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 67,200 user samples
21,789 User Benchmarks
Best Bench: 126% Base clock 3.7 GHz, turbo 5 GHz (avg)
Worst Bench: 95% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 95% Great: 126%
SPEED RANK: 5th / 981
Gaming
Gaming 111%
UFO
Desktop
Desktop 107%
UFO
Workstation
Workstation 97%
Nuclear submarine
45,411 User Benchmarks
Best Bench: 112% Base clock 3.8 GHz, turbo 5.1 GHz (avg)
Worst Bench: 78% Base clock 3.8 GHz, turbo 0.8 GHz (avg)
Poor: 78% Great: 112%
SPEED RANK: 20th / 981
Gaming
Gaming 95%
Nuclear submarine
Desktop
Desktop 93%
Nuclear submarine
Workstation
Workstation 58%
Gunboat
Effective Speed
Effective CPU Speed
111 % Faster effective speed.
+16%
95.1 % -16%
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Slightly faster single-core speed.
+7%
131 Pts -7%
QC Mixed
Avg. Quad Core Mixed Speed
540 Pts Slightly faster quad-core speed.
+10%
493 Pts -10%
MC Mixed
Avg. Multi Core Mixed Speed
1101 Pts Hugely faster multi-core speed.
+118%
505 Pts -118%
SC Mixed
OC Single Core Mixed Speed
157 Pts +3% 152 Pts -3%
QC Mixed
OC Quad Core Mixed Speed
622 Pts Slightly faster OC quad-core speed.
+5%
590 Pts -5%
MC Mixed
OC Multi Core Mixed Speed
1259 Pts Hugely faster OC multi-core speed.
+114%
589 Pts -114%
Market Share
Based on 6,916,752 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.09 % Hugely higher market share.
+164%
1.17 % -164%
Value
Value For Money
100 % -7% 108 % Slightly better value.
+7%
User Rating
UBM User Rating
84 % -50% 126 % Much more popular.
+50%
Price
Price (score)
$379 -45% $210 Much cheaper.
+45%
Age
Newest
3 Months Much more recent.
+75%
12 Months -75%
TDP
Thermal Design Power (TDP)
95 Watts -4% 91 Watts +4%
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores -50%
Threads
CPU Processing Threads
12 threads Hugely higher thread count.
+200%
4 threads -200%
Lithography
Manufacturing process
14 nm 0% 14 nm 0%
Base Clock
Base Clock Speed
3.7 GHz -3% 3.8 GHz +3%
Turbo Clock
Turbo Clock Speed
4.7 GHz Slightly faster turbo frequency.
+12%
4.2 GHz -12%
SC Int
Single Core Integer Speed
154 Pts +4% 148 Pts -4%
SC Float
Single Core Floating Point Speed
160 Pts +3% 156 Pts -3%
QC Int
Quad Core Integer Speed
610 Pts Slightly faster quad-core int speed.
+7%
571 Pts -7%
QC Float
Quad Core Floating Point Speed
636 Pts +4% 613 Pts -4%
MC Int
Multi Core Integer Speed
1162 Pts Hugely faster multi-core int speed.
+102%
576 Pts -102%
MC Float
Multi Core Floating Point Speed
1333 Pts Hugely faster multi-core fp speed.
+116%
617 Pts -116%
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) January 2018 CPU Rankings.

Welcome to our desktop CPU comparison. We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by price to yield a value for money rating which is geared towards gamers. Calculated values don't always paint the whole picture so we check them against hundreds of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top CPUs. [CPUPro]

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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  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - 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.
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  • - Find the best upgrades.
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CPUGPUSSD
Intel Core i7-7700K $280Nvidia GTX 1070 $430Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $290Nvidia GTX 1060-6GB $275Samsung 850 Evo 500GB $140
Intel Core i5-7600K $210AMD RX 480 $400Samsung 850 Pro 256GB $110
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $52Corsair Vengeance LPX DDR4 3200 C16 2x8GB $220SanDisk Ultra Fit 32GB $12
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