IntelBX80677I77700K
IntelBX80662I76700K

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

4 Cores, 8 Threads @4.0GHz, Skylake.
Release date: Q3 2015.

Real World Speed
Performance profile from 874,258 user samples
432,219 User Benchmarks
Best Bench: 98% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 77% Base clock 4.2 GHz, turbo 4.35 GHz (avg)
Poor: 77% Great: 98%
SPEED RANK: 45th / 1265
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 93%
Nuclear submarine
Workstation
Workstation 74%
Battleship
442,039 User Benchmarks
Best Bench: 94% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 73% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 73% Great: 94%
SPEED RANK: 84th / 1265
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 70%
Battleship
Effective Speed
Effective CPU Speed
88.3 % +5% 84.5 %
Memory
Avg. Memory Latency
91.8 Pts +1% 90.5 Pts
1-Core
Avg. Single Core Mixed Speed
135 Pts Slightly faster single-core speed.
+9%
124 Pts
2-Core
Avg. Dual Core Mixed Speed
259 Pts Slightly faster dual-core speed.
+8%
239 Pts
4-Core
Avg. Quad Core Mixed Speed
458 Pts Slightly faster quad-core speed.
+8%
425 Pts
8-Core
Avg. Octa Core Mixed Speed
686 Pts Slightly faster octa-core speed.
+8%
635 Pts
Memory
OC Memory Latency
97.2 Pts +0% 96.9 Pts
1-Core
OC Single Core Mixed Speed
151 Pts Slightly faster OC single-core speed.
+7%
141 Pts
2-Core
OC Dual Core Mixed Speed
294 Pts Slightly faster OC dual-core speed.
+6%
278 Pts
4-Core
OC Quad Core Mixed Speed
545 Pts Slightly faster OC quad-core speed.
+7%
510 Pts
8-Core
OC Octa Core Mixed Speed
778 Pts +4% 745 Pts
Market Share
Based on 33,636,312 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.29 % +1% 1.28 %
Value
Value For Money
81.1 % 84.7 % +4%
User Rating
UBM User Rating
153 % More popular.
+11%
138 %
Price
Price (score)
$379 $276 Cheaper.
+27%
Age
Newest
45 Months More recent.
+27%
62 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
64-Core
OC Multi Core Mixed Speed
785 Pts Slightly faster OC 64-core speed.
+5%
745 Pts
64-Core
Avg. Multi Core Mixed Speed
695 Pts Slightly faster 64-core speed.
+8%
644 Pts
Series
CPU Architecture
Kaby Lake Skylake
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
Max Turbo Frequency
Max Turbo Frequency
4.50 GHz 4.2 GHz
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) October 2020 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. 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.
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.

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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

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