IntelBX80662I76700K
IntelBX80684I58600K

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

6 Cores, 6 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 824,724 user samples
572,193 User Benchmarks
Best Bench: 94% Base clock 4 GHz, turbo 4.6 GHz (avg)
Worst Bench: 67% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 67% Great: 94%
SPEED RANK: 115th / 1316
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 69%
Battle cruiser
252,531 User Benchmarks
Best Bench: 103% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 82% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 82% Great: 103%
SPEED RANK: 47th / 1316
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 93%
Nuclear submarine
Workstation
Workstation 77%
Battleship
Effective Speed
Effective CPU Speed
82.8 % 92.6 % Faster effective speed.
+12%
Memory
Avg. Memory Latency
88.7 Pts 91.5 Pts +3%
1-Core
Avg. Single Core Mixed Speed
122 Pts 131 Pts Slightly faster single-core speed.
+7%
2-Core
Avg. Dual Core Mixed Speed
234 Pts 259 Pts Faster dual-core speed.
+11%
4-Core
Avg. Quad Core Mixed Speed
415 Pts 508 Pts Faster quad-core speed.
+22%
8-Core
Avg. Octa Core Mixed Speed
623 Pts 722 Pts Faster octa-core speed.
+16%
Memory
OC Memory Latency
96.3 Pts 96.8 Pts +1%
1-Core
OC Single Core Mixed Speed
140 Pts 153 Pts Slightly faster OC single-core speed.
+9%
2-Core
OC Dual Core Mixed Speed
273 Pts 303 Pts Faster OC dual-core speed.
+11%
4-Core
OC Quad Core Mixed Speed
504 Pts 595 Pts Faster OC quad-core speed.
+18%
8-Core
OC Octa Core Mixed Speed
738 Pts 871 Pts Faster OC octa-core speed.
+18%
Market Share
Based on 46,420,538 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.92 % Hugely higher market share.
+142%
0.38 %
Value
Value For Money
81 % 97 % Better value.
+20%
User Rating
UBM User Rating
77 % 77 %
Price
Price (score)
$301 $235 Cheaper.
+22%
Age
Newest
73 Months 47 Months Much more recent.
+36%
TDP
Thermal Design Power (TDP)
91 Watts +4% 95 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads Much higher thread count.
+33%
6 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4 GHz Faster base frequency.
+11%
3.6 GHz
Turbo Clock
Turbo Clock Speed
4.2 GHz 4.3 GHz +2%
64-Core
OC Multi Core Mixed Speed
739 Pts 870 Pts Faster OC 64-core speed.
+18%
64-Core
Avg. Multi Core Mixed Speed
630 Pts 729 Pts Faster 64-core speed.
+16%
Series
CPU Architecture
Skylake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 530 UHD 630
Launch Date
Launch Date
Q3'15 Q4'17
Cache
Cache
8 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Max Turbo Frequency
Max Turbo Frequency
4.2 GHz 4.30 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (130W)
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® UHD Graphics 630
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
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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]

MORE DETAILS

The unlocked hex-core i5-8600K from Intel’s latest Coffee Lake generation of processors is the new flagship of the i5 series, succeeding the Kaby Lake quad-core i5-7600K. The 8th generation of processors brings the largest performance uplift since Sandy Bridge by adding more cores at each of the i3, i5 and i7 product lines. Like the other Coffee Lake processors, the i5-8600K is built upon optimized 14nm architecture, marginally improved upon from Kaby Lake and Skylake. The 8600K has a 95W TDP and a nominal stock clock of 3.6 GHz, which boosts to 4.1 GHz for all six cores, 4.2 GHz for dual/quad and 4.3 GHz for single core. Early benchmarks put the i5-8600K’s effective speed 15% ahead of the i5-7600K. A 50% increase in multi-core speed is explained by two additional cores and thanks to the quad-core clock bump from 4 GHz on the 7600K to 4.2 GHz on the 8600K there is also an additional 5% performance boost across all workloads. All Coffee Lake processors require a 300-series chipset, making a straight CPU upgrade unfeasible despite sharing the same socket as their Z270 predecessors. Even though most games still use less than 4 cores simultaneously, the i5-8600K is a great choice for gamers but for $80 less, the 8350K which is faster than last years 7600K and only marginally weaker for gaming than the 8600K is certainly well worth considering as well. [Oct '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) September 2021 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.

UserBenchmark of the month

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.

 Frequently Asked Questions

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The Best.
CPUGPUSSD
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 850 Evo 120GB $183
Intel Core i7-11700K $346Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $28Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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