IntelBX80662I56600K
IntelBX80646I74790K
Real World Speed
Performance profile from 275,413 user samples
127,537 User Benchmarks
Best Bench: 105% Base clock 3.5 GHz, turbo 4.9 GHz (avg)
Worst Bench: 63% Base clock 3.5 GHz, turbo 0.5 GHz (avg)
Poor: 63% Great: 105%
SPEED RANK: 44th / 1117
Gaming
Gaming 85%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 52%
Yacht
147,876 User Benchmarks
Best Bench: 97% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 71% Base clock 4 GHz, turbo 0.65 GHz (avg)
Poor: 71% Great: 97%
SPEED RANK: 43rd / 1117
Gaming
Gaming 85%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 63%
Destroyer
Effective Speed
Effective CPU Speed
84.9 % 84.9 % +0%
SC Mixed
Avg. Single Core Mixed Speed
117 Pts 121 Pts +3%
QC Mixed
Avg. Quad Core Mixed Speed
439 Pts Slightly faster quad-core speed.
+7%
412 Pts
MC Mixed
Avg. Multi Core Mixed Speed
450 Pts 635 Pts Much faster multi-core speed.
+41%
SC Mixed
OC Single Core Mixed Speed
141 Pts +4% 135 Pts
QC Mixed
OC Quad Core Mixed Speed
552 Pts Slightly faster OC quad-core speed.
+12%
494 Pts
MC Mixed
OC Multi Core Mixed Speed
553 Pts 715 Pts Faster OC multi-core speed.
+29%
Market Share
Based on 9,844,806 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.27 % 1.52 % Higher market share.
+20%
Value
Value For Money
95 % Better value.
+15%
82.4 %
User Rating
UBM User Rating
68 % 77 % Slightly more popular.
+13%
Price
Price (score)
$216 Much cheaper.
+32%
$316
Age
Newest
35 Months More recent.
+29%
49 Months
TDP
Thermal Design Power (TDP)
91 Watts 88 Watts +3%
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
4 threads 8 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
3.5 GHz 4 GHz Slightly faster base frequency.
+14%
Turbo Clock
Turbo Clock Speed
3.9 GHz 4.4 GHz Slightly faster turbo frequency.
+13%
SC Int
Single Core Integer Speed
136 Pts 136 Pts
SC Float
Single Core Floating Point Speed
148 Pts Slightly faster single-core fp speed.
+10%
134 Pts
QC Int
Quad Core Integer Speed
531 Pts Slightly faster quad-core int speed.
+7%
496 Pts
QC Float
Quad Core Floating Point Speed
573 Pts Faster quad-core fp speed.
+16%
496 Pts
MC Int
Multi Core Integer Speed
533 Pts 679 Pts Faster multi-core int speed.
+27%
MC Float
Multi Core Floating Point Speed
581 Pts 726 Pts Faster multi-core fp speed.
+25%
Series
CPU Architecture
Skylake (2015) Haswell (2013)
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 530 HD 4600
Launch Date
Launch Date
Q3'15 Q2'14
Cache
Cache
6 MB SmartCache 8 MB SmartCache
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$242.00 - $243.00 $339.00 - $350.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2013D
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Memory Bandwidth
Max Memory Bandwidth
34.1 GB/s 25.6 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® HD Graphics 4600
Graphics Output
Graphics Output
eDP/DP/HDMI/DVI eDP/DP/HDMI/DVI/VGA
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.25 GHz
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 2 GB
Graphics and IMC Lithography
Graphics and IMC Lithography
14 nm 22 nm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
TSX-NI
Intel® TSX-NI
Yes No

More specs » More specs »
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The Intel Core i5-6600K is based on the new "Skylake" 14nm manufacturing process. Sporting 4 physical cores with base/turbo clocks of 3.5/3.9 GHz the 6600K and its predecessor, the 4690K share the same basic configuration and disappointingly, offer similar performance. Comparing the 6600K and 6700K shows that the 6700K has faster multi and single core performance. The improved multi core performance is due to Hyperthreading which is the key differentiator for the i7-6700K. The gap in single core performance can largely be eliminated by overclocking the i5-6600K so although the stock effective speed is significantly higher on the 6700K, this gap diminishes significantly when both processors are overclocked. At a 30% discount, the 6600K is the better value gaming CPU. [Aug '15 CPUPro]

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The Intel Core i7-4790K, codenamed Devil's Canyon, is an upgraded 4770K, Intel's current flagship i7. The 4790K features an improved thermal interface which enables it to dissipate heat more efficiently than the 4770K. Comparing the 4770K and 4790K shows that stock performance has improved by 13% which is consistent with the base clock jump from 3.5 GHz to 4.0 GHz. OC performance remains unchanged. Comparing the 4790K and 4790 shows that at stock clocks the 4790K is around 16% faster which considering the small price difference makes the 4790K a far better choice. Previously Intel targeted the unlocked K versions at overclockers but with Devil's Canyon they have included VT-d on the K chip and this time it's squarely aimed at both power users and overclockers alike. Until the release of Broadwell in six months, the 4790K is the high end CPU of choice. [Jul '14 CPUPro]

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Processor Rankings (Price vs Performance) July 2018 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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CPUGPUSSD
Intel Core i7-8700K $317Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $120
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $945SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $58HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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