IntelBX80684I58600K
IntelBX80677I57600K

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

4 Cores, 4 Threads @3.8GHz, Kaby Lake.
Release date: Q1 2017.

Real World Speed
Performance profile from 430,379 user samples
249,943 User Benchmarks
Best Bench: 102% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 81% Base clock 3.6 GHz, turbo 4.5 GHz (avg)
Poor: 81% Great: 102%
SPEED RANK: 51st / 1316
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 93%
Nuclear submarine
Workstation
Workstation 76%
Battleship
180,436 User Benchmarks
Best Bench: 94% Base clock 3.8 GHz, turbo 4.95 GHz (avg)
Worst Bench: 67% Base clock 3.8 GHz, turbo 4 GHz (avg)
Poor: 67% Great: 94%
SPEED RANK: 108th / 1316
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 64%
Destroyer
Effective Speed
Effective CPU Speed
91.6 % Slightly faster effective speed.
+9%
83.7 %
Memory
Avg. Memory Latency
91.2 Pts +3% 88.3 Pts
1-Core
Avg. Single Core Mixed Speed
129 Pts +4% 124 Pts
2-Core
Avg. Dual Core Mixed Speed
256 Pts +4% 245 Pts
4-Core
Avg. Quad Core Mixed Speed
499 Pts Slightly faster quad-core speed.
+9%
456 Pts
8-Core
Avg. Octa Core Mixed Speed
708 Pts Much faster octa-core speed.
+53%
463 Pts
Memory
OC Memory Latency
96.6 Pts +1% 96.1 Pts
1-Core
OC Single Core Mixed Speed
151 Pts Slightly faster OC single-core speed.
+6%
143 Pts
2-Core
OC Dual Core Mixed Speed
298 Pts +5% 285 Pts
4-Core
OC Quad Core Mixed Speed
589 Pts Slightly faster OC quad-core speed.
+8%
544 Pts
8-Core
OC Octa Core Mixed Speed
845 Pts Much faster OC octa-core speed.
+54%
550 Pts
Market Share
Based on 45,035,685 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.43 % Much higher market share.
+48%
0.29 %
Value
Value For Money
96 % +4% 92.4 %
User Rating
UBM User Rating
77 % Slightly more popular.
+5%
73 %
Price
Price (score)
$235 $194 Cheaper.
+17%
Age
Newest
45 Months More recent.
+17%
54 Months
TDP
Thermal Design Power (TDP)
95 Watts 91 Watts +4%
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
6 threads Much higher thread count.
+50%
4 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.6 GHz 3.8 GHz Slightly faster base frequency.
+6%
Turbo Clock
Turbo Clock Speed
4.3 GHz +2% 4.2 GHz
64-Core
OC Multi Core Mixed Speed
849 Pts Much faster OC 64-core speed.
+53%
555 Pts
64-Core
Avg. Multi Core Mixed Speed
715 Pts Much faster 64-core speed.
+54%
465 Pts
Series
CPU Architecture
Coffee Lake Kaby Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 HD 630
Launch Date
Launch Date
Q4'17 Q1'17
Cache
Cache
9 MB 6 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX 2.0
Recommended Price
Recommended Customer Price
N/A $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency
4.30 GHz 4.20 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-2666 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350 MHz 350.00 MHz
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
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]

MORE DETAILS

The i5-7600K targets high end gamers, it sits just behind the flagship i7-7700K in Intel’s Kaby Lake lineup. The 7600K will likely be the most popular gaming CPU of 2017 (some competition from AMD’s upcoming Zen/Ryzen CPUs, would be very welcome). Comparing the 7600K and 6600K shows that the two processors are very closely matched and comparing the 7600K vs the hyper-threaded 7700K highlights the relative strength of the 7700K for workstation performance. There are no significant architectural differences between Kaby Lake and Skylake so, when fully overclocked, the two generations should perform similarly but Kaby Lake offers faster base clocks, improved speed shift technology which helps CPU responsiveness, and better integrated graphics[Jan '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) July 2021 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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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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  • - 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.

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Intel Core i5-11400F $260Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $185
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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