IntelBX80677I77700K
IntelBX80646I74790

4 Cores, 8 Threads
@4.2GHz Kaby Lake (2017)

Real World Speed
Performance profile from 69,626 user samples
39,912 User Benchmarks
Best Bench: 111% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 89% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 89% Great: 111%
SPEED RANK: 4th / 961
Gaming
Gaming 100%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 74%
Battleship
29,714 User Benchmarks
Best Bench: 85% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 68% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 68% Great: 85%
SPEED RANK: 42nd / 961
Gaming
Gaming 77%
Battleship
Desktop
Desktop 78%
Battleship
Workstation
Workstation 57%
Gunboat
Effective Speed
Effective CPU Speed
99.8 % Faster effective speed.
+30%
77 % -30%
SC Mixed
Avg. Single Core Mixed Speed
139 Pts Faster single-core speed.
+29%
108 Pts -29%
QC Mixed
Avg. Quad Core Mixed Speed
491 Pts Faster quad-core speed.
+30%
378 Pts -30%
MC Mixed
Avg. Multi Core Mixed Speed
745 Pts Much faster multi-core speed.
+31%
570 Pts -31%
SC Mixed
OC Single Core Mixed Speed
153 Pts Much faster OC single-core speed.
+32%
116 Pts -32%
QC Mixed
OC Quad Core Mixed Speed
560 Pts Faster OC quad-core speed.
+29%
433 Pts -29%
MC Mixed
OC Multi Core Mixed Speed
826 Pts Much faster OC multi-core speed.
+38%
599 Pts -38%
Market Share
Based on 4,073,765 CPUs tested.
Market Share
Market Share (trailing 30 days)
5.94 % Hugely higher market share.
+774%
0.68 % -774%
Value
Value For Money
97.7 % Better value.
+29%
75.7 % -29%
User Rating
UBM User Rating
140 % Hugely more popular.
+87%
75 % -87%
Price
Price (score)
$309 -1% $305 +1%
Age
Newest
5 Months Hugely more recent.
+86%
37 Months -86%
TDP
Thermal Design Power (TDP)
91 Watts -8% 84 Watts Slightly more energy efficient.
+8%
Cores
CPU Processing Cores
4 cores 0% 4 cores 0%
Threads
CPU Processing Threads
8 threads 0% 8 threads 0%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm -36%
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+17%
3.6 GHz -17%
Turbo Clock
Turbo Clock Speed
4.5 GHz Slightly faster turbo frequency.
+12%
4 GHz -12%
SC Int
Single Core Integer Speed
150 Pts Faster single-core int speed.
+27%
118 Pts -27%
SC Float
Single Core Floating Point Speed
158 Pts Much faster single-core fp speed.
+32%
120 Pts -32%
QC Int
Quad Core Integer Speed
548 Pts Faster quad-core int speed.
+23%
444 Pts -23%
QC Float
Quad Core Floating Point Speed
583 Pts Much faster quad-core fp speed.
+32%
443 Pts -32%
MC Int
Multi Core Integer Speed
765 Pts Much faster multi-core int speed.
+34%
571 Pts -34%
MC Float
Multi Core Floating Point Speed
877 Pts Much faster multi-core fp speed.
+45%
605 Pts -45%
Series
CPU Architecture
Kaby Lake (2017) Haswell (2013)
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 630 HD 4600
Launch Date
Launch Date
Q1'17 Q2'14
Cache
Cache
8 MB 8 MB SmartCache
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $303.00 - $312.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2013D
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD Graphics 4600
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.2 GHz
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 2 GB
TSX-NI
Intel® TSX-NI
Yes No
vPro Tech
Intel® vPro Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
PCI Express Revision
PCI Express Revision
3.0 Up to 3.0

More specs » More specs »
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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]

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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]

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Processor Rankings (Price vs Performance) June 2017 CPU Rankings.

Welcome to our desktop CPU comparison. We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by price to yield a value for money rating which is geared towards gamers. Calculated values don't always paint the whole picture so we check them against hundreds of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top CPUs. [CPUPro]

How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

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CPUGPUSSD
Intel Core i7-7700K $309Nvidia GTX 1070 $390Samsung 850 Evo 250GB $90
Intel Core i5-7600K $231AMD RX 480 $608Samsung 850 Pro 256GB $135
AMD Ryzen 7 1700 $280Nvidia GTX 1060-6GB $248Samsung 850 Evo 500GB $167
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $696SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $40HyperX Fury DDR4 2133 C14 2x8GB $133SanDisk Ultra Fit 32GB $13
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