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IntelBX80684I58600K
IntelBX80677I77700K

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

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

CSGO
Dust 2 1080p Max
280 EFps +4% 270 EFps
GTAV
Franklin & Lamar 1080p Max
110 EFps +2% 108 EFps
Overwatch
Temple of Anubis 1080p Max
138 EFps +3% 134 EFps
PUBG
M249 Training 1080p Max
135 EFps Slightly Better PUBG EFps.
+8%
125 EFps
Fortnite
UserBenchmark Island 1080p Max
133 EFps 145 EFps Slightly Better Fortnite EFps.
+9%
Real World Speed
Performance profile from 977,149 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: 154th / 1468
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 74%
Battleship
712,312 User Benchmarks
Best Bench: 92% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 71% Base clock 4.2 GHz, turbo 0.2 GHz (avg)
Poor: 71% Great: 92%
SPEED RANK: 209th / 1468
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 70%
Battleship
Effective Speed
Effective CPU Speed
90.7 % Slightly faster effective speed.
+8%
84.2 %
Memory
Avg. Memory Latency
90.1 Pts +1% 89.6 Pts
1-Core
Avg. Single Core Speed
129 Pts +2% 127 Pts
2-Core
Avg. Dual Core Speed
257 Pts Slightly faster dual-core speed.
+6%
242 Pts
4-Core
Avg. Quad Core Speed
502 Pts Faster quad-core speed.
+18%
426 Pts
8-Core
Avg. Octa Core Speed
656 Pts +1% 647 Pts
Memory
OC Memory Latency
96.5 Pts 96.5 Pts
1-Core
OC Single Core Speed
151 Pts Slightly faster OC single-core speed.
+6%
142 Pts
2-Core
OC Dual Core Speed
302 Pts Slightly faster OC dual-core speed.
+10%
275 Pts
4-Core
OC Quad Core Speed
594 Pts Faster OC quad-core speed.
+23%
482 Pts
8-Core
OC Octa Core Speed
798 Pts Slightly faster OC octa-core speed.
+8%
737 Pts
Market Share
Based on 68,954,865 CPUs tested
Market Share
Market Share (trailing 30 days)
0.46 % 1.07 % Hugely higher market share.
+133%
Value
Value For Money
110 % Slightly better value.
+9%
100 %
User Rating
UBM User Rating
77 % 84 % Slightly more popular.
+9%
Price
Price (score)
$140 Slightly cheaper.
+5%
$148
Age
Newest
85 Months Slightly more recent.
+10%
94 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 8 threads Much higher thread count.
+33%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.6 GHz 4.2 GHz Faster base frequency.
+17%
Turbo Clock
Turbo Clock Speed
4.3 GHz 4.5 GHz +5%
64-Core
OC Multi Core Speed
828 Pts Faster OC 64-core speed.
+11%
747 Pts
64-Core
Avg. Multi Core Speed
681 Pts +3% 662 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 8 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 $339.00 - $350.00
Max Turbo Frequency
Max Turbo Frequency
4.30 GHz 4.50 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015D (130W)
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
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
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 »

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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The Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '17 CPUPro]

MORE DETAILS

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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]

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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