IntelBX80662I56500
IntelBX80646I74790K
Real World Speed
Performance profile from 135,166 user samples
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
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
Effective Speed
Effective CPU Speed
73.4 % -21% 88.5 % Faster effective speed.
+21%
SC Mixed
Avg. Single Core Mixed Speed
101 Pts -23% 124 Pts Faster single-core speed.
+23%
QC Mixed
Avg. Quad Core Mixed Speed
380 Pts -14% 435 Pts Slightly faster quad-core speed.
+14%
MC Mixed
Avg. Multi Core Mixed Speed
392 Pts -66% 652 Pts Much faster multi-core speed.
+66%
SC Mixed
OC Single Core Mixed Speed
112 Pts -21% 136 Pts Faster OC single-core speed.
+21%
QC Mixed
OC Quad Core Mixed Speed
416 Pts -23% 511 Pts Faster OC quad-core speed.
+23%
MC Mixed
OC Multi Core Mixed Speed
418 Pts -74% 728 Pts Much faster OC multi-core speed.
+74%
Market Share
Based on 5,137,357 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.03 % -95% 2.01 % Hugely higher market share.
+95%
Value
Value For Money
89.4 % Slightly better value.
+7%
83.6 % -7%
User Rating
UBM User Rating
75 % -31% 98 % Much more popular.
+31%
Price
Price (score)
$172 Much cheaper.
+49%
$339 -49%
Age
Newest
24 Months Much more recent.
+38%
39 Months -38%
TDP
Thermal Design Power (TDP)
65 Watts More energy efficient.
+26%
88 Watts -26%
Cores
CPU Processing Cores
4 cores 0% 4 cores 0%
Threads
CPU Processing Threads
4 threads -100% 8 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm -36%
Base Clock
Base Clock Speed
3.2 GHz -25% 4 GHz Faster base frequency.
+25%
Turbo Clock
Turbo Clock Speed
3.6 GHz -22% 4.4 GHz Faster turbo frequency.
+22%
SC Int
Single Core Integer Speed
108 Pts -29% 139 Pts Faster single-core int speed.
+29%
SC Float
Single Core Floating Point Speed
116 Pts -20% 139 Pts Faster single-core fp speed.
+20%
QC Int
Quad Core Integer Speed
404 Pts -28% 516 Pts Faster quad-core int speed.
+28%
QC Float
Quad Core Floating Point Speed
430 Pts -19% 513 Pts Faster quad-core fp speed.
+19%
MC Int
Multi Core Integer Speed
406 Pts -71% 694 Pts Much faster multi-core int speed.
+71%
MC Float
Multi Core Floating Point Speed
432 Pts -71% 739 Pts Much faster multi-core fp speed.
+71%
Series
CPU Architecture
Skylake (2015) Haswell (2013)
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 530 HD 4600
Launch Date
Launch Date
Q3'15 Q2'14
Cache
Cache
6 MB SmartCache 8 MB SmartCache
Embedded Options Available
Embedded Options Available
Yes No
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$192.00 - $202.00 $339.00 - $350.00
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
1.05 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
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
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
Trusted Execution Technology ‡
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]

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]

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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.

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  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - 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.
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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
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