IntelBX80662I76700K
IntelBX80646I74790

4 Cores, 8 Threads @4.0GHz, Skylake.
Release date: Q3 2015.

VS
About

4 Cores, 8 Threads @3.6GHz, Haswell.
Release date: Q2 2014.

Real World Speed
Performance profile from 476,518 user samples
351,790 User Benchmarks
Best Bench: 94% Base clock 4 GHz, turbo 4.7 GHz (avg)
Worst Bench: 67% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 67% Great: 94%
SPEED RANK: 60th / 1206
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 57%
Gunboat
124,728 User Benchmarks
Best Bench: 78% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 58% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 58% Great: 78%
SPEED RANK: 130th / 1206
Gaming
Gaming 69%
Battle cruiser
Desktop
Desktop 72%
Battleship
Workstation
Workstation 49%
Yacht
Effective Speed
Effective CPU Speed
81 % Faster effective speed.
+17%
69.5 %
1-Core
Avg. Single Core Mixed Speed
126 Pts Faster single-core speed.
+16%
109 Pts
2-Core
Avg. Dual Core Mixed Speed
243 Pts Faster dual-core speed.
+16%
210 Pts
4-Core
Avg. Quad Core Mixed Speed
433 Pts Faster quad-core speed.
+17%
370 Pts
8-Core
Avg. Octa Core Mixed Speed
645 Pts Faster octa-core speed.
+16%
555 Pts
1-Core
OC Single Core Mixed Speed
143 Pts Faster OC single-core speed.
+21%
118 Pts
2-Core
OC Dual Core Mixed Speed
283 Pts Faster OC dual-core speed.
+21%
234 Pts
4-Core
OC Quad Core Mixed Speed
528 Pts Faster OC quad-core speed.
+21%
437 Pts
8-Core
OC Octa Core Mixed Speed
749 Pts Faster OC octa-core speed.
+26%
594 Pts
Market Share
Based on 22,711,973 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.39 % Hugely higher market share.
+81%
0.77 %
Value
Value For Money
79.5 % Better value.
+20%
66.4 %
User Rating
UBM User Rating
114 % Much more popular.
+37%
83 %
Price
Price (score)
$298 Slightly cheaper.
+9%
$327
Age
Newest
52 Months More recent.
+22%
67 Months
TDP
Thermal Design Power (TDP)
91 Watts 84 Watts Slightly more energy efficient.
+8%
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
4 GHz Slightly faster base frequency.
+11%
3.6 GHz
Turbo Clock
Turbo Clock Speed
4.2 GHz +5% 4 GHz
64-Core
OC Multi Core Mixed Speed
751 Pts Faster OC 64-core speed.
+26%
597 Pts
64-Core
Avg. Multi Core Mixed Speed
652 Pts Faster 64-core speed.
+16%
561 Pts
Series
CPU Architecture
Skylake Haswell
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 530 HD 4600
Launch Date
Launch Date
Q3'15 Q2'14
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $303.00 - $312.00
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 1.2 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
TSX-NI
Intel® TSX-NI
Yes No
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Revision
PCI Express Revision
3.0 Up to 3.0

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]

MORE DETAILS

The Core i7-4790 is the third upgrade to Intel's flagship quad core hyper-threaded CPU. This version, like its predecessor the i7-4771, gets a 100 MHz bump in stock frequency and additionally the i7-4790 also gets a 100 MHz turbo frequency bump. These improvements (~4%) are marginal and practically impossible to discern in day to day use. Looking at a benchmark comparison between the 4771 and 4790 verifies that there is little difference between the two CPUs. Although the i7-4790 isn't much of a step forward, it's still one of the best (locked) mainstream processors on the market. AMD hasn't been able to compete with Intel on single threaded performance for several years, consequently Intel have no need to push the envelope. Overclockers should wait for the 4790K which is rumoured to be released shortly. [May '14 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) December 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. Effective speed is adjusted by current prices to yield a value for money rating. 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.
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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

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The Best.
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HDDRAMUSB
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