IntelBX80684I58600K
IntelFJ8068404064604

6 Cores, 6 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

VS
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4 Cores, 8 Threads @1.60 GHz, Whiskey Lake.
Release date ≈ Q3 2018.

Real World Speed
Performance profile from 152,878 user samples
139,790 User Benchmarks
Best Bench: 106% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 79% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 79% Great: 106%
SPEED RANK: 23rd / 1206
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 91%
Nuclear submarine
Workstation
Workstation 64%
Destroyer
13,088 User Benchmarks
Best Bench: 77% Base clock 1.8 GHz, turbo 3.35 GHz (avg)
Worst Bench: 36% Base clock 1.8 GHz, turbo 1.05 GHz (avg)
Poor: 36% Great: 77%
SPEED RANK: 200th / 1206
Gaming
Gaming 63%
Destroyer
Desktop
Desktop 67%
Battle cruiser
Workstation
Workstation 39%
Jet ski
Effective Speed
Effective CPU Speed
90.7 % Much faster effective speed.
+44%
63.1 %
1-Core
Avg. Single Core Mixed Speed
133 Pts Faster single-core speed.
+29%
103 Pts
2-Core
Avg. Dual Core Mixed Speed
262 Pts Much faster dual-core speed.
+33%
197 Pts
4-Core
Avg. Quad Core Mixed Speed
512 Pts Much faster quad-core speed.
+57%
326 Pts
8-Core
Avg. Octa Core Mixed Speed
729 Pts Much faster octa-core speed.
+66%
438 Pts
1-Core
OC Single Core Mixed Speed
153 Pts Faster OC single-core speed.
+29%
119 Pts
2-Core
OC Dual Core Mixed Speed
304 Pts Much faster OC dual-core speed.
+31%
232 Pts
4-Core
OC Quad Core Mixed Speed
603 Pts Much faster OC quad-core speed.
+38%
436 Pts
8-Core
OC Octa Core Mixed Speed
869 Pts Much faster OC octa-core speed.
+44%
604 Pts
Market Share
Based on 22,711,973 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.67 % Hugely higher market share.
+168%
0.25 %
User Rating
UBM User Rating
128 % Hugely more popular.
+110%
61 %
Age
Newest
26 Months 15+ Months Much more recent.
+42%
64-Core
OC Multi Core Mixed Speed
874 Pts Much faster OC 64-core speed.
+52%
574 Pts
64-Core
Avg. Multi Core Mixed Speed
736 Pts Much faster 64-core speed.
+78%
414 Pts
Launch Date
Launch Date
Q4'17 Q3'18
Cache
Cache
9 MB 6 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Recommended Price
Recommended Customer Price
N/A $297.00
Bus Speed
Bus Speed
8 GT/s DMI3 4 GT/s OPI
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2666 DDR4-2400, LPDDR3-2133
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® UHD Graphics 620
Graphics Base Frequency
Graphics Base Frequency
350 MHz 300 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.10 GHz
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 32 GB
Package Size
Package Size
37.5mm x 37.5mm 46x24
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
TSX-NI
Intel® TSX-NI
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16 or 2x8 or 1x8+2x4 1x4, 2x2, 1x2+2x1 and 4x1

More specs » More specs »
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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]

MORE DETAILS

If there is cold, then the Turbo Boost is awesome. [Dec '19 RedAty]

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Processor Rankings (Price vs Performance) December 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop 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]

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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.

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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.
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HDDRAMUSB
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