IntelBX80684I78700K
IntelBX80677I77700

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

4 Cores, 8 Threads
@3.6GHz Kaby Lake (2017)

Real World Speed
Performance profile from 146,872 user samples
102,894 User Benchmarks
Best Bench: 125% Base clock 3.7 GHz, turbo 5.3 GHz (avg)
Worst Bench: 94% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 94% Great: 125%
SPEED RANK: 7th / 1117
Gaming
Gaming 109%
UFO
Desktop
Desktop 106%
UFO
Workstation
Workstation 96%
Nuclear submarine
43,978 User Benchmarks
Best Bench: 95% Base clock 3.6 GHz
Worst Bench: 73% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 73% Great: 95%
SPEED RANK: 48th / 1117
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 63%
Destroyer
Effective Speed
Effective CPU Speed
109 % Faster effective speed.
+29%
84.1 %
SC Mixed
Avg. Single Core Mixed Speed
138 Pts Faster single-core speed.
+16%
119 Pts
QC Mixed
Avg. Quad Core Mixed Speed
527 Pts Faster quad-core speed.
+29%
409 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1093 Pts Much faster multi-core speed.
+71%
640 Pts
SC Mixed
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+21%
128 Pts
QC Mixed
OC Quad Core Mixed Speed
616 Pts Faster OC quad-core speed.
+28%
483 Pts
MC Mixed
OC Multi Core Mixed Speed
1255 Pts Hugely faster OC multi-core speed.
+86%
675 Pts
Market Share
Based on 9,740,167 CPUs tested.
Market Share
Market Share (trailing 30 days)
4.09 % Hugely higher market share.
+309%
1 %
Value
Value For Money
105 % Better value.
+27%
82.8 %
User Rating
UBM User Rating
148 % Hugely more popular.
+128%
65 %
Price
Price (score)
$320 $304 Slightly cheaper.
+5%
Age
Newest
9 Months Much more recent.
+50%
18 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 Much higher thread count.
+50%
8 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.7 GHz +3% 3.6 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Slightly faster turbo frequency.
+12%
4.2 GHz
SC Int
Single Core Integer Speed
151 Pts Faster single-core int speed.
+21%
125 Pts
SC Float
Single Core Floating Point Speed
161 Pts Faster single-core fp speed.
+22%
132 Pts
QC Int
Quad Core Integer Speed
600 Pts Faster quad-core int speed.
+28%
469 Pts
QC Float
Quad Core Floating Point Speed
636 Pts Faster quad-core fp speed.
+28%
498 Pts
MC Int
Multi Core Integer Speed
1155 Pts Hugely faster multi-core int speed.
+85%
623 Pts
MC Float
Multi Core Floating Point Speed
1329 Pts Hugely faster multi-core fp speed.
+87%
710 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 8 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 $303.00 - $312.00
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
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) July 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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  • - 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.
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  • - Explore your best upgrade options with a virtual PC build.
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  • - Share your opinion by voting.

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CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $160Nvidia GTX 1060-6GB $290Samsung 850 Evo 500GB $121
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $162
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $166SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $951SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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