IntelBX80623I72600K
IntelBX80662I56600K
Real World Speed
Performance profile from 90,680 user samples
25,452 User Benchmarks
Best Bench: 88% Base clock 3.4 GHz, turbo 5.05 GHz (avg)
Worst Bench: 55% Base clock 3.8 GHz, turbo 0.4 GHz (avg)
Poor: 55% Great: 88%
SPEED RANK: 88th / 961
Gaming
Gaming 71%
Battleship
Desktop
Desktop 72%
Battleship
Workstation
Workstation 51%
Yacht
65,228 User Benchmarks
Best Bench: 107% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 66% Base clock 3.5 GHz, turbo 0.8 GHz (avg)
Poor: 66% Great: 107%
SPEED RANK: 15th / 961
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 53%
Yacht
Effective Speed
Effective CPU Speed
70.5 % -25% 88 % Faster effective speed.
+25%
SC Mixed
Avg. Single Core Mixed Speed
101 Pts -19% 120 Pts Faster single-core speed.
+19%
QC Mixed
Avg. Quad Core Mixed Speed
345 Pts -33% 458 Pts Much faster quad-core speed.
+33%
MC Mixed
Avg. Multi Core Mixed Speed
499 Pts Slightly faster multi-core speed.
+7%
468 Pts -7%
SC Mixed
OC Single Core Mixed Speed
121 Pts -18% 143 Pts Faster OC single-core speed.
+18%
QC Mixed
OC Quad Core Mixed Speed
446 Pts -26% 562 Pts Faster OC quad-core speed.
+26%
MC Mixed
OC Multi Core Mixed Speed
612 Pts Slightly faster OC multi-core speed.
+9%
563 Pts -9%
Market Share
Based on 4,095,196 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.79 % -114% 1.69 % Hugely higher market share.
+114%
Value
Value For Money
71.7 % -38% 98.8 % Much better value.
+38%
User Rating
UBM User Rating
70 % -41% 99 % Much more popular.
+41%
Price
Price (score)
$279 -23% $214 Cheaper.
+23%
Age
Newest
77 Months -71% 22 Months Much more recent.
+71%
TDP
Thermal Design Power (TDP)
95 Watts -4% 91 Watts +4%
Cores
CPU Processing Cores
4 cores 0% 4 cores 0%
Threads
CPU Processing Threads
8 threads Hugely higher thread count.
+100%
4 threads -100%
Lithography
Manufacturing process
32 nm -56% 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.4 GHz -3% 3.5 GHz +3%
Turbo Clock
Turbo Clock Speed
3.8 GHz -3% 3.9 GHz +3%
SC Int
Single Core Integer Speed
121 Pts -14% 138 Pts Slightly faster single-core int speed.
+14%
SC Float
Single Core Floating Point Speed
121 Pts -22% 148 Pts Faster single-core fp speed.
+22%
QC Int
Quad Core Integer Speed
449 Pts -21% 544 Pts Faster quad-core int speed.
+21%
QC Float
Quad Core Floating Point Speed
447 Pts -30% 582 Pts Much faster quad-core fp speed.
+30%
MC Int
Multi Core Integer Speed
590 Pts Slightly faster multi-core int speed.
+8%
546 Pts -8%
MC Float
Multi Core Floating Point Speed
608 Pts +4% 585 Pts -4%
Series
CPU Architecture
Sandy Bridge (2011) Skylake (2015)
Socket
Motherboard Socket
LGA1155 FCLGA1151
Graphics
Integrated Graphics
HD 3000 HD 530
Launch Date
Launch Date
Q1'11 Q3'15
Cache
Cache
8 MB SmartCache 6 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX 2.0
Lithography
Lithography
32 nm 14 nm
Recommended Price
Recommended Customer Price
N/A $242.00 - $243.00
Bus Speed
Bus Speed
5 GT/s DMI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1066/1333 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Bandwidth
Max Memory Bandwidth
21 GB/s 34.1 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 3000 Intel® HD Graphics 530
Graphics Base Frequency
Graphics Base Frequency
850 MHz 350 MHz
Wireless Display
Intel® Wireless Display
No Yes
# of Displays Supported
# of Displays Supported ‡
2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.35 GHz 1.15 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes
PCI Express Revision
PCI Express Revision
2.0 3.0

More specs » More specs »
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The i7-2600K Sandy Bridge processor is two generations old and nearly three years out of date. The numerous owners of this superb processor should feel in no hurry to upgrade as it's still one of the fastest consumer processors, even by today's standards. The benchmark figures indicate that in terms of real-world performance this processor is only 5% slower than the third generation Ivy Bridge i7-3770K, not bad considering its age. That said new buyers will find both better energy efficiency and marginal performance improvements elsewhere[Feb '12 CPUPro]

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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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Processor Rankings (Price vs Performance) June 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 $309Nvidia GTX 1070 $366Samsung 850 Evo 250GB $100
Intel Core i5-7600K $233AMD RX 480 $608Samsung 850 Pro 256GB $125
AMD Ryzen 7 1700 $297Nvidia GTX 1060-6GB $243Samsung 850 Evo 500GB $169
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $696SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46HyperX Fury DDR4 2133 C14 2x8GB $144SanDisk Ultra Fit 32GB $13
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