IntelBX80646I74790K
$348
IntelBX80677I57400
 $348 

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

4 Cores, 4 Threads @3.0GHz, Kaby Lake.
Release date: Q1 2017.

Real World Speed
Performance profile from 690,012 user samples
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
234,266 User Benchmarks
Best Bench: 73% Base clock 3 GHz, turbo 3.3 GHz (avg)
Worst Bench: 43% Base clock 3 GHz, turbo 3.3 GHz (avg)
Poor: 43% Great: 73%
SPEED RANK: 524th / 1442
Gaming
Gaming 64%
Destroyer
Desktop
Desktop 70%
Battle cruiser
Workstation
Workstation 47%
Yacht
Effective Speed
Effective CPU Speed
78.9 % Faster effective speed.
+24%
63.5 %
Memory
Avg. Memory Latency
88.1 Pts Lower memory latency.
+14%
77.6 Pts
1-Core
Avg. Single Core Speed
114 Pts Faster single-core speed.
+24%
92.1 Pts
2-Core
Avg. Dual Core Speed
216 Pts Faster dual-core speed.
+20%
180 Pts
4-Core
Avg. Quad Core Speed
378 Pts Much faster quad-core speed.
+33%
284 Pts
8-Core
Avg. Octa Core Speed
560 Pts Hugely faster octa-core speed.
+85%
303 Pts
Memory
OC Memory Latency
96.8 Pts Slightly lower OC memory latency.
+7%
90.4 Pts
1-Core
OC Single Core Speed
128 Pts Faster OC single-core speed.
+25%
102 Pts
2-Core
OC Dual Core Speed
248 Pts Faster OC dual-core speed.
+22%
203 Pts
4-Core
OC Quad Core Speed
433 Pts Faster OC quad-core speed.
+22%
355 Pts
8-Core
OC Octa Core Speed
643 Pts Much faster OC octa-core speed.
+77%
363 Pts
Market Share
Based on 67,711,591 CPUs tested
Market Share
Market Share (trailing 30 days)
0.58 % +4% 0.56 %
Value
Value For Money
74.2 % 81.9 % Better value.
+10%
User Rating
UBM User Rating
88 % Much more popular.
+63%
54 %
Price
Price (score)
$348 $110 Much cheaper.
+68%
Age
Newest
118 Months 87 Months More recent.
+26%
TDP
Thermal Design Power (TDP)
88 Watts 65 Watts More energy efficient.
+26%
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
4 GHz Much faster base frequency.
+33%
3 GHz
Turbo Clock
Turbo Clock Speed
4.4 GHz Faster turbo frequency.
+26%
3.5 GHz
64-Core
OC Multi Core Speed
654 Pts Much faster OC 64-core speed.
+78%
368 Pts
64-Core
Avg. Multi Core Speed
573 Pts Hugely faster 64-core speed.
+87%
307 Pts
Series
CPU Architecture
Haswell Kaby Lake
Socket
Motherboard Socket
FCLGA1150 FCLGA1151
Graphics
Integrated Graphics
HD 4600 HD 630
Launch Date
Launch Date
Q2'14 Q1'17
Cache
Cache
8 MB SmartCache 6 MB
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $182.00
Max Turbo Frequency
Max Turbo Frequency
4.4 GHz 3.50 GHz
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
PCG 2013D PCG 2015C (65W)
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 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4600 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350 MHz 350.00 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.25 GHz 1.00 GHz
Graphics Video Max Memory
Graphics Video Max Memory
2 GB 64 GB
TSX-NI
Intel® TSX-NI
No Yes

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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Processor Rankings (Price vs Performance) April 2024 CPU Rankings

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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  • Best user rated - User sentiment trumps benchmarks for this comparison.
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Welcome to our 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 value for money upgrades.

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 Frequently Asked Questions

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