IntelBX80662I76700K
IntelBX80646I74790

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

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

Real World Speed
Performance profile from 311,281 user samples
237,431 User Benchmarks
Best Bench: 103% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 76% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 76% Great: 103%
SPEED RANK: 38th / 1132
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 90%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
73,850 User Benchmarks
Best Bench: 85% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 60% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 60% Great: 85%
SPEED RANK: 97th / 1132
Gaming
Gaming 74%
Battleship
Desktop
Desktop 76%
Battleship
Workstation
Workstation 55%
Gunboat
Effective Speed
Effective CPU Speed
88.4 % Faster effective speed.
+19%
74.1 %
SC Mixed
Avg. Single Core Mixed Speed
126 Pts Faster single-core speed.
+19%
106 Pts
QC Mixed
Avg. Quad Core Mixed Speed
430 Pts Faster quad-core speed.
+20%
359 Pts
MC Mixed
Avg. Multi Core Mixed Speed
666 Pts Faster multi-core speed.
+20%
556 Pts
SC Mixed
OC Single Core Mixed Speed
142 Pts Faster OC single-core speed.
+20%
118 Pts
QC Mixed
OC Quad Core Mixed Speed
519 Pts Faster OC quad-core speed.
+21%
429 Pts
MC Mixed
OC Multi Core Mixed Speed
759 Pts Faster OC multi-core speed.
+26%
603 Pts
Market Share
Based on 11,645,802 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.97 % Hugely higher market share.
+110%
0.94 %
Value
Value For Money
87.5 % Better value.
+21%
72.6 %
User Rating
UBM User Rating
82 % Slightly more popular.
+14%
72 %
Price
Price (score)
$300 +3% $308
Age
Newest
38 Months More recent.
+28%
53 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
SC Int
Single Core Integer Speed
138 Pts Faster single-core int speed.
+18%
117 Pts
SC Float
Single Core Floating Point Speed
147 Pts Faster single-core fp speed.
+22%
120 Pts
QC Int
Quad Core Integer Speed
504 Pts Faster quad-core int speed.
+17%
432 Pts
QC Float
Quad Core Floating Point Speed
541 Pts Faster quad-core fp speed.
+26%
430 Pts
MC Int
Multi Core Integer Speed
691 Pts Faster multi-core int speed.
+20%
578 Pts
MC Float
Multi Core Floating Point Speed
809 Pts Much faster multi-core fp speed.
+32%
615 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) October 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.
  • 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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