IntelBX80646I74790K
$348
IntelBX80677I77700K
 $348 

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

VS
About

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

Real World Speed
Performance profile from 535,646 user samples
229,015 User Benchmarks
Best Bench: 89% Base clock 4.9 GHz, turbo 6 GHz (avg)
Worst Bench: 58% Base clock 4 GHz, turbo 0.45 GHz (avg)
Poor: 58% Great: 89%
SPEED RANK: 68th / 1182
Gaming
Gaming 75%
Battleship
Desktop
Desktop 82%
Aircraft carrier
Workstation
Workstation 55%
Gunboat
306,631 User Benchmarks
Best Bench: 96% Base clock 4.2 GHz, turbo 4.85 GHz (avg)
Worst Bench: 69% Base clock 0.8 GHz, turbo 0.8 GHz (avg)
Poor: 69% Great: 96%
SPEED RANK: 40th / 1182
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 91%
Nuclear submarine
Workstation
Workstation 62%
Destroyer
Effective Speed
Effective CPU Speed
74.5 % 82.5 % Slightly faster effective speed.
+11%
1-Core
Avg. Single Core Mixed Speed
123 Pts 136 Pts Slightly faster single-core speed.
+11%
2-Core
Avg. Dual Core Mixed Speed
237 Pts 262 Pts Slightly faster dual-core speed.
+11%
4-Core
Avg. Quad Core Mixed Speed
420 Pts 463 Pts Slightly faster quad-core speed.
+10%
8-Core
Avg. Octa Core Mixed Speed
619 Pts 694 Pts Slightly faster octa-core speed.
+12%
64-Core
Avg. Multi Core Mixed Speed
626 Pts 704 Pts Slightly faster 64-core speed.
+12%
1-Core
OC Single Core Mixed Speed
138 Pts 151 Pts Slightly faster OC single-core speed.
+9%
2-Core
OC Dual Core Mixed Speed
270 Pts 298 Pts Slightly faster OC dual-core speed.
+10%
4-Core
OC Quad Core Mixed Speed
512 Pts 554 Pts Slightly faster OC quad-core speed.
+8%
8-Core
OC Octa Core Mixed Speed
717 Pts 790 Pts Slightly faster OC octa-core speed.
+10%
64-Core
OC Multi Core Mixed Speed
720 Pts 792 Pts Slightly faster OC 64-core speed.
+10%
Market Share
Based on 20,339,312 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.17 % 1.43 % Higher market share.
+22%
Value
Value For Money
70.1 % 77.8 % Slightly better value.
+11%
User Rating
UBM User Rating
86 % 97 % Slightly more popular.
+13%
Price
Price (score)
$348 $345 +1%
Age
Newest
63 Months 32 Months Much more recent.
+49%
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%
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) September 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. 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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  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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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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