IntelBX80662I56600K
IntelBX80677I77700K

4 Cores, 8 Threads
@4.2GHz Kaby Lake (2017)

Real World Speed
Performance profile from 70,189 user samples
56,082 User Benchmarks
Best Bench: 109% Base clock 3.5 GHz, turbo 4.9 GHz (avg)
Worst Bench: 69% Base clock 3.5 GHz, turbo 0.75 GHz (avg)
Poor: 69% Great: 109%
SPEED RANK: 8th / 952
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 55%
Gunboat
14,107 User Benchmarks
Best Bench: 111% Base clock 4.2 GHz, turbo 5.15 GHz (avg)
Worst Bench: 89% Base clock 4.2 GHz
Poor: 89% Great: 111%
SPEED RANK: 2nd / 952
Gaming
Gaming 100%
UFO
Desktop
Desktop 100%
UFO
Workstation
Workstation 74%
Battleship
Effective Speed
Effective CPU Speed
90.8 % -10% 100 % Slightly faster effective speed.
+10%
SC Mixed
Avg. Single Core Mixed Speed
124 Pts -12% 139 Pts Slightly faster single-core speed.
+12%
QC Mixed
Avg. Quad Core Mixed Speed
472 Pts -4% 493 Pts +4%
MC Mixed
Avg. Multi Core Mixed Speed
485 Pts -55% 751 Pts Much faster multi-core speed.
+55%
SC Mixed
OC Single Core Mixed Speed
146 Pts -5% 154 Pts Slightly faster OC single-core speed.
+5%
QC Mixed
OC Quad Core Mixed Speed
573 Pts +2% 563 Pts -2%
MC Mixed
OC Multi Core Mixed Speed
577 Pts -44% 833 Pts Much faster OC multi-core speed.
+44%
Market Share
Based on 3,220,593 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.3 % -122% 5.1 % Hugely higher market share.
+122%
Value
Value For Money
101 % +3% 97.9 % -3%
User Rating
UBM User Rating
96 % -30% 125 % Much more popular.
+30%
Price
Price (score)
$220 Cheaper.
+29%
$310 -29%
Age
Newest
19 Months -89% 2 Months Hugely more recent.
+89%
TDP
Thermal Design Power (TDP)
91 Watts 0% 91 Watts 0%
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 0% 14 nm 0%
Base Clock
Base Clock Speed
3.5 GHz -20% 4.2 GHz Faster base frequency.
+20%
Turbo Clock
Turbo Clock Speed
3.9 GHz -15% 4.5 GHz Faster turbo frequency.
+15%
SC Int
Single Core Integer Speed
141 Pts -6% 150 Pts Slightly faster single-core int speed.
+6%
SC Float
Single Core Floating Point Speed
151 Pts -5% 158 Pts +5%
QC Int
Quad Core Integer Speed
555 Pts +2% 545 Pts -2%
QC Float
Quad Core Floating Point Speed
594 Pts +2% 581 Pts -2%
MC Int
Multi Core Integer Speed
556 Pts -38% 770 Pts Much faster multi-core int speed.
+38%
MC Float
Multi Core Floating Point Speed
596 Pts -46% 873 Pts Much faster multi-core fp speed.
+46%
Series
CPU Architecture
Skylake (2015) Kaby Lake (2017)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 530 HD 630
Launch Date
Launch Date
Q3'15 Q1'17
Cache
Cache
6 MB SmartCache 8 MB
Recommended Price
Recommended Customer Price
$242.00 - $243.00 $339.00 - $350.00
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350 MHz 350.00 MHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes

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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 Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '17 CPUPro]

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Processor Rankings (Price vs Performance) March 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.

UserBenchmark of the month

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 $310AMD RX 480 $190Samsung 850 Evo 250GB $94
AMD Ryzen 7 1700 $330Nvidia GTX 1070 $370Samsung 850 Pro 256GB $130
Intel Core i5-7600K $215Nvidia GTX 1060-6GB $219Samsung 850 Evo 500GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $110SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $430SanDisk Extreme 32GB $26
Seagate Barracuda 7200.14 1TB $50Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $9
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