IntelBX80684I58600K
IntelBX80662I56600K

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

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About

4 Cores, 4 Threads @3.5GHz, Skylake.
Release date: Q3 2015.

Real World Speed
Performance profile from 329,813 user samples
121,572 User Benchmarks
Best Bench: 106% Base clock 3.6 GHz, turbo 5.4 GHz (avg)
Worst Bench: 76% Base clock 3.6 GHz, turbo 4.35 GHz (avg)
Poor: 76% Great: 106%
SPEED RANK: 19th / 1182
Gaming
Gaming 90%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 64%
Destroyer
208,241 User Benchmarks
Best Bench: 85% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 51% Base clock 3.5 GHz, turbo 0.75 GHz (avg)
Poor: 51% Great: 85%
SPEED RANK: 95th / 1182
Gaming
Gaming 69%
Battle cruiser
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 42%
Speed boat
Effective Speed
Effective CPU Speed
90.1 % Much faster effective speed.
+31%
68.9 %
1-Core
Avg. Single Core Mixed Speed
133 Pts Slightly faster single-core speed.
+14%
117 Pts
2-Core
Avg. Dual Core Mixed Speed
264 Pts Slightly faster dual-core speed.
+14%
232 Pts
4-Core
Avg. Quad Core Mixed Speed
515 Pts Faster quad-core speed.
+20%
428 Pts
8-Core
Avg. Octa Core Mixed Speed
726 Pts Much faster octa-core speed.
+66%
437 Pts
64-Core
Avg. Multi Core Mixed Speed
738 Pts Much faster 64-core speed.
+68%
440 Pts
1-Core
OC Single Core Mixed Speed
156 Pts Slightly faster OC single-core speed.
+12%
139 Pts
2-Core
OC Dual Core Mixed Speed
309 Pts Slightly faster OC dual-core speed.
+12%
276 Pts
4-Core
OC Quad Core Mixed Speed
607 Pts Slightly faster OC quad-core speed.
+14%
532 Pts
8-Core
OC Octa Core Mixed Speed
881 Pts Much faster OC octa-core speed.
+65%
533 Pts
64-Core
OC Multi Core Mixed Speed
887 Pts Much faster OC 64-core speed.
+66%
534 Pts
Market Share
Based on 19,511,295 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.7 % 0.9 % Higher market share.
+29%
Value
Value For Money
91.8 % Better value.
+23%
74.5 %
User Rating
UBM User Rating
73 % 73 %
Price
Price (score)
$260 $210 Cheaper.
+19%
Age
Newest
22 Months Much more recent.
+54%
48 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% 3.5 GHz
Turbo Clock
Turbo Clock Speed
4.3 GHz Slightly faster turbo frequency.
+10%
3.9 GHz
Series
CPU Architecture
Coffee Lake Skylake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 HD 530
Launch Date
Launch Date
Q4'17 Q3'15
Cache
Cache
9 MB 6 MB SmartCache
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
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015D (130W)
Memory Types
Memory Types
DDR4-2666 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 530
vPro Tech
Intel® vPro™ Technology ‡
Yes No
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 (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

The Intel Core i5-6600K is based on the new "Skylake" 14nm manufacturing process. Sporting 4 physical cores with base/turbo clocks of 3.5/3.9 GHz the 6600K and its predecessor, the 4690K share the same basic configuration and disappointingly, offer similar performance. Comparing the 6600K and 6700K shows that the 6700K has faster multi and single core performance. The improved multi core performance is due to Hyperthreading which is the key differentiator for the i7-6700K. The gap in single core performance can largely be eliminated by overclocking the i5-6600K so although the stock effective speed is significantly higher on the 6700K, this gap diminishes significantly when both processors are overclocked. At a 30% discount, the 6600K is the better value gaming CPU. [Aug '15 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) August 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.
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HDDRAMUSB
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