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IntelBX80662I76700
IntelBX80646I74790K
$348
▲ 6013,379 ▼

4 Cores, 8 Threads @3.4GHz, Skylake.
Release date: Q3 2015.

VS
▲ 8841,766 ▼
 $348 

4 Cores, 8 Threads @4.0GHz, Haswell.
Release date: Q2 2014.

Effective Speed 
+9%
Real World Speed
Performance profile from 738,109 user samples
Benchmark your CPU here
282,363 User Benchmarks
Best Bench: 80% Base clock 3.4 GHz, turbo 3.7 GHz (avg)
Worst Bench: 60% Base clock 3.4 GHz, turbo 3.7 GHz (avg)
Poor: 60% Great: 80%
SPEED RANK: 376th / 1468
Gaming
Gaming 72%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 59%
Gunboat
455,746 User Benchmarks
Best Bench: 87% Base clock 4 GHz, turbo 4.6 GHz (avg)
Worst Bench: 67% Base clock 4 GHz, turbo 0.7 GHz (avg)
Poor: 67% Great: 87%
SPEED RANK: 270th / 1468
Gaming
Gaming 79%
Battleship
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed 		72.3 % 78.9 % Slightly faster effective speed.
+9%
Average Score 
+10%
Memory
Avg. Memory Latency 		81.2 Pts 88.1 Pts Slightly lower memory latency.
+8%
1-Core
Avg. Single Core Speed 		101 Pts 114 Pts Faster single-core speed.
+13%
2-Core
Avg. Dual Core Speed 		193 Pts 216 Pts Faster dual-core speed.
+12%
4-Core
Avg. Quad Core Speed 		343 Pts 378 Pts Faster quad-core speed.
+10%
8-Core
Avg. Octa Core Speed 		517 Pts 560 Pts Slightly faster octa-core speed.
+8%
Overclocked Score 
+11%
Memory
OC Memory Latency 		91.1 Pts 96.8 Pts Slightly lower OC memory latency.
+6%
1-Core
OC Single Core Speed 		112 Pts 128 Pts Faster OC single-core speed.
+14%
2-Core
OC Dual Core Speed 		219 Pts 248 Pts Faster OC dual-core speed.
+13%
4-Core
OC Quad Core Speed 		384 Pts 433 Pts Faster OC quad-core speed.
+13%
8-Core
OC Octa Core Speed 		587 Pts 643 Pts Slightly faster OC octa-core speed.
+10%
Value & Sentiment 
+8%
Market Share
Based on 68,910,427 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.73 % Slightly higher market share.
+7% 		0.68 %
Value
Value For Money 		85.7 % Better value.
+15% 		74.2 %
User Rating
UBM User Rating 		60 % 88 % Much more popular.
+47%
Price
Price (score) 		$150 Much cheaper.
+57% 		$348
Nice To Haves 
+3%
Age
Newest 		110 Months More recent.
+12% 		125 Months
TDP
Thermal Design Power (TDP) 		65 Watts More energy efficient.
+26% 		88 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.
+36% 		22 nm
Base Clock
Base Clock Speed 		3.4 GHz 4 GHz Faster base frequency.
+18%
Turbo Clock
Turbo Clock Speed 		4 GHz 4.4 GHz Faster turbo frequency.
+10%
64-Core
OC Multi Core Speed 		595 Pts 654 Pts Slightly faster OC 64-core speed.
+10%
64-Core
Avg. Multi Core Speed 		534 Pts 573 Pts Slightly faster 64-core speed.
+7%
Specifications 
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
Embedded Options Available
Embedded Options Available 		Yes No
Lithography
Lithography 		14 nm 22 nm
Recommended Price
Recommended Customer Price 		$303.00 - $312.00 $339.00 - $350.00
Max Turbo Frequency
Max Turbo Frequency 		4 GHz 4.4 GHz
Bus Speed
Bus Speed 		8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015C (65W) 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 1.25 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 ‡ 		Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP) 		Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		Yes No

More specs » More specs »
Conclusion 
Average Bench 72.3%
Average Bench 78.9%

The Intel Core i7-4790K, codenamed Devil's Canyon, is an upgraded 4770K, Intel's current flagship i7. The 4790K features an improved thermal interface which enables it to dissipate heat more efficiently than the 4770K. Comparing the 4770K and 4790K shows that stock performance has improved by 13% which is consistent with the base clock jump from 3.5 GHz to 4.0 GHz. OC performance remains unchanged. Comparing the 4790K and 4790 shows that at stock clocks the 4790K is around 16% faster which considering the small price difference makes the 4790K a far better choice. Previously Intel targeted the unlocked K versions at overclockers but with Devil's Canyon they have included VT-d on the K chip and this time it's squarely aimed at both power users and overclockers alike. Until the release of Broadwell in six months, the 4790K is the high end CPU of choice. [Jul '14 CPUPro]

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