IntelBX80684I78700K
IntelBX80662I56500

6 Cores, 12 Threads @3.7GHz, Coffee Lake.
Release date: Q4 2017.

4 Cores, 4 Threads @3.2GHz, Skylake.
Release date: Q3 2015.

Real World Speed
Performance profile from 345,249 user samples
251,110 User Benchmarks
Best Bench: 124% Base clock 3.7 GHz, turbo 5.05 GHz (avg)
Worst Bench: 91% Base clock 3.7 GHz, turbo 5 GHz (avg)
Poor: 91% Great: 124%
SPEED RANK: 21st / 1146
Gaming
Gaming 107%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 94%
Nuclear submarine
94,139 User Benchmarks
Best Bench: 78% Base clock 3.1 GHz, turbo 3.2 GHz (avg)
Worst Bench: 54% Base clock 3.2 GHz, turbo 2.5 GHz (avg)
Poor: 54% Great: 78%
SPEED RANK: 148th / 1146
Gaming
Gaming 70%
Battle cruiser
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 42%
Speed boat
Effective Speed
Effective CPU Speed
107 % Much faster effective speed.
+54%
69.8 %
SC Mixed
Avg. Single Core Mixed Speed
137 Pts Much faster single-core speed.
+40%
97.6 Pts
QC Mixed
Avg. Quad Core Mixed Speed
522 Pts Much faster quad-core speed.
+45%
360 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1065 Pts Hugely faster multi-core speed.
+189%
369 Pts
SC Mixed
OC Single Core Mixed Speed
154 Pts Much faster OC single-core speed.
+40%
110 Pts
QC Mixed
OC Quad Core Mixed Speed
613 Pts Much faster OC quad-core speed.
+50%
408 Pts
MC Mixed
OC Multi Core Mixed Speed
1228 Pts Hugely faster OC multi-core speed.
+200%
409 Pts
Market Share
Based on 14,838,267 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.92 % Hugely higher market share.
+248%
0.84 %
Value
Value For Money
99.3 % Better value.
+26%
78.8 %
User Rating
UBM User Rating
160 % Hugely more popular.
+139%
67 %
Price
Price (score)
$360 $211 Much cheaper.
+41%
Age
Newest
16 Months Much more recent.
+61%
41 Months
TDP
Thermal Design Power (TDP)
95 Watts 65 Watts Much more energy efficient.
+32%
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 Faster base frequency.
+16%
3.2 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Much faster turbo frequency.
+31%
3.6 GHz
SC Int
Single Core Integer Speed
150 Pts Much faster single-core int speed.
+43%
105 Pts
SC Float
Single Core Floating Point Speed
159 Pts Much faster single-core fp speed.
+38%
115 Pts
QC Int
Quad Core Integer Speed
592 Pts Much faster quad-core int speed.
+50%
394 Pts
QC Float
Quad Core Floating Point Speed
634 Pts Much faster quad-core fp speed.
+48%
427 Pts
MC Int
Multi Core Integer Speed
1113 Pts Hugely faster multi-core int speed.
+181%
396 Pts
MC Float
Multi Core Floating Point Speed
1313 Pts Hugely faster multi-core fp speed.
+207%
428 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
Embedded Options Available
Embedded Options Available
No Yes
Recommended Price
Recommended Customer Price
N/A $192.00 - $202.00
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015C (65W)
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 1.05 GHz
Hyper-Threading Tech
Intel® Hyper-Threading 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

Processor Rankings (Price vs Performance) February 2019 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.
  • 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.
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 Frequently Asked Questions

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CPUGPUSSD
Intel Core i7-8700K $360Nvidia GTX 1070 $325Samsung 850 Evo 250GB $78
AMD Ryzen 5 1600 $148Nvidia GTX 1060-6GB $220Samsung 850 Evo 500GB $80
Intel Core i5-8600K $259Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $110SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $750SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $120SanDisk Ultra Fit 32GB $12
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