IntelBX80684I78700K
IntelBX80677I57600K

6 Cores, 12 Threads
@3.7GHz Coffee Lake (2017)

4 Cores, 4 Threads
@3.8GHz Kaby Lake (2017)

Real World Speed
Performance profile from 147,243 user samples
86,077 User Benchmarks
Best Bench: 127% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 95% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 95% Great: 127%
SPEED RANK: 7th / 1110
Gaming
Gaming 111%
UFO
Desktop
Desktop 107%
UFO
Workstation
Workstation 97%
Nuclear submarine
61,166 User Benchmarks
Best Bench: 111% Base clock 3.8 GHz, turbo 4.95 GHz (avg)
Worst Bench: 76% Base clock 3.8 GHz, turbo 1.5 GHz (avg)
Poor: 76% Great: 111%
SPEED RANK: 26th / 1110
Gaming
Gaming 94%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 57%
Gunboat
Effective Speed
Effective CPU Speed
111 % Faster effective speed.
+17%
94.2 %
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Slightly faster single-core speed.
+8%
130 Pts
QC Mixed
Avg. Quad Core Mixed Speed
539 Pts Slightly faster quad-core speed.
+10%
488 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1094 Pts Hugely faster multi-core speed.
+120%
498 Pts
SC Mixed
OC Single Core Mixed Speed
157 Pts +4% 151 Pts
QC Mixed
OC Quad Core Mixed Speed
625 Pts Slightly faster OC quad-core speed.
+7%
582 Pts
MC Mixed
OC Multi Core Mixed Speed
1265 Pts Hugely faster OC multi-core speed.
+117%
584 Pts
Market Share
Based on 9,308,324 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.34 % Hugely higher market share.
+307%
0.82 %
Value
Value For Money
107 % 109 % +2%
User Rating
UBM User Rating
138 % Much more popular.
+64%
84 %
Price
Price (score)
$320 $200 Much cheaper.
+38%
Age
Newest
8 Months Much more recent.
+53%
17 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 3.8 GHz +3%
Turbo Clock
Turbo Clock Speed
4.7 GHz Slightly faster turbo frequency.
+12%
4.2 GHz
SC Int
Single Core Integer Speed
155 Pts Slightly faster single-core int speed.
+5%
147 Pts
SC Float
Single Core Floating Point Speed
160 Pts +3% 156 Pts
QC Int
Quad Core Integer Speed
614 Pts Slightly faster quad-core int speed.
+9%
563 Pts
QC Float
Quad Core Floating Point Speed
638 Pts +5% 609 Pts
MC Int
Multi Core Integer Speed
1167 Pts Hugely faster multi-core int speed.
+106%
567 Pts
MC Float
Multi Core Floating Point Speed
1335 Pts Hugely faster multi-core fp speed.
+118%
612 Pts
Series
CPU Architecture
Coffee Lake (2017) Kaby Lake (2017)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 HD 630
Launch Date
Launch Date
Q4'17 Q1'17
Cache
Cache
12 MB 6 MB
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
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-2666 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350 MHz 350.00 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.15 GHz
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
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 i5-7600K targets high end gamers, it sits just behind the flagship i7-7700K in Intel’s Kaby Lake lineup. The 7600K will likely be the most popular gaming CPU of 2017 (some competition from AMD’s upcoming Zen/Ryzen CPUs, would be very welcome). Comparing the 7600K and 6600K shows that the two processors are very closely matched and comparing the 7600K vs the hyper-threaded 7700K highlights the relative strength of the 7700K for workstation performance. There are no significant architectural differences between Kaby Lake and Skylake so, when fully overclocked, the two generations should perform similarly but Kaby Lake offers faster base clocks, improved speed shift technology which helps CPU responsiveness, and better integrated graphics[Jan '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) June 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.
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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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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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 Frequently Asked Questions

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CPUGPUSSD
AMD Ryzen 5 1600 $175Nvidia GTX 1070 $447Samsung 850 Evo 250GB $104
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $270Samsung 850 Evo 500GB $117
Intel Core i5-8600K $239AMD RX 480 $280Samsung 850 Pro 256GB $116
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $58HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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