Intel Core i7-6820HK vs Intel Core i7-6600U

Intel Core i7-6820HK

► remove Intel 6820HK

The Intel Core i7-6820HK is a quad-core processor based on the Skylake architecture, that has been launched in September 2015. In addition to four CPU cores with Hyper-Threading clocked at 2.7 - 3.6 GHz (4 cores: max. 3.2 GHz, 2 cores: max. 3.4 GHz), the chip also integrates an HD Graphics 530 GPU and a dual-channel DDR4-2133/DDR3L-1600 memory controller. The CPU is manufactured using a 14 nm process with FinFET transistors.

Currently, the i7-6820HK is the only Skylake chip with an unlocked multiplier for easy overclocking (similar to previous Extreme Editions).

Architecture

Skylake replaces both Haswell and Broadwell and brings the same microarchitecture in every TDP class from 4.5 to 45 W. The extensive improvements of the Skylake design include increased out-of-order buffers, optimized prefetching and branch prediction as well as additional performance gains through Hyper-Threading. Overall, however, performance per clock has been increased by only 5 to 10 percent (compared to Haswell) respectively under 5 percent (compard to Broadwell), which is quite modest for a new architecture ("Tock").

Performance

Tanks to the improved architecture, the Core i7-6820HK performs roughly on par with the former Core i7-4900MQ (Haswell) or the Core i7-5700HQ (Broadwell). Under long-lasting full load, the Skylake chip will take the lead over most of its Haswell-based predecessors, as the advanced 14 nm process leads to a higher energy efficiency and reduces throttling. If the 6820HK is overclocked (we've tested up to 4.0 GHz on all 4 cores), the performance will be even better.

Even the most demanding applications and excessive multitasking are handled easily.

Graphics

The integrated graphics unit called HD Graphics 530 represents the "GT2" version of the Skylake GPU (Intel Gen. 9). The 24 Execution Units, also called EUs, are clocked at 350 - 1050 MHz and offer a performance about 20 percent above the old HD Graphics 4600. Games of 2015 can thus be played smoothly in low or medium settings. For more information about performance and features, check our page for the HD Graphics 530.

Power Consumption

Specified at a TDP of 45 W (including CPU, GPU and memory controller), the CPU is best suited for bigger notebooks 15-inches in size and above. Optionally, the TDP can be lowered to 35 watts (cTDP down), reducing both heat dissipation and performance.

Intel Core i7-6600U

► remove Intel 6600U

The Intel Core i7-6600U is an ULV (ultra low voltage) dual-core SoC based on the Skylake architecture. In September 2015, it's the fastest CPU of the 15 W series, which can be found in ultrabooks as well as normal notebooks. In addition to two CPU cores with Hyper-Threading clocked at 2.6 - 3.4 GHz (2 cores: max. 3.2 GHz), the chip also integrates an HD Graphics 520 GPU and a dual-channel DDR4-2133/DDR3L-1600 memory controller. The SoC is manufactured using a 14 nm process with FinFET transistors.

Architecture

Skylake replaces both Haswell and Broadwell and brings the same microarchitecture in every TDP class from 4.5 to 45 W. The extensive improvements of the Skylake design include increased out-of-order buffers, optimized prefetching and branch prediction as well as additional performance gains through Hyper-Threading. Overall, however, performance per clock has been increased by only 5 to 10 percent (compared to Haswell) respectively under 5 percent (compard to Broadwell), which is quite modest for a new architecture ("Tock").

Performance

According to the specified clock rates and the improved architecture, the Core i7-6600U should perform similar to a Core i5-4310M (Haswell, 37 W) and is one of the fastest ULV dual-cores as of late 2015. Thus, the CPU has sufficient power for office and multimedia purposes as well as more demanding applications and multitasking.

Graphics

The integrated graphics unit called HD Graphics 520 represents the "GT2" version of the Skylake GPU (Intel Gen. 9). The 24 Execution Units, also called EUs, are clocked at 300 - 1050 MHz and offer a performance somewhere in range of a dedicated GeForce 820M. Games of 2015 can thus be played smoothly in low settings. For more information about performance and features, check our page for the HD Graphics 520.

Power Consumption

Specified at a TDP of 15 W (including CPU, GPU and memory controller), the CPU is best suited for small notebooks and ultrabooks (11-inches and above). Optionally, the TDP can be lowered to 7.5 watts (cTDP down), reducing both heat dissipation and performance and allowing even more compact designs.

Intel Core i7-6820HKIntel Core i7-6600U
Intel Core i7Intel Core i7
SkylakeSkylake
: Core i7 Skylake
Intel Core i7-6920HQ (compare)2900 - 3800 MHz4 / 88 MB
Intel Core i7-6970HQ (compare)2800 - 3700 MHz4 / 88 MB
Intel Core i7-6870HQ (compare)2700 - 3600 MHz4 / 88 MB
» Intel Core i7-6820HK2700 - 3600 MHz4 / 88 MB
Intel Core i7-6820HQ (compare)2700 - 3600 MHz4 / 88 MB
Intel Core i7-6770HQ (compare)2600 - 3500 MHz4 / 86 MB
Intel Core i7-6700HQ (compare)2600 - 3500 MHz4 / 86 MB
Intel Core i7-6567U (compare)3300 - 3600 MHz2 / 44 MB
Intel Core i7-6600U2600 - 3400 MHz2 / 44 MB
Intel Core i7-6650U (compare)2200 - 3400 MHz2 / 44 MB
Intel Core i7-6560U (compare)2200 - 3200 MHz2 / 44 MB
Intel Core i7-6500U (compare)2500 - 3100 MHz2 / 44 MB
Intel Core i7-6920HQ (compare)2900 - 3800 MHz4 / 88 MB
Intel Core i7-6970HQ (compare)2800 - 3700 MHz4 / 88 MB
Intel Core i7-6870HQ (compare)2700 - 3600 MHz4 / 88 MB
Intel Core i7-6820HK2700 - 3600 MHz4 / 88 MB
Intel Core i7-6820HQ (compare)2700 - 3600 MHz4 / 88 MB
Intel Core i7-6770HQ (compare)2600 - 3500 MHz4 / 86 MB
Intel Core i7-6700HQ (compare)2600 - 3500 MHz4 / 86 MB
Intel Core i7-6567U (compare)3300 - 3600 MHz2 / 44 MB
» Intel Core i7-6600U2600 - 3400 MHz2 / 44 MB
Intel Core i7-6650U (compare)2200 - 3400 MHz2 / 44 MB
Intel Core i7-6560U (compare)2200 - 3200 MHz2 / 44 MB
Intel Core i7-6500U (compare)2500 - 3100 MHz2 / 44 MB
2700 - 3600 MHz2600 - 3400 MHz
256 KB128 KB
1 MB512 KB
8 MB4 MB
4 / 82 / 4
45 15
14 14
122 mm299 mm2
100 °C100 °C
BGABGA
Dual-Channel DDR3L-1600/DDR4-2133 Memory Controller, AVX, AVX2, Quick Sync, Virtualization, AES-NIDual-Channel DDR3L-1600/DDR4-2133 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, vPro, TXT
iGPUIntel HD Graphics 530 (350 - 1050 MHz)Intel HD Graphics 520 (300 - 1050 MHz)
$378 U.S.$393 U.S.
Intel Core i7 6820HKIntel Core i7 6600U

Cinebench R15 - CPU Multi 64Bit
min: 687     avg: 739.2     median: 709 (33%)     max: 836 Points
min: 306     avg: 324     median: 321 (15%)     max: 348 Points
Cinebench R15 - CPU Single 64Bit
min: 134     avg: 153.9     median: 152 (76%)     max: 172 Points
min: 118     avg: 136.7     median: 141 (71%)     max: 144 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 7.7     avg: 8.1     median: 7.8 (3%)     max: 9.24 Points
min: 3.25     avg: 3.6     median: 3.6 (1%)     max: 3.84 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.58     avg: 1.8     median: 1.7 (76%)     max: 1.94 Points
min: 1.19     avg: 1.6     median: 1.6 (71%)     max: 1.63 Points
Cinebench R10 - Rendering Single 32Bit
min: 5559     avg: 5775.6     median: 5653 (76%)     max: 6405 Points
min: 3260     avg: 5259.1     median: 5298 (71%)     max: 7045 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 20910     avg: 21773.6     median: 21165 (43%)     max: 24966 Points
min: 9140     avg: 11541.4     median: 11320 (23%)     max: 14948 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 27271     avg: 27498     median: 27479.5 (67%)     max: 27762 Points
min: 14391     avg: 14724     median: 14412 (35%)     max: 15369 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 7217     avg: 7316     median: 7313 (59%)     max: 7421 Points
min: 6863     avg: 7593.3     median: 6890 (56%)     max: 9027 Points
wPrime 2.0x - 1024m *
min: 210.349     avg: 229.7     median: 224.6 (3%)     max: 296.6 seconds
min: 447.319     avg: 503     median: 509.2 (6%)     max: 525.775 seconds
wPrime 2.0x - 32m *
min: 6.434     avg: 7.4     median: 7.3 (1%)     max: 9.5 seconds
min: 14.079     avg: 15.3     median: 14.7 (3%)     max: 19.264 seconds
WinRAR - Result
min: 5314     avg: 5369.3     median: 5314 (63%)     max: 5480 KB/s
min: 2264     avg: 2449.5     median: 2449.5 (29%)     max: 2635 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 43.9     avg: 45.1     median: 44.1 (26%)     max: 50 fps
min: 19.52     avg: 20.8     median: 20 (12%)     max: 22.62 fps
X264 HD Benchmark 4.0 - Pass 1
min: 160.9     avg: 171.5     median: 165.9 (71%)     max: 190 fps
min: 103.7     avg: 111     median: 109 (47%)     max: 120.37 fps
TrueCrypt - Serpent Mean 100MB
min: 0.311     avg: 0.4     median: 0.4 (24%)     max: 0.477 GB/s
min: 0.193     avg: 0.2     median: 0.2 (12%)     max: 0.201 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.503     avg: 0.7     median: 0.7 (32%)     max: 0.803 GB/s
min: 0.317     avg: 0.3     median: 0.3 (16%)     max: 0.343 GB/s
TrueCrypt - AES Mean 100MB
min: 2.1     avg: 3.9     median: 3.9 (32%)     max: 4.6 GB/s
min: 1.9     avg: 1.9     median: 1.9 (16%)     max: 2 GB/s
3DMark 06 - CPU
min: 7234     avg: 7601.2     median: 7410 (58%)     max: 8697 Points
min: 4107     avg: 4333.5     median: 4333.5 (34%)     max: 4560 Points
Super Pi mod 1.5 XS 1M *
min: 9     avg: 10     median: 10.3 (2%)     max: 10.627 Seconds
min: 10.905     avg: 11.1     median: 11.1 (2%)     max: 11.345 Seconds
Super Pi mod 1.5 XS 2M *
min: 20     avg: 22.3     median: 23 (1%)     max: 23.386 Seconds
min: 24.753     avg: 25.2     median: 25.1 (1%)     max: 26.034 Seconds
Super Pi Mod 1.5 XS 32M *
min: 486.718     avg: 532.4     median: 535.4 (2%)     max: 572.498 Seconds
min: 558.339     avg: 577.6     median: 572.4 (3%)     max: 609.647 Seconds
3DMark Vantage - P CPU no PhysX 1280x1024
min: 26017     avg: 26255.7     median: 26272 (48%)     max: 26478 Points
12712 Points (23%)
3DMark 11 - Performance Physics 1280x720
min: 8629     avg: 9698.8     median: 9521 (58%)     max: 10925 points
min: 4034     avg: 4479.1     median: 4606.5 (28%)     max: 4780 points
3DMark - Ice Storm Standard Physics 1280x720
min: 43579     avg: 49275.5     median: 47533.5 (31%)     max: 58061 Points
min: 31340     avg: 38138.2     median: 37127 (24%)     max: 42543 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 43592     avg: 49505.6     median: 47817 (70%)     max: 56227 Points
min: 26121     avg: 37420.4     median: 39364 (57%)     max: 42164 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 45688     avg: 49381.4     median: 47727 (68%)     max: 55770 Points
min: 42770     avg: 43159     median: 43159 (62%)     max: 43548 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 6663     avg: 7659.7     median: 7388 (19%)     max: 8824 Points
min: 3073     avg: 3542.6     median: 3569 (9%)     max: 3745 Points
3DMark - Fire Strike Physics 1920x1080
min: 9695     avg: 10671.8     median: 10219 (45%)     max: 12239 Points
min: 4279     avg: 5085.9     median: 5134.5 (23%)     max: 5344 Points
Geekbench 3 - 32 Bit Multi-Core Score
13486 Points (43%)
min: 6303     avg: 6692.5     median: 6692.5 (21%)     max: 7082 Points
Geekbench 3 - 32 Bit Single-Core Score
3819 Points (82%)
min: 3060     avg: 3222     median: 3222 (69%)     max: 3384 Points
Geekbench 3 - 64 Bit Multi-Core Score
14128 Points (38%)
min: 6618     avg: 7031.5     median: 7031.5 (19%)     max: 7445 Points
Geekbench 3 - 64 Bit Single-Core Score
3983 Points (81%)
min: 3191     avg: 3369     median: 3369 (69%)     max: 3547 Points
Mozilla Kraken 1.1 - Total Score *
min: 923.2     avg: 1121.9     median: 966.6 (2%)     max: 1631 ms
min: 1030.1     avg: 1600.5     median: 1047.6 (2%)     max: 3827 ms
Sunspider - 1.0 Total Score *
min: 65.7     avg: 78.8     median: 69.8 (2%)     max: 95.8 ms
min: 77.3     avg: 137.8     median: 134.4 (3%)     max: 205 ms
Octane V2 - Total Score
min: 16177     avg: 34770.5     median: 36903 (76%)     max: 44322 Points
min: 8244     avg: 28547.6     median: 32986 (68%)     max: 35045 Points
Power Consumption - Prime95 V28,10 Stress Power Consumption (external Monitor) ultra *
100%
1 6600U +
28.9 Watt (12%)
Power Consumption - Cinebench R15 Multi Power Consumption (external Monitor) ultra *
100%
1 6600U +
26.2 Watt (11%)

Average Benchmarks Intel Core i7-6820HK → 100%

Average Benchmarks Intel Core i7-6600U → 72%

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

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Redaktion, 2017-09- 8 (Update: 2017-09-11)