IntelBX80658i75775C
IntelBX80646I74790K
$348

4 Cores, 8 Threads @3.3 GHz, Broadwell.
Release date ≈ Q2 2015.

 $348 

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

Real World Speed
Performance profile from 458,273 user samples
2,527 User Benchmarks
Best Bench: 94% Base clock 3.3 GHz, turbo 4.7 GHz (avg)
Worst Bench: 75% Base clock 3.3 GHz, turbo 2.2 GHz (avg)
Poor: 75% Great: 94%
SPEED RANK: 183rd / 1442
Gaming
Gaming 85%
Aircraft carrier
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 70%
Battle cruiser
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: 251st / 1442
Gaming
Gaming 79%
Battleship
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed
84.9 % Slightly faster effective speed.
+8%
78.9 %
Memory
Avg. Memory Latency
93.1 Pts Slightly lower memory latency.
+6%
88.1 Pts
1-Core
Avg. Single Core Speed
118 Pts +4% 114 Pts
2-Core
Avg. Dual Core Speed
231 Pts Slightly faster dual-core speed.
+7%
216 Pts
4-Core
Avg. Quad Core Speed
416 Pts Faster quad-core speed.
+10%
378 Pts
8-Core
Avg. Octa Core Speed
615 Pts Slightly faster octa-core speed.
+10%
560 Pts
Memory
OC Memory Latency
99.2 Pts +2% 96.8 Pts
1-Core
OC Single Core Speed
137 Pts Slightly faster OC single-core speed.
+7%
128 Pts
2-Core
OC Dual Core Speed
275 Pts Faster OC dual-core speed.
+11%
248 Pts
4-Core
OC Quad Core Speed
497 Pts Faster OC quad-core speed.
+15%
433 Pts
8-Core
OC Octa Core Speed
725 Pts Faster OC octa-core speed.
+13%
643 Pts
Market Share
Based on 67,696,231 CPUs tested
Market Share
Market Share (trailing 30 days)
0.01 % 0.68 % Insanely higher market share.
+6,700%
Value
Value For Money
87.4 % Better value.
+18%
74.2 %
User Rating
UBM User Rating
51 % 88 % Much more popular.
+73%
Price
Price (score)
$250 Cheaper.
+28%
$348
Age
Newest
105+ Months More recent.
+11%
118 Months
64-Core
OC Multi Core Speed
723 Pts Faster OC 64-core speed.
+11%
654 Pts
64-Core
Avg. Multi Core Speed
617 Pts Slightly faster 64-core speed.
+8%
573 Pts
Launch Date
Launch Date
Q2'15 Q2'14
Cache
Cache
6 MB 8 MB SmartCache
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$366.00 - $377.00 $339.00 - $350.00
Max Turbo Frequency
Max Turbo Frequency
3.7 GHz 4.4 GHz
Thermal Solution Specification
Thermal Solution Specification
PCA 2013D PCG 2013D
Memory Types
Memory Types
DDR3L-1333/1600 @ 1.5V DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Processor Graphics
Processor Graphics ‡
Intel® Iris™ Pro Graphics 6200 Intel® HD Graphics 4600
Graphics Base Frequency
Graphics Base Frequency
300 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.25 GHz
Graphics Video Max Memory
Graphics Video Max Memory
32 GB 2 GB
Graphics and IMC Lithography
Graphics and IMC Lithography
14 nm 22 nm
TSX-NI
Intel® TSX-NI
Yes No

More specs » More specs »
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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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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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 Frequently Asked Questions

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