IntelBX80662I76700K
IntelBX80623I72600K

4 Cores, 8 Threads
@4.0GHz Skylake (2015)

4 Cores, 8 Threads
@3.4GHz Sandy Bridge (2011)

Real World Speed
Performance profile from 253,249 user samples
204,877 User Benchmarks
Best Bench: 105% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 76% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 76% Great: 105%
SPEED RANK: 31st / 1100
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 67%
Battle cruiser
48,372 User Benchmarks
Best Bench: 89% Base clock 3.4 GHz, turbo 5 GHz (avg)
Worst Bench: 56% Base clock 3.4 GHz
Poor: 56% Great: 89%
SPEED RANK: 125th / 1100
Gaming
Gaming 70%
Battleship
Desktop
Desktop 72%
Battleship
Workstation
Workstation 51%
Yacht
Effective Speed
Effective CPU Speed
90.6 % Faster effective speed.
+29%
70.4 %
SC Mixed
Avg. Single Core Mixed Speed
128 Pts Faster single-core speed.
+27%
101 Pts
QC Mixed
Avg. Quad Core Mixed Speed
442 Pts Faster quad-core speed.
+28%
344 Pts
MC Mixed
Avg. Multi Core Mixed Speed
679 Pts Much faster multi-core speed.
+35%
502 Pts
SC Mixed
OC Single Core Mixed Speed
144 Pts Faster OC single-core speed.
+19%
121 Pts
QC Mixed
OC Quad Core Mixed Speed
527 Pts Faster OC quad-core speed.
+18%
446 Pts
MC Mixed
OC Multi Core Mixed Speed
771 Pts Faster OC multi-core speed.
+25%
619 Pts
Market Share
Based on 8,479,018 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.75 % Hugely higher market share.
+212%
0.56 %
Value
Value For Money
83.8 % Better value.
+29%
65 %
User Rating
UBM User Rating
91 % More popular.
+25%
73 %
Price
Price (score)
$359 +1% $361
Age
Newest
32 Months Much more recent.
+63%
87 Months
TDP
Thermal Design Power (TDP)
91 Watts +4% 95 Watts
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
4 GHz Faster base frequency.
+18%
3.4 GHz
Turbo Clock
Turbo Clock Speed
4.2 GHz Slightly faster turbo frequency.
+11%
3.8 GHz
SC Int
Single Core Integer Speed
142 Pts Faster single-core int speed.
+17%
121 Pts
SC Float
Single Core Floating Point Speed
147 Pts Faster single-core fp speed.
+20%
122 Pts
QC Int
Quad Core Integer Speed
516 Pts Faster quad-core int speed.
+16%
445 Pts
QC Float
Quad Core Floating Point Speed
547 Pts Faster quad-core fp speed.
+20%
455 Pts
MC Int
Multi Core Integer Speed
710 Pts Faster multi-core int speed.
+18%
600 Pts
MC Float
Multi Core Floating Point Speed
813 Pts Much faster multi-core fp speed.
+32%
617 Pts
Series
CPU Architecture
Skylake (2015) Sandy Bridge (2011)
Socket
Motherboard Socket
FCLGA1151 LGA1155
Graphics
Integrated Graphics
HD 530 HD 3000
Launch Date
Launch Date
Q3'15 Q1'11
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX
Lithography
Lithography
14 nm 32 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
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 1066/1333
Memory Bandwidth
Max Memory Bandwidth
34.1 GB/s 21 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® HD Graphics 3000
Graphics Base Frequency
Graphics Base Frequency
350 MHz 850 MHz
Wireless Display
Intel® Wireless Display
Yes No
# of Displays Supported
# of Displays Supported ‡
3 2
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.35 GHz
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Yes No
PCI Express Revision
PCI Express Revision
3.0 2.0

More specs » More specs »
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The Core i7-6700K is Intel's latest "Skylake" flagship processor. It replaces the hugely successful i7-4790K and takes the crown as the fastest mainstream consumer CPU available. Comparing performance and specs between the 4790K and 6700K shows that the configuration is largely unchanged (same base clocks, cores, threads) but the improved manufacturing process (14nm) brings a small reduction in TDP and a performance improvement of 8%; almost exactly the same jump as between the Ivy Bridge 3770K and Haswell 4770K. Owners of any unlocked-K Intel CPU from Sandy Bridge or onwards still have no real reason to upgrade as the performance improvements are largely academic but the i7-6700K will be the CPU of choice for the vast majority of top end PC builds in 2015. [Aug '15 CPUPro]

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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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Processor Rankings (Price vs Performance) April 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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.

 Frequently Asked Questions

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