IntelBX80662I56600K
IntelBX80646I74790K
Real World Speed
Performance profile from 179,674 user samples
83,849 User Benchmarks
Best Bench: 108% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 68% Base clock 3.5 GHz, turbo 0.2 GHz (avg)
Poor: 68% Great: 108%
SPEED RANK: 28th / 980
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 54%
Yacht
95,825 User Benchmarks
Best Bench: 100% Base clock 4 GHz, turbo 4.7 GHz (avg)
Worst Bench: 74% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 74% Great: 100%
SPEED RANK: 29th / 980
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 90%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed
89 % +0% 88.9 % -0%
SC Mixed
Avg. Single Core Mixed Speed
122 Pts -3% 126 Pts +3%
QC Mixed
Avg. Quad Core Mixed Speed
462 Pts Slightly faster quad-core speed.
+6%
435 Pts -6%
MC Mixed
Avg. Multi Core Mixed Speed
475 Pts -36% 646 Pts Much faster multi-core speed.
+36%
SC Mixed
OC Single Core Mixed Speed
144 Pts +4% 138 Pts -4%
QC Mixed
OC Quad Core Mixed Speed
567 Pts Slightly faster OC quad-core speed.
+12%
508 Pts -12%
MC Mixed
OC Multi Core Mixed Speed
570 Pts -27% 724 Pts Faster OC multi-core speed.
+27%
Market Share
Based on 5,505,973 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.76 % -8% 1.9 % Slightly higher market share.
+8%
Value
Value For Money
99.4 % Better value.
+18%
84 % -18%
User Rating
UBM User Rating
105 % Slightly more popular.
+8%
97 % -8%
Price
Price (score)
$217 Much cheaper.
+36%
$339 -36%
Age
Newest
26 Months Much more recent.
+35%
40 Months -35%
TDP
Thermal Design Power (TDP)
91 Watts -3% 88 Watts +3%
Cores
CPU Processing Cores
4 cores 0% 4 cores 0%
Threads
CPU Processing Threads
4 threads -100% 8 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm -36%
Base Clock
Base Clock Speed
3.5 GHz -14% 4 GHz Slightly faster base frequency.
+14%
Turbo Clock
Turbo Clock Speed
3.9 GHz -13% 4.4 GHz Slightly faster turbo frequency.
+13%
SC Int
Single Core Integer Speed
140 Pts +1% 138 Pts -1%
SC Float
Single Core Floating Point Speed
149 Pts Slightly faster single-core fp speed.
+8%
138 Pts -8%
QC Int
Quad Core Integer Speed
552 Pts Slightly faster quad-core int speed.
+8%
513 Pts -8%
QC Float
Quad Core Floating Point Speed
585 Pts Slightly faster quad-core fp speed.
+14%
512 Pts -14%
MC Int
Multi Core Integer Speed
553 Pts -24% 687 Pts Faster multi-core int speed.
+24%
MC Float
Multi Core Floating Point Speed
586 Pts -25% 734 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) October 2017 CPU Rankings.

Welcome to our desktop CPU comparison. We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by price to yield a value for money rating which is geared towards gamers. Calculated values don't always paint the whole picture so we check them against hundreds of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top CPUs. [CPUPro]

How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

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CPUGPUSSD
Intel Core i7-7700K $299Nvidia GTX 1070 $386Samsung 850 Evo 250GB $95
AMD Ryzen 7 1700 $280AMD RX 480 $508Samsung 850 Pro 256GB $126
Intel Core i5-7600K $230Nvidia GTX 1060-6GB $265Samsung 850 Evo 500GB $140
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $160SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $920SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $67Corsair Vengeance LPX DDR4 3200 C16 2x8GB $180SanDisk Ultra Fit 32GB $13
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