IntelBX80684I78700K
IntelBX80662I56600K
Real World Speed
Performance profile from 710,098 user samples
465,919 User Benchmarks
Best Bench: 104% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 84% Base clock 3.7 GHz, turbo 1.45 GHz (avg)
Poor: 84% Great: 104%
SPEED RANK: 23rd / 1256
Gaming
Gaming 94%
Nuclear submarine
Desktop
Desktop 96%
Nuclear submarine
Workstation
Workstation 85%
Aircraft carrier
244,179 User Benchmarks
Best Bench: 94% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 66% Base clock 3.5 GHz, turbo 4.25 GHz (avg)
Poor: 66% Great: 94%
SPEED RANK: 114th / 1256
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 62%
Destroyer
Effective Speed
Effective CPU Speed
94.4 % Faster effective speed.
+16%
81.4 %
Memory
Avg. Memory Latency
93.6 Pts Slightly lower memory latency.
+6%
88.6 Pts
1-Core
Avg. Single Core Mixed Speed
136 Pts Faster single-core speed.
+16%
117 Pts
2-Core
Avg. Dual Core Mixed Speed
266 Pts Faster dual-core speed.
+15%
231 Pts
4-Core
Avg. Quad Core Mixed Speed
512 Pts Faster quad-core speed.
+19%
429 Pts
8-Core
Avg. Octa Core Mixed Speed
831 Pts Hugely faster octa-core speed.
+91%
434 Pts
Memory
OC Memory Latency
97.8 Pts +1% 96.7 Pts
1-Core
OC Single Core Mixed Speed
154 Pts Slightly faster OC single-core speed.
+9%
141 Pts
2-Core
OC Dual Core Mixed Speed
303 Pts Slightly faster OC dual-core speed.
+9%
279 Pts
4-Core
OC Quad Core Mixed Speed
597 Pts Faster OC quad-core speed.
+11%
538 Pts
8-Core
OC Octa Core Mixed Speed
963 Pts Much faster OC octa-core speed.
+79%
538 Pts
Market Share
Based on 30,626,023 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.32 % Hugely higher market share.
+100%
0.66 %
Value
Value For Money
88.6 % 89.7 % +1%
User Rating
UBM User Rating
174 % Much more popular.
+45%
120 %
Price
Price (score)
$350 $195 Much cheaper.
+44%
Age
Newest
33 Months Much more recent.
+44%
59 Months
TDP
Thermal Design Power (TDP)
95 Watts 91 Watts +4%
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
12 threads Hugely higher thread count.
+200%
4 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.7 GHz Slightly faster base frequency.
+6%
3.5 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Faster turbo frequency.
+21%
3.9 GHz
64-Core
OC Multi Core Mixed Speed
1195 Pts Hugely faster OC 64-core speed.
+121%
541 Pts
64-Core
Avg. Multi Core Mixed Speed
1034 Pts Hugely faster 64-core speed.
+136%
439 Pts
Series
CPU Architecture
Coffee Lake Skylake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 HD 530
Launch Date
Launch Date
Q4'17 Q3'15
Cache
Cache
12 MB 6 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX 2.0
Recommended Price
Recommended Customer Price
N/A $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency
4.70 GHz 3.9 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015D (130W)
Memory Types
Memory Types
DDR4-2666 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 530
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.15 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16 or 2x8 or 1x8+2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
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The i7-8700K is Intel’s latest, top of the range, 8th generation Coffee Lake processor. Like Kaby Lake and Sky Lake before that, Coffee Lake is based on Intel’s 14nm architecture which has been slightly optimized on each iteration. Following AMD’s modus operandi, Intel has upped the cores and threads across the range of their CPUs. In previous generations, a 6-core processor would have been a high-end desk-top (HEDT) processor, however the i7-8700K is the first Intel CPU with 6 cores and 12 threads to be classified (and priced) as a mainstream consumer processor. Specifically, the i7-8700K features a base clock speed of 3.7 GHz which boosts to 4.7 GHz (4.5 GHz for the previous generation i7-7700k), 12MB of smart (L3) cache and 2 channels of DDR4 RAM. The majority of the performance improvements over the 7th generation stem from the higher core count which results in a 50% increase in multi-core speed between the i7-7700k and i7-8700k. A new motherboard will need to be factored into the budget when upgrading to the 8700K as it requires a new Intel Z370 chipset which has supposedly been designed to better deliver power to CPUs with a greater number of cores. Also available in this latest release of CPUs is the 6 core 6 thread i5-8600k which is a more rational option (around $100 cheaper) for the vast majority of users that don’t require hyper-threading. Sandy bridge owners can finally justify an upgrade but with the next iteration of AMD's Zen architecture just around the corner the CPU market will be a lot faster moving now that Intel, once again, has to compete. [Sep '17 CPUPro]

MORE DETAILS

The Intel Core i5-6600K is based on the new "Skylake" 14nm manufacturing process. Sporting 4 physical cores with base/turbo clocks of 3.5/3.9 GHz the 6600K and its predecessor, the 4690K share the same basic configuration and disappointingly, offer similar performance. Comparing the 6600K and 6700K shows that the 6700K has faster multi and single core performance. The improved multi core performance is due to Hyperthreading which is the key differentiator for the i7-6700K. The gap in single core performance can largely be eliminated by overclocking the i5-6600K so although the stock effective speed is significantly higher on the 6700K, this gap diminishes significantly when both processors are overclocked. At a 30% discount, the 6600K is the better value gaming CPU. [Aug '15 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) July 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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CPUGPUSSD
Intel Core i5-9600K $190Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $47
Intel Core i5-9400F $150Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $349Nvidia RTX 2070S (Super) $510Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $67SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
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