IntelBX80677I77700K
IntelBX80662I76700K

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

Real World Speed
Performance profile from 94,761 user samples
6,705 User Benchmarks
Best Bench: 117% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 93% Base clock 4.2 GHz, turbo 1.75 GHz (avg)
Poor: 93% Great: 117%
SPEED RANK: 3rd / 948
Gaming
Gaming 106%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 76%
Battleship
88,056 User Benchmarks
Best Bench: 112% Base clock 4 GHz, turbo 4.9 GHz (avg)
Worst Bench: 86% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 86% Great: 112%
SPEED RANK: 7th / 948
Gaming
Gaming 98%
Nuclear submarine
Desktop
Desktop 98%
Nuclear submarine
Workstation
Workstation 71%
Battleship
Effective Speed
Effective CPU Speed
106 % Slightly faster effective speed.
+8%
98.2 % -8%
SC Mixed
Avg. Single Core Mixed Speed
139 Pts Slightly faster single-core speed.
+7%
130 Pts -7%
QC Mixed
Avg. Quad Core Mixed Speed
493 Pts Slightly faster quad-core speed.
+8%
457 Pts -8%
MC Mixed
Avg. Multi Core Mixed Speed
749 Pts Slightly faster multi-core speed.
+8%
693 Pts -8%
SC Mixed
OC Single Core Mixed Speed
153 Pts Slightly faster OC single-core speed.
+6%
145 Pts -6%
QC Mixed
OC Quad Core Mixed Speed
563 Pts +5% 538 Pts -5%
MC Mixed
OC Multi Core Mixed Speed
829 Pts Slightly faster OC multi-core speed.
+6%
781 Pts -6%
Market Share
Based on 2,927,222 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.2 % -28% 4.1 % Higher market share.
+28%
Value
Value For Money
103 % Slightly better value.
+6%
97.2 % -6%
User Rating
UBM User Rating
101 % Slightly more popular.
+10%
92 % -10%
Price
Price (score)
$310 -3% $300 +3%
Age
Newest
1 Months Hugely more recent.
+94%
18 Months -94%
TDP
Thermal Design Power (TDP)
91 Watts 0% 91 Watts 0%
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 0% 14 nm 0%
Base Clock
Base Clock Speed
4.2 GHz +5% 4 GHz -5%
Turbo Clock
Turbo Clock Speed
4.5 GHz Slightly faster turbo frequency.
+7%
4.2 GHz -7%
SC Int
Single Core Integer Speed
149 Pts Slightly faster single-core int speed.
+6%
141 Pts -6%
SC Float
Single Core Floating Point Speed
157 Pts Slightly faster single-core fp speed.
+5%
149 Pts -5%
QC Int
Quad Core Integer Speed
551 Pts Slightly faster quad-core int speed.
+5%
524 Pts -5%
QC Float
Quad Core Floating Point Speed
582 Pts Slightly faster quad-core fp speed.
+5%
553 Pts -5%
MC Int
Multi Core Integer Speed
768 Pts Slightly faster multi-core int speed.
+6%
723 Pts -6%
MC Float
Multi Core Floating Point Speed
869 Pts Slightly faster multi-core fp speed.
+6%
818 Pts -6%
Series
CPU Architecture
Kaby Lake (2017) Skylake (2015)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 630 HD 530
Launch Date
Launch Date
Q1'17 Q3'15
Cache
Cache
8 MB 8 MB SmartCache
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD Graphics 530
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz

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 architecture is due for release later this year so things could change at that time. [Jan '17 CPUPro]

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The Core i7-6700K is Intel's latest "Skylake" flagship processor. It replaces the hugely successful i7-4790K and takes the crown as the fastest mainstream consumer CPU available. Comparing performance and specs between the 4790K and 6700K shows that the configuration is largely unchanged (same base clocks, cores, threads) but the improved manufacturing process (14nm) brings a small reduction in TDP and a performance improvement of 8%; almost exactly the same jump as between the Ivy Bridge 3770K and Haswell 4770K. Owners of any unlocked-K Intel CPU from Sandy Bridge or onwards still have no real reason to upgrade as the performance improvements are largely academic but the i7-6700K will be the CPU of choice for the vast majority of top end PC builds in 2015. [Aug '15 CPUPro]

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Processor Rankings (Price vs Performance) February 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.

 Frequently Asked Questions

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CPUGPUSSD
AMD Ryzen 7 1700X $399Nvidia GTX 1070 $370Samsung 850 Evo 250GB $94
Intel Core i7-7700K $310AMD RX 480 $177Samsung 850 Pro 256GB $121
Intel Core i5-7600K $240Nvidia GTX 1060-6GB $235Samsung 850 Evo 500GB $164
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $125SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $90HyperX Fury DDR4 2133 C14 2x8GB $120SanDisk Extreme 32GB $26
Seagate Barracuda 7200.14 1TB $42G.SKILL Trident Z DDR4 3200 C14 4x16GB $650SanDisk Ultra Fit 32GB $9
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