IntelBX80684I58600K
AMDFD8350FRHKBOX

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

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

Real World Speed
Performance profile from 168,140 user samples
39,954 User Benchmarks
Best Bench: 118% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 91% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 91% Great: 118%
SPEED RANK: 11th / 1117
Gaming
Gaming 102%
UFO
Desktop
Desktop 98%
Nuclear submarine
Workstation
Workstation 74%
Battleship
128,186 User Benchmarks
Best Bench: 63% Base clock 4.85 GHz, turbo 4.85 GHz (avg)
Worst Bench: 46% Base clock 4.2 GHz, turbo 1.4 GHz (avg)
Poor: 46% Great: 63%
SPEED RANK: 268th / 1117
Gaming
Gaming 55%
Gunboat
Desktop
Desktop 55%
Yacht
Workstation
Workstation 44%
Speed boat
Effective Speed
Effective CPU Speed
102 % Hugely faster effective speed.
+84%
55.4 %
SC Mixed
Avg. Single Core Mixed Speed
133 Pts Much faster single-core speed.
+80%
73.9 Pts
QC Mixed
Avg. Quad Core Mixed Speed
518 Pts Hugely faster quad-core speed.
+91%
271 Pts
MC Mixed
Avg. Multi Core Mixed Speed
752 Pts Much faster multi-core speed.
+59%
474 Pts
SC Mixed
OC Single Core Mixed Speed
154 Pts Hugely faster OC single-core speed.
+86%
82.8 Pts
QC Mixed
OC Quad Core Mixed Speed
602 Pts Hugely faster OC quad-core speed.
+94%
311 Pts
MC Mixed
OC Multi Core Mixed Speed
882 Pts Much faster OC multi-core speed.
+62%
545 Pts
Market Share
Based on 9,846,660 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.6 % Slightly higher market share.
+11%
1.44 %
Value
Value For Money
109 % Better value.
+26%
86.2 %
User Rating
UBM User Rating
122 % Hugely more popular.
+97%
62 %
Price
Price (score)
$245 $90 Much cheaper.
+63%
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
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 +2% 4.2 GHz
SC Int
Single Core Integer Speed
149 Pts Much faster single-core int speed.
+68%
88.8 Pts
SC Float
Single Core Floating Point Speed
161 Pts Hugely faster single-core fp speed.
+106%
78.2 Pts
QC Int
Quad Core Integer Speed
577 Pts Much faster quad-core int speed.
+75%
330 Pts
QC Float
Quad Core Floating Point Speed
637 Pts Hugely faster quad-core fp speed.
+121%
288 Pts
MC Int
Multi Core Integer Speed
840 Pts Much faster multi-core int speed.
+52%
554 Pts
MC Float
Multi Core Floating Point Speed
942 Pts Hugely faster multi-core fp speed.
+99%
474 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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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 sever 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]

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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.
  • 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 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

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CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $120
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $945SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $58HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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