6 Cores, 12 Threads @2.66 GHz, Westmere EP.
Release date ≤ Q4 2013.


8 Cores, 8 Threads @4.0GHz, Piledriver.
Release date: Q4 2012.

Real World Speed
Performance profile from 243,898 user samples
9,043 User Benchmarks
Best Bench: 86% Base clock 4.35 GHz, turbo 4.75 GHz (avg)
Worst Bench: 64% Base clock 2.65 GHz, turbo 1.6 GHz (avg)
Poor: 64% Great: 86%
SPEED RANK: 229th / 1251
Gaming 73%
Desktop 74%
Workstation 59%
234,855 User Benchmarks
Best Bench: 74% Base clock 5.1 GHz, turbo 5.1 GHz (avg)
Worst Bench: 55% Base clock 4 GHz, turbo 2.55 GHz (avg)
Poor: 55% Great: 74%
SPEED RANK: 355th / 1251
Gaming 67%
Battle cruiser
Desktop 68%
Battle cruiser
Workstation 54%
Effective Speed
Effective CPU Speed
73.5 % Faster effective speed.
66.6 %
Avg. Memory Latency
91.8 Pts Slightly lower memory latency.
84.3 Pts
Avg. Single Core Mixed Speed
77.2 Pts Slightly faster single-core speed.
72.8 Pts
Avg. Dual Core Mixed Speed
154 Pts Slightly faster dual-core speed.
140 Pts
Avg. Quad Core Mixed Speed
299 Pts Faster quad-core speed.
265 Pts
Avg. Octa Core Mixed Speed
458 Pts +2% 449 Pts
OC Memory Latency
97.4 Pts +5% 93.2 Pts
OC Single Core Mixed Speed
103 Pts Faster OC single-core speed.
82.8 Pts
OC Dual Core Mixed Speed
204 Pts Faster OC dual-core speed.
163 Pts
OC Quad Core Mixed Speed
407 Pts Much faster OC quad-core speed.
307 Pts
OC Octa Core Mixed Speed
632 Pts Faster OC octa-core speed.
534 Pts
Market Share
Based on 30,112,431 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.04 % 0.74 % Insanely higher market share.
Value For Money
103 % Better value.
82 %
User Rating
UBM User Rating
63 % 73 % More popular.
Price (score)
$82 Much cheaper.
79+ Months More recent.
93 Months
OC Multi Core Mixed Speed
762 Pts Much faster OC 64-core speed.
535 Pts
Avg. Multi Core Mixed Speed
537 Pts Faster 64-core speed.
456 Pts

Overclocked from 2.6 GHz to 4.2 GHz stable watercooled. Max temp 60°C. Idle temp 35°C. 40% CPU usage on Battlefield 1. [Jan '18 pacmaN]


In terms of raw single-core performance the flagship AMD FX-8350 is lagging behind intel's processor line-up by over two generations. The PassMark Single Thread scores for the i5-2500K vs the FX-8350 are 1863 to 1520 which shows that in terms of raw per-core processing the FX-8350 is lagging the two year old i5 by 23%. Where the AMD FX makes up is on multi-core performance, with a score of 9156 vs 6745, the AMD leads the Intel 2500K by 36% making it the far more capable multi-threaded server orientated performer. The AMD is also cheaper but significantly more power hungry which counts strongly against it as a server proposition. The FX-8350 could be a good fit for specific server use cases but for general consumer use, which is single and dual core intensive, Intel's two year old i5-2500K delivers better performance. [May '13 CPUPro]


Processor Rankings (Price vs Performance) July 2020 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. 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]


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.
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
  • - 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

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