IntelBX80684I58600K
IntelBX80623I52400

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

4 Cores, 4 Threads @3.1GHz, Sandy Bridge.
Release date: Q1 2011.

Real World Speed
Performance profile from 115,278 user samples
72,962 User Benchmarks
Best Bench: 118% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 88% Base clock 3.6 GHz, turbo 1.05 GHz (avg)
Poor: 88% Great: 118%
SPEED RANK: 25th / 1143
Gaming
Gaming 101%
UFO
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 73%
Battleship
42,316 User Benchmarks
Best Bench: 65% Base clock 3.6 GHz
Worst Bench: 45% Base clock 3.1 GHz, turbo 3.1 GHz (avg)
Poor: 45% Great: 65%
SPEED RANK: 242nd / 1143
Gaming
Gaming 60%
Gunboat
Desktop
Desktop 59%
Gunboat
Workstation
Workstation 36%
Jet ski
Effective Speed
Effective CPU Speed
101 % Much faster effective speed.
+69%
59.6 %
SC Mixed
Avg. Single Core Mixed Speed
131 Pts Much faster single-core speed.
+57%
83.3 Pts
QC Mixed
Avg. Quad Core Mixed Speed
512 Pts Much faster quad-core speed.
+67%
307 Pts
MC Mixed
Avg. Multi Core Mixed Speed
738 Pts Hugely faster multi-core speed.
+134%
315 Pts
SC Mixed
OC Single Core Mixed Speed
154 Pts Much faster OC single-core speed.
+73%
89 Pts
QC Mixed
OC Quad Core Mixed Speed
605 Pts Much faster OC quad-core speed.
+79%
338 Pts
MC Mixed
OC Multi Core Mixed Speed
879 Pts Hugely faster OC multi-core speed.
+159%
340 Pts
Market Share
Based on 12,819,532 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.52 % Hugely higher market share.
+171%
0.56 %
Value
Value For Money
107 % Better value.
+22%
87.5 %
User Rating
UBM User Rating
137 % Hugely more popular.
+114%
64 %
Price
Price (score)
$250 $105 Much cheaper.
+58%
Age
Newest
14 Months Hugely more recent.
+85%
95 Months
TDP
Thermal Design Power (TDP)
95 Watts 95 Watts
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 Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
3.6 GHz Faster base frequency.
+16%
3.1 GHz
Turbo Clock
Turbo Clock Speed
4.3 GHz Faster turbo frequency.
+26%
3.4 GHz
SC Int
Single Core Integer Speed
148 Pts Much faster single-core int speed.
+67%
88.4 Pts
SC Float
Single Core Floating Point Speed
161 Pts Hugely faster single-core fp speed.
+80%
89.3 Pts
QC Int
Quad Core Integer Speed
581 Pts Much faster quad-core int speed.
+71%
340 Pts
QC Float
Quad Core Floating Point Speed
640 Pts Hugely faster quad-core fp speed.
+88%
340 Pts
MC Int
Multi Core Integer Speed
830 Pts Hugely faster multi-core int speed.
+144%
340 Pts
MC Float
Multi Core Floating Point Speed
946 Pts Hugely faster multi-core fp speed.
+178%
340 Pts
Series
CPU Architecture
Coffee Lake Sandy Bridge
Socket
Motherboard Socket
FCLGA1151 LGA1155
Graphics
Integrated Graphics
UHD 630 HD 2000
Launch Date
Launch Date
Q4'17 Q1'11
Cache
Cache
9 MB 6 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX
Embedded Options Available
Embedded Options Available
No Yes
Lithography
Lithography
14 nm 32 nm
Recommended Price
Recommended Customer Price
N/A $178.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2666 DDR3 1066/1333
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 2000
Graphics Base Frequency
Graphics Base Frequency
350 MHz 850 MHz
# of Displays Supported
# of Displays Supported ‡
3 2
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.1 GHz
PCI Express Revision
PCI Express Revision
3.0 2.0

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]

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Pros: Brilliant value for money. Cons: It's not the 2400k which can be had for just a tiny bit more and offers a lot more flexibility in terms of overclocking. [Apr '12 CPUPro]

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Processor Rankings (Price vs Performance) December 2018 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. 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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  • - CPU tests include: integer, floating and string.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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CPUGPUSSD
Intel Core i7-8700K $365Nvidia GTX 1070 $335Samsung 850 Evo 250GB $67
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $98
Intel Core i5-8600K $250Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
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Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $830SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $140SanDisk Ultra Fit 32GB $12
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