IntelBX80684I58600K
IntelBX80684I59600KF

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

6 Cores, 6 Threads @3.70 GHz, 95 W.
Release date ≈ Q2 2019.

Real World Speed
Performance profile from 329,959 user samples
264,837 User Benchmarks
Best Bench: 101% Base clock 3.6 GHz, turbo 4.95 GHz (avg)
Worst Bench: 79% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 79% Great: 101%
SPEED RANK: 136th / 1441
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 74%
Battleship
65,122 User Benchmarks
Best Bench: 102% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 81% Base clock 3.7 GHz, turbo 3.7 GHz (avg)
Poor: 81% Great: 102%
SPEED RANK: 122nd / 1441
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 95%
Nuclear submarine
Workstation
Workstation 77%
Battleship
Effective Speed
Effective CPU Speed
90.7 % 93.2 % +3%
Memory
Avg. Memory Latency
90.1 Pts 91.4 Pts +1%
1-Core
Avg. Single Core Speed
129 Pts 134 Pts +4%
2-Core
Avg. Dual Core Speed
257 Pts 267 Pts +4%
4-Core
Avg. Quad Core Speed
502 Pts 521 Pts +4%
8-Core
Avg. Octa Core Speed
656 Pts 686 Pts +5%
Memory
OC Memory Latency
96.5 Pts +0% 96.4 Pts
1-Core
OC Single Core Speed
151 Pts 151 Pts
2-Core
OC Dual Core Speed
302 Pts 303 Pts +0%
4-Core
OC Quad Core Speed
594 Pts 597 Pts +1%
8-Core
OC Octa Core Speed
798 Pts 808 Pts +1%
Market Share
Based on 67,709,837 CPUs tested
Market Share
Market Share (trailing 30 days)
0.44 % Hugely higher market share.
+132%
0.19 %
Value
Value For Money
103 % 105 % +2%
User Rating
UBM User Rating
78 % 82 % Slightly more popular.
+5%
Price
Price (score)
$173 +4% $180
Age
Newest
78 Months 60+ Months More recent.
+23%
64-Core
OC Multi Core Speed
828 Pts 838 Pts +1%
64-Core
Avg. Multi Core Speed
681 Pts 712 Pts +5%
Launch Date
Launch Date
Q4'17 Q1'19
Cache
Cache
9 MB 9 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Max Turbo Frequency
Max Turbo Frequency
4.30 GHz 4.60 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015D (130W)
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
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 Up to 1x16, 2x8, 1x8+2x4

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 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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My favorite CPU of all time after the Core i3-8100 that I upgraded it from, to this, the amazing Core i5-9600KF, that has no problem being soft overclocked to 4.8 GHz on all cores with no stability or heat issues. I just love it and I have been using and don't plan on upgrading it anytime soon. What a beast! [Jun '23 therealmustii]

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Processor Rankings (Price vs Performance) April 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical 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.
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 Frequently Asked Questions

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The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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