Intel
IntelBX80684I58600K
  

2 Cores, 4 Threads @2.60 GHz, Kaby Lake.
Release date ≈ Q1 2017.

VS
About

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

Real World Speed
Performance profile from 120,006 user samples
9,353 User Benchmarks
Best Bench: 48% Base clock 2.7 GHz, turbo 3.5 GHz (avg)
Worst Bench: 25% Base clock 2.7 GHz, turbo 0.4 GHz (avg)
Poor: 25% Great: 48%
SPEED RANK: 379th / 1182
Gaming
Gaming 40%
Speed boat
Desktop
Desktop 56%
Gunboat
Workstation
Workstation 25%
Raft
110,653 User Benchmarks
Best Bench: 106% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 74% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 74% Great: 106%
SPEED RANK: 20th / 1182
Gaming
Gaming 90%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 64%
Destroyer
Effective Speed
Effective CPU Speed
40.4 % 90.1 % Hugely faster effective speed.
+123%
1-Core
Avg. Single Core Mixed Speed
89.7 Pts 133 Pts Much faster single-core speed.
+48%
2-Core
Avg. Dual Core Mixed Speed
163 Pts 264 Pts Much faster dual-core speed.
+62%
4-Core
Avg. Quad Core Mixed Speed
243 Pts 515 Pts Hugely faster quad-core speed.
+112%
8-Core
Avg. Octa Core Mixed Speed
246 Pts 726 Pts Hugely faster octa-core speed.
+195%
64-Core
Avg. Multi Core Mixed Speed
245 Pts 736 Pts Hugely faster 64-core speed.
+200%
1-Core
OC Single Core Mixed Speed
108 Pts 155 Pts Much faster OC single-core speed.
+44%
2-Core
OC Dual Core Mixed Speed
198 Pts 309 Pts Much faster OC dual-core speed.
+56%
4-Core
OC Quad Core Mixed Speed
288 Pts 607 Pts Hugely faster OC quad-core speed.
+111%
8-Core
OC Octa Core Mixed Speed
289 Pts 878 Pts Hugely faster OC octa-core speed.
+204%
64-Core
OC Multi Core Mixed Speed
291 Pts 881 Pts Hugely faster OC 64-core speed.
+203%
Market Share
Based on 20,252,719 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.1 % 0.73 % Hugely higher market share.
+630%
User Rating
UBM User Rating
57 % 65 % Slightly more popular.
+14%
Age
Newest
32+ Months 23 Months More recent.
+28%
Launch Date
Launch Date
Q1'17 Q4'17
Cache
Cache
3 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Embedded Options Available
Embedded Options Available
Yes No
Recommended Price
Recommended Customer Price
$281.00 N/A
Bus Speed
Bus Speed
4 GT/s OPI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR4-2133, LPDDR3-1866, DDR3L-1600 DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 620 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
300.00 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.10 GHz 1.15 GHz
Graphics Video Max Memory
Graphics Video Max Memory
32 GB 64 GB
Package Size
Package Size
42mm X 24mm 37.5mm x 37.5mm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
PCI Express Configurations
PCI Express Configurations ‡
1x4, 2x2, 1x2+2x1 and 4x1 Up to 1x16 or 2x8 or 1x8+2x4
Max # of PCI Express Lanes
Max # of PCI Express Lanes
12 16

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) September 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 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.

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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.
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  • - Share your opinion by voting.

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The Best.
CPUGPUSSD
Intel Core i5-9400F $140Nvidia GTX 1660 $220Samsung 850 Evo 250GB $60
Intel Core i5-9600K $225Nvidia GTX 1660-Ti $278Samsung 850 Evo 500GB $105
AMD Ryzen 5 3600 $195Nvidia RTX 2060 $340Samsung 850 Pro 256GB $211
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $70SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $34G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $64Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 16GB $24
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