Intel Core i7-6700K vs Intel Core i7-6700

Intel Core i7-6700K

► remove Intel 6700K

The Intel Core i7-6700K is a high-end quad-core desktop processor based on the Skylake architecture, which was announced in August 2015. The CPU, which is manufactured in a 14 nm process, runs at 4.0 up to 4.2 GHz (2 cores: 4.0 GHz, 3 cores: 4.0 GHz, 4 cores: 4.0 GHz) and can execute up to 8 threads simultaneously thanks to Hyperthreading. Being a so called "K"-model, the Core i7-6700K has a free multiplier and can be easily overclocked. 

Performance

Even though the Core i7-6700K has a slightly lower clock than the old i7-4790K (4.0 GHz - 4.4 GHz), the performance is slightly better compared to the Haswell predecessor. Depending on the application, the per-MHz performance was increased by roughly 5-10 %. Even the most demanding applications and games are no problem for the high-end CPU.

Graphics

Graphics are handled by the integrated Intel HD Graphics 530 with 24 EUs (Execution Units), which is clocked at 350 - 1150 MHz. Compared to the HD Graphics 4600 (Haswell, 20 EUs), the performance is increased by around 25 percent. The overall GPU performance is still low-end, so modern games can, if at all, only be played smoothly with low settings. 

Power Consumption

The TDP was slightly raised from 88 to 91 Watts compared to the predecessor.

Intel Core i7-6700

► remove Intel 6700

The Intel Core i7-6700 is a high-end quad-core desktop processor based on the Skylake architecture, which was announced in August 2015. The CPU, which is manufactured in a 14 nm process, runs at 3.4 up to 4.0 GHz (2 cores: 3.9 GHz, 4 cores: 3.7 GHz) and can execute up to 8 threads simultaneously thanks to Hyperthreading. Contrary to the Core i7-6700K, the i7-6700 does not have a free multiplier and can hardly be overclocked. 

Architecture

Intel uses Skylake to replace both Broadwell and Haswell and therefore once again uses one core design for all TDP classes. Several improvements of the Skylake architecture include bigger Out-to-Order-Buffer, optimizations for pre-fetching as well as bigger gains by Hyperthreading. However, the changes are small for a "Tock" – a new micro architecture – in general, so the per-MHz performance is only between 5-10 % (compared to Haswell) or less than 5 % higher (compared to Broadwell), respectively.

Performance

Even though the Core i7-6700 has a slightly lower clock than the old i7-4790 (3.6 GHz - 4.0 GHz), the performance is slightly better compared to the Haswell predecessor. Another 7 % faster is the top model i7-6700K. Even the most demanding applications and games are no problem for the high-end CPU.

Graphics

Graphics are handled by the integrated Intel HD Graphics 530 with 24 EUs (Execution Units), which is clocked at 350 - 1150 MHz. Compared to the HD Graphics 4600 (Haswell, 20 EUs), the performance is increased by around 25 percent. The overall GPU performance is still low-end, so modern games can, if at all, only be played smoothly with low settings. 

Power Consumption

Intel specifies the TDP with 65 Watts.

Intel Core i7-6700KIntel Core i7-6700
Intel Core i7 (Desktop)Intel Core i7 (Desktop)
SkylakeSkylake
: Core i7 (Desktop) Skylake
» Intel Core i7-6700K4000 - 4200 MHz4 / 88 MB
Intel Core i7-67003400 - 4000 MHz4 / 88 MB
Intel Core i7-6700T compare2800 - 3600 MHz4 / 86 MB
Intel Core i7-6700K4000 - 4200 MHz4 / 88 MB
» Intel Core i7-67003400 - 4000 MHz4 / 88 MB
Intel Core i7-6700T compare2800 - 3600 MHz4 / 86 MB
4000 - 4200 MHz3400 - 4000 MHz
256 KB256 KB
1 MB1 MB
8 MB8 MB
4 / 84 / 8
91 65
14 14
FCLGA1151FCLGA1151
DDR3(L)-1600/DDR4-2133 Memory Controller, HyperThreading, AVX, AVX2, AES-NI, TSX-NI, Quick Sync, Virtualization, vProDDR3(L)-1600/DDR4-2133 Memory Controller, HyperThreading, AVX, AVX2, AES-NI, TSX-NI, Quick Sync, Virtualization, vPro
iGPUIntel HD Graphics 530 (350 - 1150 MHz)Intel HD Graphics 530 (350 - 1150 MHz)
$339 U.S.$303 U.S.
Intel Core i7 (Desktop) 6700KIntel Core i7 (Desktop) 6700

Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 865     avg: 881     median: 880 (20%)     max: 910 Points
min: 743     avg: 791     median: 802 (18%)     max: 817 Points
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 160     avg: 174     median: 177.5 (77%)     max: 182 Points
min: 117     avg: 156     median: 168.5 (73%)     max: 171 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 8.55     avg: 9.6     median: 9.7 (22%)     max: 10.2 Points
min: 8.69     avg: 8.8     median: 8.9 (20%)     max: 8.94 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.72     avg: 2     median: 2 (77%)     max: 2.16 Points
min: 1.89     avg: 1.9     median: 1.9 (75%)     max: 1.94 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 6434     avg: 6980     median: 6531 (67%)     max: 8845
min: 5634     avg: 6003     median: 6002.5 (62%)     max: 6371
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 19705     avg: 24305     median: 25817 (43%)     max: 26150
min: 24237     avg: 24305     median: 24304.5 (41%)     max: 24372
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 33740     avg: 34944     median: 34593 (40%)     max: 36500 Points
31339 Points (36%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 8600     avg: 8758     median: 8624 (76%)     max: 9050 Points
8213 Points (72%)
wPrime 2.10 - wPrime 2.0 1024m *
min: 178.009     avg: 225     median: 205.9 (2%)     max: 275.013 s
100%
6700 +
209 s (2%)
wPrime 2.10 - wPrime 2.0 32m *
min: 5.726     avg: 7.2     median: 6.7 (1%)     max: 8.94 s
100%
6700 +
6.8 s (1%)
WinRAR - WinRAR 4.0
5877 (60%)
min: 5323     avg: 5413     median: 5412.5 (56%)     max: 5502
X264 HD Benchmark 4.0 - x264 Pass 2
min: 52.48     avg: 54.3     median: 54.6 (32%)     max: 55.25 fps
50.8 fps (30%)
X264 HD Benchmark 4.0 - x264 Pass 1
min: 194.2     avg: 205     median: 204.8 (71%)     max: 210.2 fps
187 fps (65%)
TrueCrypt - TrueCrypt Serpent
min: 0.203     avg: 0.4     median: 0.5 (0%)     max: 0.507 GB/s
102%
6700 +
min: 0.46     avg: 0.5     median: 0.5 (0%)     max: 0.465 GB/s
TrueCrypt - TrueCrypt Twofish
min: 0.324     avg: 0.7     median: 0.7 (1%)     max: 0.848 GB/s
106%
6700 +
min: 0.77     avg: 0.8     median: 0.8 (1%)     max: 0.781 GB/s
TrueCrypt - TrueCrypt AES
min: 1.7     avg: 3.8     median: 4.4 (0%)     max: 4.9 GB/s
102%
6700 +
min: 4.4     avg: 4.5     median: 4.5 (0%)     max: 4.5 GB/s
3DMark 06 - CPU - 3DMark 06 - CPU
min: 8973     avg: 9037     median: 9037 (60%)     max: 9101 Points
min: 8199     avg: 8403     median: 8478 (57%)     max: 8532 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 8.787     avg: 9     median: 9 (2%)     max: 9.392 s
100%
6700 +
min: 9.3     avg: 9.7     median: 9.7 (2%)     max: 10 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 19.705     avg: 20.3     median: 20.3 (1%)     max: 20.83 s
100%
6700 +
min: 20.8     avg: 22.4     median: 22.4 (1%)     max: 24 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 463.766     avg: 479     median: 479.7 (2%)     max: 498.33 s
100%
6700 +
min: 490.8     avg: 537     median: 536.9 (2%)     max: 583 s
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 31997     avg: 32843     median: 32153 (45%)     max: 34379 Points
min: 28021     avg: 28924     median: 28924 (40%)     max: 29827 Points
3DMark 11 - 3DM11 Performance Physics
min: 10341     avg: 11161     median: 11228 (51%)     max: 11761 Points
min: 8405     avg: 9780     median: 9832 (44%)     max: 10416 Points
3DMark - 3DMark Ice Storm Physics
min: 59904     avg: 61163     median: 61287.5 (39%)     max: 62149 Points
min: 52447     avg: 54281     median: 54997 (35%)     max: 55398 Points
3DMark - 3DMark Ice Storm Extreme Physics
min: 59247     avg: 60685     median: 61091 (73%)     max: 62096 Points
100%
6700 +
min: 59247     avg: 60684.6     median: 61091 (73%)     max: 62096 Points
3DMark - 3DMark Ice Storm Unlimited Physics
min: 60945     avg: 61859     median: 62114 (72%)     max: 62262 Points
100%
6700 +
min: 60945     avg: 61858.8     median: 62114 (72%)     max: 62262 Points
3DMark - 3DMark Cloud Gate Physics
min: 8328     avg: 9165     median: 9272 (23%)     max: 9702 Points
min: 7879     avg: 8131     median: 7952 (20%)     max: 8561 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 12430     avg: 12822     median: 12870.5 (40%)     max: 13182 Points
min: 10918     avg: 11399     median: 11385 (36%)     max: 11819 Points
Geekbench 3 - Geekbench 3 32 Bit Multi-Core
16365 (29%)
min: 15038     avg: 15053     median: 15053 (27%)     max: 15068
Geekbench 3 - Geekbench 3 32 Bit Single-Core
4225 (87%)
min: 4022     avg: 4031     median: 4030.5 (83%)     max: 4039
Geekbench 3 - Geekbench 3 64 Bit Multi-Core
min: 17030     avg: 17122     median: 17122 (27%)     max: 17214
15812 (25%)
Geekbench 3 - Geekbench 3 64 Bit Single-Core
min: 4436     avg: 4598     median: 4598 (94%)     max: 4760
4233 (86%)
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 795.2     avg: 800     median: 800 (1%)     max: 804.8 ms
100%
6700 +
812 ms (1%)
Sunspider - Sunspider 1.0 Total Score *
min: 76.8     avg: 119     median: 119.5 (1%)     max: 162.1 ms
101%
6700 +
67.9 ms (1%)
Octane V2 - Octane V2 Total Score
min: 37135     avg: 40412     median: 40411.5 (68%)     max: 43688 Points
110%
6700 +
44474 Points (75%)

Average Benchmarks Intel Core i7-6700K → 100% n=34

Average Benchmarks Intel Core i7-6700 → 96% n=34

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

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)