IntelBX80662I76700
IntelBX80646I74790K

4 Cores, 8 Threads @3.4GHz, Skylake.
Release date: Q3 2015.

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

Real World Speed
Performance profile from 238,287 user samples
75,317 User Benchmarks
Best Bench: 87% Base clock 3.4 GHz, turbo 3.4 GHz (avg)
Worst Bench: 63% Base clock 3.4 GHz, turbo 3.4 GHz (avg)
Poor: 63% Great: 87%
SPEED RANK: 82nd / 1128
Gaming
Gaming 76%
Battleship
Desktop
Desktop 77%
Battleship
Workstation
Workstation 57%
Gunboat
162,970 User Benchmarks
Best Bench: 98% Base clock 4 GHz, turbo 4.7 GHz (avg)
Worst Bench: 70% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 70% Great: 98%
SPEED RANK: 43rd / 1128
Gaming
Gaming 85%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 63%
Destroyer
Effective Speed
Effective CPU Speed
76.2 % 85 % Slightly faster effective speed.
+12%
SC Mixed
Avg. Single Core Mixed Speed
107 Pts 121 Pts Slightly faster single-core speed.
+13%
QC Mixed
Avg. Quad Core Mixed Speed
372 Pts 414 Pts Slightly faster quad-core speed.
+11%
MC Mixed
Avg. Multi Core Mixed Speed
582 Pts 634 Pts Slightly faster multi-core speed.
+9%
SC Mixed
OC Single Core Mixed Speed
121 Pts 136 Pts Slightly faster OC single-core speed.
+12%
QC Mixed
OC Quad Core Mixed Speed
441 Pts 495 Pts Slightly faster OC quad-core speed.
+12%
MC Mixed
OC Multi Core Mixed Speed
624 Pts 715 Pts Slightly faster OC multi-core speed.
+15%
Market Share
Based on 11,473,815 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.88 % 1.57 % Much higher market share.
+78%
Value
Value For Money
73.7 % 78.2 % Slightly better value.
+6%
User Rating
UBM User Rating
65 % 90 % Much more popular.
+38%
Price
Price (score)
$319 Slightly cheaper.
+13%
$365
Age
Newest
37 Months More recent.
+29%
52 Months
TDP
Thermal Design Power (TDP)
65 Watts More energy efficient.
+26%
88 Watts
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
3.4 GHz 4 GHz Faster base frequency.
+18%
Turbo Clock
Turbo Clock Speed
4 GHz 4.4 GHz Slightly faster turbo frequency.
+10%
SC Int
Single Core Integer Speed
117 Pts 136 Pts Faster single-core int speed.
+16%
SC Float
Single Core Floating Point Speed
125 Pts 137 Pts Slightly faster single-core fp speed.
+10%
QC Int
Quad Core Integer Speed
436 Pts 503 Pts Faster quad-core int speed.
+15%
QC Float
Quad Core Floating Point Speed
460 Pts 501 Pts Slightly faster quad-core fp speed.
+9%
MC Int
Multi Core Integer Speed
576 Pts 680 Pts Faster multi-core int speed.
+18%
MC Float
Multi Core Floating Point Speed
658 Pts 727 Pts Slightly faster multi-core fp speed.
+10%
Series
CPU Architecture
Skylake Haswell
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 530 HD 4600
Launch Date
Launch Date
Q3'15 Q2'14
Embedded Options Available
Embedded Options Available
Yes No
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$303.00 - $312.00 $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
1.15 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
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
Intel® 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) October 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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  • - 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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