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IntelBX80646I74790
IntelBX80662I56600K
▲ 618,669 ▼

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

VS
▲ 7428,977 ▼

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

Effective Speed 
+1%
Real World Speed
Performance profile from 597,271 user samples
Benchmark your CPU here
255,027 User Benchmarks
Best Bench: 80% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 58% Base clock 3.6 GHz, turbo 1.5 GHz (avg)
Poor: 58% Great: 80%
SPEED RANK: 391st / 1468
Gaming
Gaming 71%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 58%
Gunboat
342,244 User Benchmarks
Best Bench: 85% Base clock 3.5 GHz, turbo 4.7 GHz (avg)
Worst Bench: 57% Base clock 3.5 GHz, turbo 3.55 GHz (avg)
Poor: 57% Great: 85%
SPEED RANK: 375th / 1468
Gaming
Gaming 72%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 55%
Yacht
Effective Speed
Effective CPU Speed 		71.4 % 72.4 % +1%
Average Score 
+2%
Memory
Avg. Memory Latency 		82.6 Pts 83.3 Pts +1%
1-Core
Avg. Single Core Speed 		98.4 Pts 110 Pts Faster single-core speed.
+12%
2-Core
Avg. Dual Core Speed 		187 Pts 218 Pts Faster dual-core speed.
+17%
4-Core
Avg. Quad Core Speed 		327 Pts 352 Pts Slightly faster quad-core speed.
+8%
8-Core
Avg. Octa Core Speed 		482 Pts Faster octa-core speed.
+29% 		373 Pts
Overclocked Score 
+11%
Memory
OC Memory Latency 		93.6 Pts 95.2 Pts +2%
1-Core
OC Single Core Speed 		109 Pts 136 Pts Faster OC single-core speed.
+25%
2-Core
OC Dual Core Speed 		214 Pts 269 Pts Faster OC dual-core speed.
+26%
4-Core
OC Quad Core Speed 		377 Pts 455 Pts Faster OC quad-core speed.
+21%
8-Core
OC Octa Core Speed 		551 Pts Faster OC octa-core speed.
+16% 		476 Pts
Value & Sentiment 
+6%
Market Share
Based on 69,001,153 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.64 % Higher market share.
+14% 		0.56 %
Value
Value For Money 		93.6 % 98.7 % Slightly better value.
+5%
User Rating
UBM User Rating 		61 % 74 % More popular.
+21%
Price
Price (score) 		$104 $90 Cheaper.
+13%
Nice To Haves 
+12%
Age
Newest 		126 Months 111 Months More recent.
+12%
TDP
Thermal Design Power (TDP) 		84 Watts Slightly more energy efficient.
+8% 		91 Watts
Cores
CPU Processing Cores 		4 cores 4 cores
Threads
CPU Processing Threads 		8 threads Hugely higher thread count.
+100% 		4 threads
Lithography
Manufacturing process 		22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed 		3.6 GHz +3% 3.5 GHz
Turbo Clock
Turbo Clock Speed 		4 GHz +3% 3.9 GHz
64-Core
OC Multi Core Speed 		556 Pts Faster OC 64-core speed.
+15% 		484 Pts
64-Core
Avg. Multi Core Speed 		495 Pts Much faster 64-core speed.
+31% 		378 Pts
Specifications 
Series
CPU Architecture 		Haswell Skylake
Socket
Motherboard Socket 		FCLGA1150 FCLGA1151
Graphics
Integrated Graphics 		HD 4600 HD 530
Launch Date
Launch Date 		Q2'14 Q3'15
Cache
Cache 		8 MB SmartCache 6 MB SmartCache
Lithography
Lithography 		22 nm 14 nm
Recommended Price
Recommended Customer Price 		$303.00 - $312.00 $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency 		4 GHz 3.9 GHz
Bus Speed
Bus Speed 		5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification 		PCG 2013D PCG 2015D (130W)
Max Memory Size
Max Memory Size (dependent on memory type) 		32 GB 64 GB
Memory Types
Memory Types 		DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Bandwidth
Max Memory Bandwidth 		25.6 GB/s 34.1 GB/s
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics 4600 Intel® HD Graphics 530
Graphics Output
Graphics Output 		eDP/DP/HDMI/DVI/VGA eDP/DP/HDMI/DVI
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.2 GHz 1.15 GHz
Graphics Video Max Memory
Graphics Video Max Memory 		2 GB 64 GB
Graphics and IMC Lithography
Graphics and IMC Lithography 		22 nm 14 nm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		Yes No
TSX-NI
Intel® TSX-NI 		No Yes
vPro Tech
Intel® vPro™ Technology ‡ 		Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP) 		Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		Yes No
PCI Express Revision
PCI Express Revision 		Up to 3.0 3.0

More specs » More specs »
Conclusion 
Average Bench 71.4%
Average Bench 72.4%

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

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

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We calculate effective speed which measures real world performance for typical 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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