IntelBX80677I77700K
IntelBX80662I36100

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

2 Cores, 4 Threads
@3.7GHz Skylake (2015)

Real World Speed
Performance profile from 82,757 user samples
60,271 User Benchmarks
Best Bench: 112% Base clock 4.2 GHz, turbo 5.15 GHz (avg)
Worst Bench: 89% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 89% Great: 112%
SPEED RANK: 6th / 968
Gaming
Gaming 100%
UFO
Desktop
Desktop 100%
UFO
Workstation
Workstation 74%
Battleship
22,486 User Benchmarks
Best Bench: 67% Base clock 3.7 GHz, turbo 3.7 GHz (avg)
Worst Bench: 47% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 47% Great: 67%
SPEED RANK: 159th / 968
Gaming
Gaming 62%
Destroyer
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 37%
Jet ski
Effective Speed
Effective CPU Speed
100 % Much faster effective speed.
+62%
62 % -62%
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Much faster single-core speed.
+31%
107 Pts -31%
QC Mixed
Avg. Quad Core Mixed Speed
493 Pts Much faster quad-core speed.
+72%
287 Pts -72%
MC Mixed
Avg. Multi Core Mixed Speed
745 Pts Hugely faster multi-core speed.
+153%
295 Pts -153%
SC Mixed
OC Single Core Mixed Speed
155 Pts Much faster OC single-core speed.
+35%
115 Pts -35%
QC Mixed
OC Quad Core Mixed Speed
565 Pts Much faster OC quad-core speed.
+80%
314 Pts -80%
MC Mixed
OC Multi Core Mixed Speed
825 Pts Hugely faster OC multi-core speed.
+161%
316 Pts -161%
Market Share
Based on 4,697,666 CPUs tested.
Market Share
Market Share (trailing 30 days)
4.25 % Hugely higher market share.
+620%
0.59 % -620%
Value
Value For Money
99.2 % Slightly better value.
+12%
88.8 % -12%
User Rating
UBM User Rating
150 % Hugely more popular.
+92%
78 % -92%
Price
Price (score)
$300 -63% $112 Much cheaper.
+63%
Age
Newest
7 Months Much more recent.
+68%
22 Months -68%
TDP
Thermal Design Power (TDP)
91 Watts -48% 47 Watts Much more energy efficient.
+48%
Cores
CPU Processing Cores
4 cores Hugely higher core count.
+100%
2 cores -100%
Threads
CPU Processing Threads
8 threads Hugely higher thread count.
+100%
4 threads -100%
Lithography
Manufacturing process
14 nm 0% 14 nm 0%
Base Clock
Base Clock Speed
4.2 GHz Slightly faster base frequency.
+14%
3.7 GHz -14%
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+22%
3.7 GHz -22%
SC Int
Single Core Integer Speed
150 Pts Much faster single-core int speed.
+33%
113 Pts -33%
SC Float
Single Core Floating Point Speed
159 Pts Much faster single-core fp speed.
+35%
118 Pts -35%
QC Int
Quad Core Integer Speed
548 Pts Hugely faster quad-core int speed.
+88%
291 Pts -88%
QC Float
Quad Core Floating Point Speed
586 Pts Much faster quad-core fp speed.
+78%
329 Pts -78%
MC Int
Multi Core Integer Speed
765 Pts Hugely faster multi-core int speed.
+163%
291 Pts -163%
MC Float
Multi Core Floating Point Speed
872 Pts Hugely faster multi-core fp speed.
+164%
330 Pts -164%
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 3 MB SmartCache
Embedded Options Available
Embedded Options Available
No Yes
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $117.00
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
ECC Memory Supported
ECC Memory Supported ‡
No Yes
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD Graphics 530
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.05 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
TSX-NI
Intel® TSX-NI
Yes No

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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Processor Rankings (Price vs Performance) August 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
Intel Core i7-7700K $300Nvidia GTX 1070 $410Samsung 850 Evo 250GB $99
AMD Ryzen 7 1700 $280AMD RX 480 $390Samsung 850 Pro 256GB $133
Intel Core i5-7600K $212Nvidia GTX 1060-6GB $271Samsung 850 Evo 500GB $165
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $718SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $83Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $55HyperX Fury DDR4 2133 C14 2x8GB $140SanDisk Ultra Fit 32GB $13
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