IntelBX80662I36100
IntelBX80662I56600K

2 Cores, 4 Threads @3.7GHz, Skylake.
Release date: Q4 2015.

4 Cores, 4 Threads @3.5GHz, Skylake.
Release date: Q3 2015.

Real World Speed
Performance profile from 195,913 user samples
46,904 User Benchmarks
Best Bench: 66% Base clock 3.7 GHz
Worst Bench: 44% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 44% Great: 66%
SPEED RANK: 249th / 1144
Gaming
Gaming 59%
Gunboat
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 35%
Jet ski
149,009 User Benchmarks
Best Bench: 103% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 63% Base clock 3.5 GHz, turbo 0.75 GHz (avg)
Poor: 63% Great: 103%
SPEED RANK: 57th / 1144
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 51%
Yacht
Effective Speed
Effective CPU Speed
59.3 % 84.5 % Much faster effective speed.
+43%
SC Mixed
Avg. Single Core Mixed Speed
101 Pts 118 Pts Faster single-core speed.
+17%
QC Mixed
Avg. Quad Core Mixed Speed
276 Pts 435 Pts Much faster quad-core speed.
+58%
MC Mixed
Avg. Multi Core Mixed Speed
283 Pts 447 Pts Much faster multi-core speed.
+58%
SC Mixed
OC Single Core Mixed Speed
114 Pts 140 Pts Faster OC single-core speed.
+23%
QC Mixed
OC Quad Core Mixed Speed
309 Pts 538 Pts Much faster OC quad-core speed.
+74%
MC Mixed
OC Multi Core Mixed Speed
312 Pts 543 Pts Much faster OC multi-core speed.
+74%
Market Share
Based on 13,862,054 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.43 % 1.08 % Hugely higher market share.
+151%
Value
Value For Money
82.4 % 91.1 % Slightly better value.
+11%
User Rating
UBM User Rating
66 % 80 % More popular.
+21%
Price
Price (score)
$121 Much cheaper.
+49%
$238
Age
Newest
39 Months +5% 41 Months
TDP
Thermal Design Power (TDP)
47 Watts Much more energy efficient.
+48%
91 Watts
Cores
CPU Processing Cores
2 cores 4 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
4 threads 4 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.7 GHz Slightly faster base frequency.
+6%
3.5 GHz
Turbo Clock
Turbo Clock Speed
3.7 GHz 3.9 GHz Slightly faster turbo frequency.
+5%
SC Int
Single Core Integer Speed
111 Pts 135 Pts Faster single-core int speed.
+22%
SC Float
Single Core Floating Point Speed
118 Pts 146 Pts Faster single-core fp speed.
+24%
QC Int
Quad Core Integer Speed
286 Pts 511 Pts Much faster quad-core int speed.
+79%
QC Float
Quad Core Floating Point Speed
328 Pts 577 Pts Much faster quad-core fp speed.
+76%
MC Int
Multi Core Integer Speed
287 Pts 514 Pts Much faster multi-core int speed.
+79%
MC Float
Multi Core Floating Point Speed
329 Pts 579 Pts Much faster multi-core fp speed.
+76%
Series
CPU Architecture
Skylake Skylake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 530 HD 530
Cache
Cache
3 MB SmartCache 6 MB SmartCache
Embedded Options Available
Embedded Options Available
Yes No
Recommended Price
Recommended Customer Price
$117.00 $242.00 - $243.00
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2015D (130W)
ECC Memory Supported
ECC Memory Supported ‡
Yes No
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.15 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
No 2.0
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
No Yes

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]

MORE DETAILS

Processor Rankings (Price vs Performance) January 2019 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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  • - CPU tests include: integer, floating and string.
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  • - 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.
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CPUGPUSSD
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Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
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