IntelBX80677I77700K
IntelBX80662I76700K

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

4 Cores, 8 Threads
@4.0GHz Skylake (2015)

Real World Speed
Performance profile from 360,925 user samples
156,048 User Benchmarks
Best Bench: 113% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 87% Base clock 4.2 GHz, turbo 1.7 GHz (avg)
Poor: 87% Great: 113%
SPEED RANK: 18th / 1100
Gaming
Gaming 100%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
204,877 User Benchmarks
Best Bench: 105% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 76% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 76% Great: 105%
SPEED RANK: 32nd / 1100
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 67%
Battle cruiser
Effective Speed
Effective CPU Speed
99.7 % Slightly faster effective speed.
+10%
90.6 %
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Slightly faster single-core speed.
+9%
128 Pts
QC Mixed
Avg. Quad Core Mixed Speed
489 Pts Slightly faster quad-core speed.
+11%
442 Pts
MC Mixed
Avg. Multi Core Mixed Speed
741 Pts Slightly faster multi-core speed.
+9%
679 Pts
SC Mixed
OC Single Core Mixed Speed
155 Pts Slightly faster OC single-core speed.
+8%
144 Pts
QC Mixed
OC Quad Core Mixed Speed
566 Pts Slightly faster OC quad-core speed.
+7%
527 Pts
MC Mixed
OC Multi Core Mixed Speed
826 Pts Slightly faster OC multi-core speed.
+7%
771 Pts
Market Share
Based on 8,450,868 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.46 % Much higher market share.
+42%
1.73 %
Value
Value For Money
99.9 % Better value.
+19%
83.8 %
User Rating
UBM User Rating
135 % Much more popular.
+48%
91 %
Price
Price (score)
$290 Cheaper.
+19%
$359
Age
Newest
15 Months Much more recent.
+53%
32 Months
TDP
Thermal Design Power (TDP)
91 Watts 91 Watts
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4.2 GHz +5% 4 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Slightly faster turbo frequency.
+7%
4.2 GHz
SC Int
Single Core Integer Speed
152 Pts Slightly faster single-core int speed.
+7%
142 Pts
SC Float
Single Core Floating Point Speed
159 Pts Slightly faster single-core fp speed.
+8%
147 Pts
QC Int
Quad Core Integer Speed
548 Pts Slightly faster quad-core int speed.
+6%
516 Pts
QC Float
Quad Core Floating Point Speed
581 Pts Slightly faster quad-core fp speed.
+6%
547 Pts
MC Int
Multi Core Integer Speed
761 Pts Slightly faster multi-core int speed.
+7%
710 Pts
MC Float
Multi Core Floating Point Speed
873 Pts Slightly faster multi-core fp speed.
+7%
813 Pts
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 will 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) April 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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 i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $90
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $300Samsung 850 Evo 500GB $137
AMD Ryzen 5 1600 $170AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $193SanDisk Ultra Fit 32GB $12
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