IntelBX80646I74790
IntelBX80677I77700K

4 Cores, 8 Threads @3.6GHz, Haswell.
Release date: Q2 2014.

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

Real World Speed
Performance profile from 391,547 user samples
106,132 User Benchmarks
Best Bench: 86% Base clock 0.8 GHz, turbo 4 GHz (avg)
Worst Bench: 62% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 62% Great: 86%
SPEED RANK: 105th / 1158
Gaming
Gaming 76%
Battleship
Desktop
Desktop 77%
Battleship
Workstation
Workstation 56%
Gunboat
285,415 User Benchmarks
Best Bench: 109% Base clock 4.2 GHz, turbo 5.15 GHz (avg)
Worst Bench: 82% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 82% Great: 109%
SPEED RANK: 39th / 1158
Gaming
Gaming 96%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 70%
Battleship
Effective Speed
Effective CPU Speed
75.9 % 95.5 % Faster effective speed.
+26%
SC Mixed
Avg. Single Core Mixed Speed
108 Pts 135 Pts Faster single-core speed.
+25%
QC Mixed
Avg. Quad Core Mixed Speed
370 Pts 467 Pts Faster quad-core speed.
+26%
MC Mixed
Avg. Multi Core Mixed Speed
558 Pts 705 Pts Faster multi-core speed.
+26%
SC Mixed
OC Single Core Mixed Speed
118 Pts 150 Pts Faster OC single-core speed.
+27%
QC Mixed
OC Quad Core Mixed Speed
439 Pts 551 Pts Faster OC quad-core speed.
+26%
MC Mixed
OC Multi Core Mixed Speed
596 Pts 798 Pts Much faster OC multi-core speed.
+34%
Market Share
Based on 17,786,643 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.91 % 1.65 % Hugely higher market share.
+81%
Value
Value For Money
74.3 % 88.3 % Better value.
+19%
User Rating
UBM User Rating
70 % 131 % Hugely more popular.
+87%
Price
Price (score)
$308 Slightly cheaper.
+14%
$359
Age
Newest
61 Months 29 Months Much more recent.
+52%
TDP
Thermal Design Power (TDP)
84 Watts Slightly more energy efficient.
+8%
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
3.6 GHz 4.2 GHz Faster base frequency.
+17%
Turbo Clock
Turbo Clock Speed
4 GHz 4.5 GHz Slightly faster turbo frequency.
+12%
SC Int
Single Core Integer Speed
117 Pts 146 Pts Faster single-core int speed.
+25%
SC Float
Single Core Floating Point Speed
120 Pts 157 Pts Much faster single-core fp speed.
+31%
QC Int
Quad Core Integer Speed
437 Pts 536 Pts Faster quad-core int speed.
+23%
QC Float
Quad Core Floating Point Speed
441 Pts 573 Pts Faster quad-core fp speed.
+30%
MC Int
Multi Core Integer Speed
564 Pts 727 Pts Faster multi-core int speed.
+29%
MC Float
Multi Core Floating Point Speed
605 Pts 852 Pts Much faster multi-core fp speed.
+41%
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
Recommended Price
Recommended Customer Price
$303.00 - $312.00 $339.00 - $350.00
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
1.2 GHz 1.15 GHz
Graphics Video Max Memory
Graphics Video Max Memory
2 GB 64 GB
TSX-NI
Intel® TSX-NI
No Yes
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
PCI Express Revision
PCI Express Revision
Up to 3.0 3.0

More specs » More specs »
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The Core i7-4790 is the third upgrade to Intel's flagship quad core hyper-threaded CPU. This version, like its predecessor the i7-4771, gets a 100 MHz bump in stock frequency and additionally the i7-4790 also gets a 100 MHz turbo frequency bump. These improvements (~4%) are marginal and practically impossible to discern in day to day use. Looking at a benchmark comparison between the 4771 and 4790 verifies that there is little difference between the two CPUs. Although the i7-4790 isn't much of a step forward, it's still one of the best (locked) mainstream processors on the market. AMD hasn't been able to compete with Intel on single threaded performance for several years, consequently Intel have no need to push the envelope. Overclockers should wait for the 4790K which is rumoured to be released shortly. [May '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) June 2019 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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