IntelBX80646I74790K
IntelBX80662I56500
Real World Speed
Performance profile from 135,166 user samples
95,186 User Benchmarks
Best Bench: 100% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 76% Base clock 4 GHz, turbo 1.2 GHz (avg)
Poor: 76% Great: 100%
SPEED RANK: 21st / 971
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
39,980 User Benchmarks
Best Bench: 80% Base clock 3.2 GHz
Worst Bench: 60% Base clock 3.2 GHz, turbo 0.8 GHz (avg)
Poor: 60% Great: 80%
SPEED RANK: 78th / 971
Gaming
Gaming 73%
Battleship
Desktop
Desktop 72%
Battleship
Workstation
Workstation 45%
Speed boat
Effective Speed
Effective CPU Speed
88.5 % Faster effective speed.
+21%
73.4 % -21%
SC Mixed
Avg. Single Core Mixed Speed
124 Pts Faster single-core speed.
+23%
101 Pts -23%
QC Mixed
Avg. Quad Core Mixed Speed
435 Pts Slightly faster quad-core speed.
+14%
380 Pts -14%
MC Mixed
Avg. Multi Core Mixed Speed
652 Pts Much faster multi-core speed.
+66%
392 Pts -66%
SC Mixed
OC Single Core Mixed Speed
136 Pts Faster OC single-core speed.
+21%
112 Pts -21%
QC Mixed
OC Quad Core Mixed Speed
511 Pts Faster OC quad-core speed.
+23%
416 Pts -23%
MC Mixed
OC Multi Core Mixed Speed
728 Pts Much faster OC multi-core speed.
+74%
418 Pts -74%
Market Share
Based on 5,137,357 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.01 % Hugely higher market share.
+95%
1.03 % -95%
Value
Value For Money
83.6 % -7% 89.4 % Slightly better value.
+7%
User Rating
UBM User Rating
98 % Much more popular.
+31%
75 % -31%
Price
Price (score)
$339 -49% $172 Much cheaper.
+49%
Age
Newest
39 Months -38% 24 Months Much more recent.
+38%
TDP
Thermal Design Power (TDP)
88 Watts -26% 65 Watts More energy efficient.
+26%
Cores
CPU Processing Cores
4 cores 0% 4 cores 0%
Threads
CPU Processing Threads
8 threads Hugely higher thread count.
+100%
4 threads -100%
Lithography
Manufacturing process
22 nm -36% 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
4 GHz Faster base frequency.
+25%
3.2 GHz -25%
Turbo Clock
Turbo Clock Speed
4.4 GHz Faster turbo frequency.
+22%
3.6 GHz -22%
SC Int
Single Core Integer Speed
139 Pts Faster single-core int speed.
+29%
108 Pts -29%
SC Float
Single Core Floating Point Speed
139 Pts Faster single-core fp speed.
+20%
116 Pts -20%
QC Int
Quad Core Integer Speed
516 Pts Faster quad-core int speed.
+28%
404 Pts -28%
QC Float
Quad Core Floating Point Speed
513 Pts Faster quad-core fp speed.
+19%
430 Pts -19%
MC Int
Multi Core Integer Speed
694 Pts Much faster multi-core int speed.
+71%
406 Pts -71%
MC Float
Multi Core Floating Point Speed
739 Pts Much faster multi-core fp speed.
+71%
432 Pts -71%
Series
CPU Architecture
Haswell (2013) Skylake (2015)
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
Trusted Execution Technology ‡
No Yes

More specs » More specs »
ADVERTISEMENT

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) September 2017 CPU Rankings.

Welcome to our desktop CPU comparison. We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by price to yield a value for money rating which is geared towards gamers. Calculated values don't always paint the whole picture so we check them against hundreds of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top CPUs. [CPUPro]

How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-7700K $295Nvidia GTX 1070 $410Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $270AMD RX 480 $350Samsung 850 Pro 256GB $120
Intel Core i5-7600K $210Nvidia GTX 1060-6GB $265Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $724SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $152SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $56HyperX Fury DDR4 2133 C14 2x8GB $141SanDisk Extreme 16GB $20
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback