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 290,910 user samples
72,086 User Benchmarks
Best Bench: 85% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 57% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 57% Great: 85%
SPEED RANK: 108th / 1143
Gaming
Gaming 74%
Battleship
Desktop
Desktop 76%
Battleship
Workstation
Workstation 55%
Yacht
218,824 User Benchmarks
Best Bench: 111% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 83% Base clock 4.2 GHz, turbo 0.35 GHz (avg)
Poor: 83% Great: 111%
SPEED RANK: 31st / 1143
Gaming
Gaming 96%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 71%
Battleship
Effective Speed
Effective CPU Speed
74 % 95.7 % Faster effective speed.
+29%
SC Mixed
Avg. Single Core Mixed Speed
107 Pts 136 Pts Faster single-core speed.
+27%
QC Mixed
Avg. Quad Core Mixed Speed
357 Pts 466 Pts Much faster quad-core speed.
+31%
MC Mixed
Avg. Multi Core Mixed Speed
555 Pts 722 Pts Much faster multi-core speed.
+30%
SC Mixed
OC Single Core Mixed Speed
118 Pts 153 Pts Faster OC single-core speed.
+30%
QC Mixed
OC Quad Core Mixed Speed
433 Pts 562 Pts Faster OC quad-core speed.
+30%
MC Mixed
OC Multi Core Mixed Speed
599 Pts 815 Pts Much faster OC multi-core speed.
+36%
Market Share
Based on 12,818,692 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.91 % 2.02 % Hugely higher market share.
+122%
Value
Value For Money
72.5 % 89.4 % Better value.
+23%
User Rating
UBM User Rating
74 % 130 % Much more popular.
+76%
Price
Price (score)
$308 Slightly cheaper.
+12%
$350
Age
Newest
55 Months 23 Months Much more recent.
+58%
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 148 Pts Faster single-core int speed.
+26%
SC Float
Single Core Floating Point Speed
120 Pts 158 Pts Much faster single-core fp speed.
+32%
QC Int
Quad Core Integer Speed
426 Pts 537 Pts Faster quad-core int speed.
+26%
QC Float
Quad Core Floating Point Speed
435 Pts 577 Pts Much faster quad-core fp speed.
+33%
MC Int
Multi Core Integer Speed
568 Pts 746 Pts Much faster multi-core int speed.
+31%
MC Float
Multi Core Floating Point Speed
607 Pts 868 Pts Much faster multi-core fp speed.
+43%
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) December 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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