IntelBX80684I58600K
AMDFD8370FRHKBOX

6 Cores, 6 Threads
@3.6GHz Coffee Lake (2017)

8 Cores, 8 Threads
@4.0GHz Piledriver (2012)

Real World Speed
Performance profile from 22,882 user samples
12,105 User Benchmarks
Best Bench: 123% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 95% Base clock 3.6 GHz, turbo 2.25 GHz (avg)
Poor: 95% Great: 123%
SPEED RANK: 8th / 985
Gaming
Gaming 105%
UFO
Desktop
Desktop 101%
UFO
Workstation
Workstation 77%
Battleship
10,777 User Benchmarks
Best Bench: 66% Base clock 4 GHz, turbo 3.95 GHz (avg)
Worst Bench: 47% Base clock 4.3 GHz, turbo 1.4 GHz (avg)
Poor: 47% Great: 66%
SPEED RANK: 206th / 985
Gaming
Gaming 57%
Gunboat
Desktop
Desktop 56%
Gunboat
Workstation
Workstation 45%
Yacht
Effective Speed
Effective CPU Speed
105 % Hugely faster effective speed.
+84%
57 %
SC Mixed
Avg. Single Core Mixed Speed
136 Pts Much faster single-core speed.
+78%
76.6 Pts
QC Mixed
Avg. Quad Core Mixed Speed
535 Pts Hugely faster quad-core speed.
+92%
279 Pts
MC Mixed
Avg. Multi Core Mixed Speed
782 Pts Much faster multi-core speed.
+62%
484 Pts
SC Mixed
OC Single Core Mixed Speed
158 Pts Hugely faster OC single-core speed.
+83%
86.5 Pts
QC Mixed
OC Quad Core Mixed Speed
630 Pts Hugely faster OC quad-core speed.
+93%
326 Pts
MC Mixed
OC Multi Core Mixed Speed
928 Pts Much faster OC multi-core speed.
+65%
564 Pts
Market Share
Based on 7,461,238 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.08 % Hugely higher market share.
+440%
0.2 %
Value
Value For Money
111 % Much better value.
+52%
73.3 %
User Rating
UBM User Rating
116 % Much more popular.
+47%
79 %
Price
Price (score)
$250 $149 Much cheaper.
+40%
Age
Newest
4 Months Hugely more recent.
+90%
41 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
6 threads 8 threads Much higher thread count.
+33%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
3.6 GHz 4 GHz Slightly faster base frequency.
+11%
Turbo Clock
Turbo Clock Speed
4.3 GHz 4.3 GHz
SC Int
Single Core Integer Speed
154 Pts Much faster single-core int speed.
+66%
93 Pts
SC Float
Single Core Floating Point Speed
162 Pts Hugely faster single-core fp speed.
+102%
80.1 Pts
QC Int
Quad Core Integer Speed
613 Pts Much faster quad-core int speed.
+76%
349 Pts
QC Float
Quad Core Floating Point Speed
649 Pts Hugely faster quad-core fp speed.
+118%
298 Pts
MC Int
Multi Core Integer Speed
900 Pts Much faster multi-core int speed.
+58%
571 Pts
MC Float
Multi Core Floating Point Speed
966 Pts Hugely faster multi-core fp speed.
+98%
489 Pts
Series
CPU Architecture
Coffee Lake (2017) Piledriver (2012)
Socket
Motherboard Socket
FCLGA1151 AM3+
Graphics
Integrated Graphics
UHD 630 None
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The unlocked hex-core i5-8600K from Intel’s latest Coffee Lake generation of processors is the new flagship of the i5 series, succeeding the Kaby Lake quad-core i5-7600K. The 8th generation of processors brings the largest performance uplift since Sandy Bridge by adding more cores at each of the i3, i5 and i7 product lines. Like the other Coffee Lake processors, the i5-8600K is built upon optimized 14nm architecture, marginally improved upon from Kaby Lake and Skylake. The 8600K has a 95W TDP and a nominal stock clock of 3.6 GHz, which boosts to 4.1 GHz for all six cores, 4.2 GHz for dual/quad and 4.3 GHz for single core. Early benchmarks put the i5-8600K’s effective speed 15% ahead of the i5-7600K. A 50% increase in multi-core speed is explained by two additional cores and thanks to the quad-core clock bump from 4 GHz on the 7600K to 4.2 GHz on the 8600K there is also an additional 5% performance boost across all workloads. All Coffee Lake processors require a 300-series chipset, making a straight CPU upgrade unfeasible despite sharing the same socket as their Z270 predecessors. Even though most games still use less than 4 cores simultaneously, the i5-8600K is a great choice for gamers (especially streamers) but for $80 less, the 8350K which is faster than last years 7600K and only marginally weaker for gaming than the 8600K is certainly well worth considering as well. [Oct '17 CPUPro]

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The FX-8370 is a top of the range black edition Vishera eight core processor based on AMD’s Piledriver architecture. It was launched in September 2014 and is both cheaper and faster than the FX-8350. The FX range offers high performance and this particular processor holds a world record for reaching an incredible 8.7 GHz when overclocked under lab conditions. For typical users however, the FX-8370 runs at 4.0/4.3 GHz (base/turbo) and typically hits 5.0 GHz when overclocked. Its effective speed is 83 which is currently only exceeded by AMD's 20% more expensive FX-9590 (scoring 85), making it relatively good value for money. Eight cores aren’t necessary for most applications, but things are changing and if you heavily rely on multi-threaded applications then the FX-8370 may be a good choice. [Dec '14 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 $149
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $975SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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