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Intel Core i7-7820HK

Intel 7820HK

The Intel Core i7-7820HK is a fast quad-core processor for notebooks based on the Kaby Lake architecture and was announced in January 2017. It is the second fastest model of the consumer series at the time of the announcement. Only the i7-7920HQ and Xeon E3-1535M v6 are faster. Besides four cores including Hyper-Threading support running at 2.9 - 3.9 GHz (4 cores up to 3.5 GHz, 2 cores up to 3.7 GHz), the processor is also equipped with the HD Graphics 630 GPU as well as a dual-channel memory controller (DDR3L-1600/DDR4-2400). It is manufactured in a 14nm process with FinFET transistors.

Compared to the Core i7-7820HQ, the 7820HK lacks business features like vPro or TXT support.

Architecture

Intel basically uses the same micro architecture compared to Skylake, so the per-MHz performance does not differ. The manufacturer only reworked the Speed Shift technology for faster dynamic adjustments of voltages and clocks, and the improved 14nm process allows much higher frequencies combined with better efficiency than before.

Performance

Due to the higher clock speeds, the performance of the i7-7820HK is slightly faster than the old Skylake top model Core i7-6920HQ (2.9 - 3.8 GHz). The performance is sufficient even for very demanding tasks and on par with powerful desktop quad-core processors.

Graphics

The integrated Intel HD Graphics 630 has 24 Execution Units (similar to previous HD Graphics 530) running at 350 - 1100 MHz. The performance depends a lot on the memory configuration; it should be comparable to a dedicated Nvidia GeForce 920M in combination with fast DDR4-2133 dual-channel memory.

Contrary to Skylake, Kaby Lake now supports hardware decoding for H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The dual-core Kaby Lake processors, which were announced in January, should also support HDCP 2.2.

Power Consumption

The chip is manufactured in an improved 14nm process with FinFET transistors, which improves the efficiency even further. Intel still specifies the TDP with 45 Watts, but it can also be reduced to 35 Watts by the notebook manufacturers (cTDP down). This will obviously affect the performance, because the Turbo Boost cannot be maintained for longer periods.

SeriesIntel Core i7
CodenameKaby Lake
Series: Core i7 Kaby Lake
Intel Core i7-7920HQ (compare)3100 - 4100 MHz4 / 88 MB
Intel Core i7-7820HQ (compare)2900 - 3900 MHz4 / 88 MB
» Intel Core i7-7820HK2900 - 3900 MHz4 / 88 MB
Intel Core i7-7700HQ (compare)2800 - 3800 MHz4 / 86 MB
Intel Core i7-7567U (compare)3500 - 4000 MHz2 / 44 MB
Intel Core i7-7600U (compare)2800 - 3900 MHz2 / 44 MB
Intel Core i7-7660U (compare)2500 - 4000 MHz2 / 44 MB
Intel Core i7-7560U (compare)2400 - 3800 MHz2 / 44 MB
Intel Core i7-7500U (compare)2700 - 3500 MHz2 / 44 MB
Intel Core i7-7Y75 (compare)1300 - 3600 MHz2 / 44 MB
Clock Rate2900 - 3900 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache8 MB
Number of Cores / Threads4 / 8
Max. Power Consumption (TDP = Thermal Design Power)45 Watt
Manufacturing Technology14 nm
Max. Temperature100 °C
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
GPUIntel HD Graphics 630 (300 - 1150 MHz)
64 Bit64 Bit support
Starting Price$378 U.S.
Announcement Date01/03/2017

Benchmarks

Cinebench R15 - CPU Multi 64Bit
min: 758     avg: 786     median: 772 (36%)     max: 867 Points
Cinebench R15 - CPU Single 64Bit
min: 156     avg: 163.2     median: 163 (84%)     max: 171 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 8.34     avg: 8.6     median: 8.4 (35%)     max: 9.53 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.69     avg: 1.8     median: 1.8 (83%)     max: 1.85 Points
Cinebench R10 - Rendering Single 32Bit
min: 6182     avg: 6333.3     median: 6252 (79%)     max: 6566 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 23003     avg: 23972     median: 23402 (47%)     max: 26081 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
0 Points (0%)
Cinebench R10 - Rendering Single CPUs 64Bit
0 Points (0%)
wPrime 2.0x - 1024m *
min: 179.449     avg: 241.2     median: 213.2 (3%)     max: 330.9 seconds
wPrime 2.0x - 32m *
min: 6.668     avg: 8     median: 6.7 (1%)     max: 10.6 seconds
WinRAR - Result
min: 5114     avg: 5134.5     median: 5134.5 (61%)     max: 5155 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 46     avg: 46.9     median: 46.9 (28%)     max: 47.8 fps
X264 HD Benchmark 4.0 - Pass 1
min: 177     avg: 178.8     median: 178.8 (77%)     max: 180.6 fps
TrueCrypt - Serpent Mean 100MB
min: 0.416     avg: 0.5     median: 0.5 (27%)     max: 0.609 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.71     avg: 0.8     median: 0.7 (35%)     max: 0.831 GB/s
TrueCrypt - AES Mean 100MB
min: 3.9     avg: 4.2     median: 4.3 (35%)     max: 4.3 GB/s
3DMark 06 - CPU
min: 8012     avg: 8186     median: 8186 (65%)     max: 8360 Points
Super Pi mod 1.5 XS 1M *
min: 9     avg: 9.6     median: 9.4 (2%)     max: 10.5 Seconds
Super Pi mod 1.5 XS 2M *
min: 20.665     avg: 21.7     median: 21.3 (1%)     max: 23.5 Seconds
Super Pi Mod 1.5 XS 32M *
min: 490.548     avg: 524.7     median: 529.1 (2%)     max: 550.2 Seconds
3DMark Vantage - P CPU no PhysX 1280x1024
0 Points (0%)
3DMark 11 - Performance Physics 1280x720
min: 9837     avg: 10134.6     median: 10110 (62%)     max: 10523 points
3DMark - Ice Storm Standard Physics 1280x720
min: 52263     avg: 54621.4     median: 53164 (34%)     max: 59600 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 51954     avg: 54703.8     median: 53689.5 (78%)     max: 59482 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 51327     avg: 54832.8     median: 53938.5 (78%)     max: 60127 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 7942     avg: 8256     median: 8021 (20%)     max: 9050 Points
3DMark - Fire Strike Physics 1920x1080
min: 11041     avg: 11518     median: 11201 (50%)     max: 12592 Points
Geekbench 3 - 32 Bit Multi-Core Score
min: 14323     avg: 15394     median: 15394 (49%)     max: 16465 Points
Geekbench 3 - 32 Bit Single-Core Score
min: 3718     avg: 4039.5     median: 4039.5 (87%)     max: 4361 Points
Geekbench 4.0 - Compute OpenCL Score
165768 Points (98%)
Geekbench 4.0 - 64 Bit Multi-Core Score
15575 Points (57%)
Geekbench 4.0 - 64 Bit Single-Core Score
4942 Points (88%)
Geekbench 4.1 - 64 Bit Single-Core Score
4841 Points (100%)
Geekbench 4.1 - 64 Bit Multi-Core Score
16165 Points (88%)
Mozilla Kraken 1.1 - Total Score *
min: 908.4     avg: 3145.8     median: 984 (2%)     max: 7545 ms
Sunspider - 1.0 Total Score *
min: 68.3     avg: 152.2     median: 69.8 (2%)     max: 400.9 ms
Octane V2 - Total Score
min: 38980     avg: 39544     median: 39000 (81%)     max: 40652 Points
- 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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