IntelBX80684I58600K
IntelBX80623I52500K
$246

6 Cores, 6 Threads
@3.6GHz Coffee Lake (2017)

 $246 

4 Cores, 4 Threads
@3.3GHz Sandy Bridge (2011)

Real World Speed
Performance profile from 101,149 user samples
33,930 User Benchmarks
Best Bench: 120% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 91% Base clock 3.6 GHz, turbo 2.4 GHz (avg)
Poor: 91% Great: 120%
SPEED RANK: 10th / 1117
Gaming
Gaming 103%
UFO
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 75%
Battleship
67,219 User Benchmarks
Best Bench: 90% Base clock 3.3 GHz, turbo 5 GHz (avg)
Worst Bench: 52% Base clock 3.3 GHz, turbo 0.6 GHz (avg)
Poor: 52% Great: 90%
SPEED RANK: 126th / 1117
Gaming
Gaming 71%
Battleship
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 43%
Speed boat
Effective Speed
Effective CPU Speed
103 % Much faster effective speed.
+45%
70.8 %
SC Mixed
Avg. Single Core Mixed Speed
134 Pts Much faster single-core speed.
+36%
98.3 Pts
QC Mixed
Avg. Quad Core Mixed Speed
523 Pts Much faster quad-core speed.
+43%
365 Pts
MC Mixed
Avg. Multi Core Mixed Speed
760 Pts Hugely faster multi-core speed.
+104%
373 Pts
SC Mixed
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+29%
120 Pts
QC Mixed
OC Quad Core Mixed Speed
610 Pts Faster OC quad-core speed.
+29%
472 Pts
MC Mixed
OC Multi Core Mixed Speed
887 Pts Hugely faster OC multi-core speed.
+87%
475 Pts
Market Share
Based on 9,730,417 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.53 % Hugely higher market share.
+135%
0.65 %
Value
Value For Money
113 % Much better value.
+50%
75.4 %
User Rating
UBM User Rating
123 % Hugely more popular.
+92%
64 %
Price
Price (score)
$225 Slightly cheaper.
+9%
$246
Age
Newest
9 Months Hugely more recent.
+90%
90 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 Slightly faster base frequency.
+9%
3.3 GHz
Turbo Clock
Turbo Clock Speed
4.3 GHz Faster turbo frequency.
+16%
3.7 GHz
SC Int
Single Core Integer Speed
150 Pts Faster single-core int speed.
+24%
121 Pts
SC Float
Single Core Floating Point Speed
162 Pts Much faster single-core fp speed.
+34%
121 Pts
QC Int
Quad Core Integer Speed
587 Pts Faster quad-core int speed.
+24%
474 Pts
QC Float
Quad Core Floating Point Speed
647 Pts Much faster quad-core fp speed.
+36%
475 Pts
MC Int
Multi Core Integer Speed
850 Pts Much faster multi-core int speed.
+79%
476 Pts
MC Float
Multi Core Floating Point Speed
950 Pts Hugely faster multi-core fp speed.
+99%
477 Pts
Series
CPU Architecture
Coffee Lake (2017) Sandy Bridge (2011)
Socket
Motherboard Socket
FCLGA1151 LGA1155
Graphics
Integrated Graphics
UHD 630 HD 3000
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
Lithography
Lithography
14 nm 32 nm
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 3000
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
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Yes No
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
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]

MORE DETAILS

The i5-2500K is a second generation Sandy Bridge processor which is currently two generations old and nearly three years out of date. The many users that had the good sense to purchase this processor should feel in no hurry to upgrade as it's still no slouch, even by today's standards. The benchmark figures indicate that, even at stock clock rates, in terms of real-world performance this processor is approximately 20% slower than the best currently available, not bad considering its age. Given that the 2500K has an unlocked multiplier upping its performance by 10% with stock cooling should not pose much of a problem for the majority of owners. Here is a detailed performance comparison of the 2500K vs 4670K.  [Jul '13 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) July 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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CPUGPUSSD
Intel Core i7-8700K $340Nvidia GTX 1070 $400Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $160Nvidia GTX 1060-6GB $290Samsung 850 Evo 500GB $121
Intel Core i5-8600K $225AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
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Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $951SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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