IntelBX80684I78700K
AMDYD170XBCAEWOF

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

8 Cores, 16 Threads
@3.4GHz Zen (2017)

Real World Speed
Performance profile from 55,911 user samples
34,292 User Benchmarks
Best Bench: 126% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 96% Base clock 3.7 GHz, turbo 1.1 GHz (avg)
Poor: 96% Great: 126%
SPEED RANK: 5th / 985
Gaming
Gaming 111%
UFO
Desktop
Desktop 108%
UFO
Workstation
Workstation 98%
Nuclear submarine
21,619 User Benchmarks
Best Bench: 99% Base clock 4.05 GHz, turbo 4.05 GHz (avg)
Worst Bench: 77% Base clock 3.4 GHz, turbo 0.9 GHz (avg)
Poor: 77% Great: 99%
SPEED RANK: 29th / 985
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 95%
Nuclear submarine
Effective Speed
Effective CPU Speed
111 % Faster effective speed.
+25%
89 %
SC Mixed
Avg. Single Core Mixed Speed
141 Pts Much faster single-core speed.
+33%
106 Pts
QC Mixed
Avg. Quad Core Mixed Speed
541 Pts Much faster quad-core speed.
+31%
414 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1107 Pts 1177 Pts Slightly faster multi-core speed.
+6%
SC Mixed
OC Single Core Mixed Speed
157 Pts Much faster OC single-core speed.
+35%
116 Pts
QC Mixed
OC Quad Core Mixed Speed
621 Pts Much faster OC quad-core speed.
+34%
462 Pts
MC Mixed
OC Multi Core Mixed Speed
1256 Pts 1322 Pts Slightly faster OC multi-core speed.
+5%
Market Share
Based on 7,515,518 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.04 % Hugely higher market share.
+407%
0.6 %
Value
Value For Money
106 % Better value.
+17%
90.4 %
User Rating
UBM User Rating
139 % Much more popular.
+42%
98 %
Price
Price (score)
$330 $280 Cheaper.
+15%
Age
Newest
4 Months Much more recent.
+64%
11 Months
TDP
Thermal Design Power (TDP)
95 Watts 95 Watts
Cores
CPU Processing Cores
6 cores 8 cores Much higher core count.
+33%
Threads
CPU Processing Threads
12 threads 16 threads Much higher thread count.
+33%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.7 GHz Slightly faster base frequency.
+9%
3.4 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Faster turbo frequency.
+24%
3.8 GHz
SC Int
Single Core Integer Speed
154 Pts Much faster single-core int speed.
+38%
112 Pts
SC Float
Single Core Floating Point Speed
160 Pts Much faster single-core fp speed.
+32%
121 Pts
QC Int
Quad Core Integer Speed
611 Pts Much faster quad-core int speed.
+37%
446 Pts
QC Float
Quad Core Floating Point Speed
636 Pts Much faster quad-core fp speed.
+33%
479 Pts
MC Int
Multi Core Integer Speed
1156 Pts 1280 Pts Slightly faster multi-core int speed.
+11%
MC Float
Multi Core Floating Point Speed
1331 Pts +0% 1329 Pts
Series
CPU Architecture
Coffee Lake (2017) Zen (2017)
Socket
Motherboard Socket
FCLGA1151 AM4
Graphics
Integrated Graphics
UHD 630 None
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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]

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The AMD Ryzen 7 1700X isn't due for release until next week but two of our users has already submitted benchmarks. Comparing the quad and single core scores from our samples shows a relative 4.3% boost on the single core score so it’s possible that turbo wasn’t fully engaged (12% turbo boost expected). These preliminary results are seriously impressive as they put Zen’s IPC between 0% and 9% below Intel’s Kaby Lake. Even in the worst case scenario these results are still impressive. Comparing Intel’s $1,000 6900K and the 1700X shows that AMD delivers comparable performance for half the price! A shake-up of the CPU market will unfold as Zen rolls out. If Ryzen CPUs can overclock to 4.6+ GHz they will likely dominate the entire market putting a very welcome end to the monotonous tick-tock of recent years. [Feb '17 CPUPro]

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Processor Rankings (Price vs Performance) February 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.
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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - 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.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

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CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $146
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $79G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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