IntelBX80646I74790K
IntelBX80677I77700K

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

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

Real World Speed
Performance profile from 347,663 user samples
155,774 User Benchmarks
Best Bench: 99% Base clock 4 GHz, turbo 4.7 GHz (avg)
Worst Bench: 73% Base clock 4 GHz, turbo 0.5 GHz (avg)
Poor: 73% Great: 99%
SPEED RANK: 46th / 1132
Gaming
Gaming 86%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 63%
Destroyer
191,889 User Benchmarks
Best Bench: 110% Base clock 4.2 GHz, turbo 5.3 GHz (avg)
Worst Bench: 80% Base clock 4.2 GHz, turbo 4.2 GHz (avg)
Poor: 80% Great: 110%
SPEED RANK: 25th / 1132
Gaming
Gaming 95%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 71%
Battleship
Effective Speed
Effective CPU Speed
85.6 % 95.4 % Slightly faster effective speed.
+11%
SC Mixed
Avg. Single Core Mixed Speed
122 Pts 137 Pts Slightly faster single-core speed.
+12%
QC Mixed
Avg. Quad Core Mixed Speed
415 Pts 462 Pts Slightly faster quad-core speed.
+11%
MC Mixed
Avg. Multi Core Mixed Speed
637 Pts 716 Pts Slightly faster multi-core speed.
+12%
SC Mixed
OC Single Core Mixed Speed
136 Pts 152 Pts Slightly faster OC single-core speed.
+12%
QC Mixed
OC Quad Core Mixed Speed
499 Pts 550 Pts Slightly faster OC quad-core speed.
+10%
MC Mixed
OC Multi Core Mixed Speed
722 Pts 812 Pts Slightly faster OC multi-core speed.
+12%
Market Share
Based on 11,636,704 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.68 % 2.32 % Much higher market share.
+38%
Value
Value For Money
78.7 % 89.1 % Slightly better value.
+13%
User Rating
UBM User Rating
94 % 133 % Much more popular.
+41%
Price
Price (score)
$365 $350 +4%
Age
Newest
52 Months 21 Months Much more recent.
+60%
TDP
Thermal Design Power (TDP)
88 Watts +3% 91 Watts
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
4 GHz 4.2 GHz +5%
Turbo Clock
Turbo Clock Speed
4.4 GHz 4.5 GHz +2%
SC Int
Single Core Integer Speed
138 Pts 148 Pts Slightly faster single-core int speed.
+7%
SC Float
Single Core Floating Point Speed
138 Pts 157 Pts Slightly faster single-core fp speed.
+14%
QC Int
Quad Core Integer Speed
506 Pts 538 Pts Slightly faster quad-core int speed.
+6%
QC Float
Quad Core Floating Point Speed
505 Pts 577 Pts Slightly faster quad-core fp speed.
+14%
MC Int
Multi Core Integer Speed
688 Pts 748 Pts Slightly faster multi-core int speed.
+9%
MC Float
Multi Core Floating Point Speed
735 Pts 866 Pts Faster multi-core fp speed.
+18%
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 8 MB
Lithography
Lithography
22 nm 14 nm
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
PCG 2013D PCG 2015D (130W)
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 1.15 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]

MORE DETAILS

The Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '17 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.
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CPUGPUSSD
Intel Core i7-8700K $380Nvidia GTX 1070 $345Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $249Samsung 850 Evo 500GB $98
Intel Core i7-7700K $350AMD RX 480 $280Samsung 850 Pro 256GB $160
HDDRAMUSB
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Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3000 C15 2x8GB $147SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $145SanDisk Ultra Fit 32GB $12
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