Intel
IntelBX80684I58600K

2 Cores, 4 Threads @3.3 GHz, Sandy Bridge.
Release date ≤ Q1 2014.

VS
About

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

Real World Speed
Performance profile from 144,843 user samples
379 User Benchmarks
Best Bench: 48% Base clock 3.3 GHz
Worst Bench: 34% Base clock 3.3 GHz, turbo 1.25 GHz (avg)
Poor: 34% Great: 48%
SPEED RANK: 443rd / 1203
Gaming
Gaming 44%
Speed boat
Desktop
Desktop 49%
Yacht
Workstation
Workstation 21%
Surfboard
144,464 User Benchmarks
Best Bench: 106% Base clock 3.6 GHz, turbo 5.1 GHz (avg)
Worst Bench: 80% Base clock 3.6 GHz, turbo 1.25 GHz (avg)
Poor: 80% Great: 106%
SPEED RANK: 25th / 1203
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 91%
Nuclear submarine
Workstation
Workstation 64%
Destroyer
Effective Speed
Effective CPU Speed
43.6 % 90.8 % Hugely faster effective speed.
+108%
1-Core
Avg. Single Core Mixed Speed
79.9 Pts 132 Pts Much faster single-core speed.
+65%
2-Core
Avg. Dual Core Mixed Speed
140 Pts 262 Pts Hugely faster dual-core speed.
+87%
4-Core
Avg. Quad Core Mixed Speed
205 Pts 513 Pts Hugely faster quad-core speed.
+150%
8-Core
Avg. Octa Core Mixed Speed
209 Pts 724 Pts Hugely faster octa-core speed.
+246%
1-Core
OC Single Core Mixed Speed
87.9 Pts 153 Pts Much faster OC single-core speed.
+74%
2-Core
OC Dual Core Mixed Speed
168 Pts 305 Pts Hugely faster OC dual-core speed.
+82%
4-Core
OC Quad Core Mixed Speed
228 Pts 601 Pts Hugely faster OC quad-core speed.
+164%
8-Core
OC Octa Core Mixed Speed
228 Pts 867 Pts Hugely faster OC octa-core speed.
+280%
Market Share
Based on 22,404,632 CPUs tested.
Market Share
Market Share (trailing 30 days)
0 % 0.75 % Insanely higher market share.
+∞%
Value
Value For Money
51.5 % 94 % Hugely better value.
+83%
User Rating
UBM User Rating
51 % 129 % Hugely more popular.
+153%
Price
Price (score)
$152 Much cheaper.
+38%
$245
Age
Newest
70+ Months 26 Months Much more recent.
+63%
64-Core
OC Multi Core Mixed Speed
230 Pts 874 Pts Hugely faster OC 64-core speed.
+280%
64-Core
Avg. Multi Core Mixed Speed
210 Pts 733 Pts Hugely faster 64-core speed.
+249%
Launch Date
Launch Date
Q3'11 Q4'17
Cache
Cache
3 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX2
Lithography
Lithography
32 nm 14 nm
Recommended Price
Recommended Customer Price
$144.00 N/A
Bus Speed
Bus Speed
5 GT/s DMI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1066/1333 DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 3000 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
850 MHz 350 MHz
# of Displays Supported
# of Displays Supported ‡
2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.1 GHz 1.15 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
No 2.0
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes
vPro Tech
Intel® vPro™ Technology ‡
No Yes
AES New Instructions
Intel® AES New Instructions
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Revision
PCI Express Revision
2.0 3.0

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

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.

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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The Best.
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