IntelBX80646I74790K
IntelBX80662I56500

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

4 Cores, 4 Threads @3.2GHz, Skylake.
Release date: Q3 2015.

Real World Speed
Performance profile from 215,380 user samples
149,917 User Benchmarks
Best Bench: 98% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 67% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 67% Great: 98%
SPEED RANK: 46th / 1122
Gaming
Gaming 85%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 62%
Destroyer
65,463 User Benchmarks
Best Bench: 78% Base clock 3.2 GHz, turbo 3.2 GHz (avg)
Worst Bench: 55% Base clock 3.2 GHz, turbo 3.35 GHz (avg)
Poor: 55% Great: 78%
SPEED RANK: 118th / 1122
Gaming
Gaming 71%
Battleship
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 43%
Speed boat
Effective Speed
Effective CPU Speed
84.5 % Faster effective speed.
+19%
71.2 %
SC Mixed
Avg. Single Core Mixed Speed
121 Pts Faster single-core speed.
+24%
97.8 Pts
QC Mixed
Avg. Quad Core Mixed Speed
410 Pts Slightly faster quad-core speed.
+11%
369 Pts
MC Mixed
Avg. Multi Core Mixed Speed
622 Pts Much faster multi-core speed.
+65%
378 Pts
SC Mixed
OC Single Core Mixed Speed
135 Pts Faster OC single-core speed.
+23%
110 Pts
QC Mixed
OC Quad Core Mixed Speed
495 Pts Faster OC quad-core speed.
+21%
410 Pts
MC Mixed
OC Multi Core Mixed Speed
715 Pts Much faster OC multi-core speed.
+74%
411 Pts
Market Share
Based on 10,317,612 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.68 % Hugely higher market share.
+143%
0.69 %
Value
Value For Money
78.8 % 88.1 % Slightly better value.
+12%
User Rating
UBM User Rating
81 % More popular.
+25%
65 %
Price
Price (score)
$352 $165 Much cheaper.
+53%
Age
Newest
50 Months 35 Months Much more recent.
+30%
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 Faster base frequency.
+25%
3.2 GHz
Turbo Clock
Turbo Clock Speed
4.4 GHz Faster turbo frequency.
+22%
3.6 GHz
SC Int
Single Core Integer Speed
136 Pts Faster single-core int speed.
+30%
105 Pts
SC Float
Single Core Floating Point Speed
135 Pts Faster single-core fp speed.
+17%
115 Pts
QC Int
Quad Core Integer Speed
502 Pts Faster quad-core int speed.
+27%
395 Pts
QC Float
Quad Core Floating Point Speed
497 Pts Faster quad-core fp speed.
+16%
427 Pts
MC Int
Multi Core Integer Speed
678 Pts Much faster multi-core int speed.
+71%
396 Pts
MC Float
Multi Core Floating Point Speed
725 Pts Much faster multi-core fp speed.
+69%
428 Pts
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
Embedded Options Available
Embedded Options Available
No Yes
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $192.00 - $202.00
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 DDR4-1866/2133, 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
1.25 GHz 1.05 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 ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
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]

MORE DETAILS

Processor Rankings (Price vs Performance) August 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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Welcome to our freeware 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 upgrades.

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How it works

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  • - CPU tests include: integer, floating and string.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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 Frequently Asked Questions

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