     max: 0.851 sec
min: 0.682     avg: 0.8     median: 0.8 (17%)     max: 0.851 sec
3DMark 06 - CPU - 3DMark 06 - CPU
min: 2813     avg: 5806     median: 6158 (41%)     max: 7928 Points
min: 6202     avg: 6365     median: 6365 (43%)     max: 6528 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 8.286     avg: 8.5     median: 8.4 (2%)     max: 8.889 s
8 s (2%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 18.9     avg: 19.3     median: 19 (1%)     max: 20.611 s
19 s (1%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 491.131     avg: 520     median: 507.7 (2%)     max: 582.988 s
521 s (2%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 16249     avg: 20521     median: 20544 (29%)     max: 25525 Points
min: 16249     avg: 20521.3     median: 20544 (29%)     max: 25525 Points
3DMark 11 - 3DM11 Performance Physics
min: 3083     avg: 6977     median: 6739 (30%)     max: 9422 Points
min: 6266     avg: 7281     median: 7055 (32%)     max: 8676 Points
3DMark - 3DMark Ice Storm Physics
min: 18314     avg: 43687     median: 46109 (30%)     max: 58024 Points
56356 Points (36%)
3DMark - 3DMark Ice Storm Extreme Physics
min: 19795     avg: 41691     median: 40823 (49%)     max: 57796 Points
56510 Points (67%)
3DMark - 3DMark Ice Storm Unlimited Physics
min: 22018     avg: 45134     median: 49602 (57%)     max: 60319 Points
min: 54189     avg: 59812     median: 60829 (70%)     max: 63399 Points
3DMark - 3DMark Cloud Gate Physics
min: 2413     avg: 5785     median: 5756 (15%)     max: 8032 Points
min: 5234     avg: 6325     median: 6228.5 (16%)     max: 7398 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 3409     avg: 8376     median: 8361 (26%)     max: 11865 Points
min: 7758     avg: 8605     median: 8322 (26%)     max: 10574 Points
3DMark - 3DMark Time Spy CPU
min: 1354     avg: 2953     median: 2841 (20%)     max: 3880 Points
min: 2669     avg: 2950     median: 2777 (19%)     max: 3405 Points
Geekbench 2 - 32 Bit - Geekbench Stream
min: 10320     avg: 10618     median: 10617.5 (86%)     max: 10915 Points
min: 10320     avg: 10617.5     median: 10617.5 (86%)     max: 10915 Points
Geekbench 2 - 32 Bit - Geekbench Memory
min: 7885     avg: 8316     median: 8315.5 (75%)     max: 8746 Points
min: 7885     avg: 8315.5     median: 8315.5 (75%)     max: 8746 Points
Geekbench 2 - 32 Bit - Geekbench Floating Point
min: 11135     avg: 11197     median: 11196.5 (22%)     max: 11258 Points
min: 11135     avg: 11196.5     median: 11196.5 (22%)     max: 11258 Points
Geekbench 2 - 32 Bit - Geekbench Integer
min: 10347     avg: 11305     median: 11305 (23%)     max: 12263 Points
min: 10347     avg: 11305     median: 11305 (23%)     max: 12263 Points
Geekbench 2 - 32 Bit - Geekbench Total Score
min: 10402     avg: 10600     median: 10600 (28%)     max: 10798 Points
min: 10402     avg: 10600     median: 10600 (28%)     max: 10798 Points
Geekbench 3 - Geekbench 3 32 Bit Multi-Core
min: 10521     avg: 12071     median: 12302.5 (22%)     max: 13703
14277 (25%)
Geekbench 3 - Geekbench 3 32 Bit Single-Core
min: 3340     avg: 3882     median: 3851 (79%)     max: 4820
3887 (80%)
Geekbench 3 - Geekbench 3 64 Bit Multi-Core
min: 11720     avg: 12845     median: 12844.5 (20%)     max: 13969
min: 11720     avg: 12844.5     median: 12844.5 (20%)     max: 13969
Geekbench 3 - Geekbench 3 64 Bit Single-Core
min: 4276     avg: 4294     median: 4294 (87%)     max: 4312
min: 4276     avg: 4294     median: 4294 (87%)     max: 4312
Geekbench 4.0 - Geekbench 4 64 Bit Single-Core
min: 4701     avg: 4750     median: 4759 (74%)     max: 4791
min: 4701     avg: 4750.3     median: 4759 (74%)     max: 4791
Geekbench 4.0 - Geekbench 4 64 Bit Multi-Core
min: 11576     avg: 13367     median: 13617.5 (33%)     max: 14655
min: 11576     avg: 13366.5     median: 13617.5 (33%)     max: 14655
Geekbench 4.4 - Geekbench 4.1+ 64 Bit Single-Core
min: 2357     avg: 5053     median: 5142.5 (77%)     max: 5547
min: 4686     avg: 5236     median: 5342.5 (80%)     max: 5574
Geekbench 4.4 - Geekbench 4.1+ 64 Bit Multi-Core
min: 8142     avg: 14179     median: 13888 (24%)     max: 16968
min: 11206     avg: 15544     median: 16347 (28%)     max: 18275
Geekbench 5 - Geekbench 5 64 Bit Single-Core
min: 1103     avg: 1186     median: 1197 (79%)     max: 1229
1196 (79%)
Geekbench 5 - Geekbench 5 64 Bit Multi-Core
min: 2643     avg: 3228     median: 3176 (19%)     max: 3803
3453 (21%)
Geekbench 5.1 / 5.2 - Geekbench 5.1 / 5.2 64 Bit Single-Core
min: 1108     avg: 1136     median: 1135.5 (70%)     max: 1163
min: 1108     avg: 1135.5     median: 1135.5 (70%)     max: 1163
Geekbench 5.1 / 5.2 - Geekbench 5.1 / 5.2 64 Bit Multi-Core
min: 2839     avg: 3074     median: 3073.5 (25%)     max: 3308
min: 2839     avg: 3073.5     median: 3073.5 (25%)     max: 3308
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 730.3     avg: 1096     median: 1066.2 (2%)     max: 2621.6 ms
min: 1015.7     avg: 1072     median: 1067.6 (2%)     max: 1135.6 ms
Sunspider - Sunspider 1.0 Total Score *
min: 80.7     avg: 154     median: 152.7 (2%)     max: 228.3 ms
235 ms (3%)
Octane V2 - Octane V2 Total Score
min: 13935     avg: 34603     median: 34884.5 (59%)     max: 49795 Points
min: 30142     avg: 33976     median: 34548 (58%)     max: 36667 Points

Average Benchmarks Intel Core i7-8565U → 100% n=55

Average Benchmarks Intel Core i7-8665U → 100% n=55

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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