IntelBX80684I78700K
AMDFD8320FRHKBOX

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

8 Cores, 8 Threads
@3.5GHz Piledriver (2012)

Real World Speed
Performance profile from 148,813 user samples
99,496 User Benchmarks
Best Bench: 123% Base clock 3.7 GHz, turbo 4.95 GHz (avg)
Worst Bench: 92% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 92% Great: 123%
SPEED RANK: 8th / 1117
Gaming
Gaming 107%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 95%
Nuclear submarine
49,317 User Benchmarks
Best Bench: 59% Base clock 4.5 GHz, turbo 4.5 GHz (avg)
Worst Bench: 40% Base clock 2.9 GHz, turbo 2.9 GHz (avg)
Poor: 40% Great: 59%
SPEED RANK: 317th / 1117
Gaming
Gaming 50%
Yacht
Desktop
Desktop 50%
Yacht
Workstation
Workstation 40%
Jet ski
Effective Speed
Effective CPU Speed
107 % Hugely faster effective speed.
+114%
50.1 %
SC Mixed
Avg. Single Core Mixed Speed
137 Pts Hugely faster single-core speed.
+102%
67.9 Pts
QC Mixed
Avg. Quad Core Mixed Speed
519 Pts Hugely faster quad-core speed.
+113%
244 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1079 Pts Hugely faster multi-core speed.
+155%
423 Pts
SC Mixed
OC Single Core Mixed Speed
154 Pts Hugely faster OC single-core speed.
+94%
79.5 Pts
QC Mixed
OC Quad Core Mixed Speed
608 Pts Hugely faster OC quad-core speed.
+108%
293 Pts
MC Mixed
OC Multi Core Mixed Speed
1238 Pts Hugely faster OC multi-core speed.
+138%
521 Pts
Market Share
Based on 9,763,406 CPUs tested.
Market Share
Market Share (trailing 30 days)
4.64 % Hugely higher market share.
+867%
0.48 %
Value
Value For Money
104 % Much better value.
+33%
77.8 %
User Rating
UBM User Rating
147 % Hugely more popular.
+145%
60 %
Price
Price (score)
$318 $90 Much cheaper.
+72%
Age
Newest
9 Months Hugely more recent.
+87%
69 Months
TDP
Thermal Design Power (TDP)
95 Watts More energy efficient.
+24%
125 Watts
Cores
CPU Processing Cores
6 cores 8 cores Much higher core count.
+33%
Threads
CPU Processing Threads
12 threads Much higher thread count.
+50%
8 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
3.7 GHz Slightly faster base frequency.
+6%
3.5 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Faster turbo frequency.
+17%
4 GHz
SC Int
Single Core Integer Speed
150 Pts Much faster single-core int speed.
+76%
85.4 Pts
SC Float
Single Core Floating Point Speed
159 Pts Hugely faster single-core fp speed.
+113%
74.8 Pts
QC Int
Quad Core Integer Speed
594 Pts Hugely faster quad-core int speed.
+92%
309 Pts
QC Float
Quad Core Floating Point Speed
629 Pts Hugely faster quad-core fp speed.
+133%
270 Pts
MC Int
Multi Core Integer Speed
1141 Pts Hugely faster multi-core int speed.
+115%
531 Pts
MC Float
Multi Core Floating Point Speed
1319 Pts Hugely faster multi-core fp speed.
+189%
456 Pts
Series
CPU Architecture
Coffee Lake (2017) Piledriver (2012)
Socket
Motherboard Socket
FCLGA1151 AM3+
Graphics
Integrated Graphics
UHD 630 None
ADVERTISEMENT

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 AMD FX-8320 has the same architecture and specs as the FX-8350, the only difference being the base/turbo clocks of 3.5/4.0 GHz for the 8320 vs 4.0/4.2 GHz for the 8350. Comparing the two models shows that the 8320 lags the 8350 at stock speeds by around 10% but broadly matches it when both processors are overclocked. This combined with the 8320's considerably lower price tag makes the 8320 the better value proposition. In terms of outright performance, as with all AMD CPUs, the FX series have very strong multi-core performance but lag Intel considerably in terms of single and dual-core throughput. [Mar '14 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]

ADVERTISEMENT

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.
  • - 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.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $318Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $121
Intel Core i7-7700K $275AMD RX 480 $280Samsung 850 Pro 256GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $74G.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
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback