4 Cores, 4 Threads
@3.8GHz Kaby Lake (2017)

4 Cores, 4 Threads
@4.0GHz Coffee Lake (2017)

Real World Speed
Performance profile from 52,164 user samples
49,829 User Benchmarks
Best Bench: 112% Base clock 3.8 GHz, turbo 5.1 GHz (avg)
Worst Bench: 78% Base clock 3.8 GHz, turbo 0.8 GHz (avg)
Poor: 78% Great: 112%
SPEED RANK: 23rd / 1052
Gaming 95%
Nuclear submarine
Desktop 93%
Nuclear submarine
Workstation 58%
2,335 User Benchmarks
Best Bench: 114% Base clock 4 GHz, turbo 4.9 GHz (avg)
Worst Bench: 78% Base clock 4 GHz, turbo 4.75 GHz (avg)
Poor: 78% Great: 114%
SPEED RANK: 18th / 1052
Gaming 96%
Nuclear submarine
Desktop 94%
Nuclear submarine
Workstation 58%
Effective Speed
Effective CPU Speed
94.8 % 96 % +1%
SC Mixed
Avg. Single Core Mixed Speed
130 Pts 132 Pts +2%
QC Mixed
Avg. Quad Core Mixed Speed
492 Pts 498 Pts +1%
MC Mixed
Avg. Multi Core Mixed Speed
503 Pts 510 Pts +1%
SC Mixed
OC Single Core Mixed Speed
151 Pts 155 Pts +3%
QC Mixed
OC Quad Core Mixed Speed
588 Pts 598 Pts +2%
MC Mixed
OC Multi Core Mixed Speed
592 Pts 602 Pts +2%
Market Share
Based on 7,873,973 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.97 % Hugely higher market share.
0.14 %
Value For Money
106 % 118 % Slightly better value.
User Rating
UBM User Rating
106 % Much more popular.
70 %
Price (score)
$215 $169 Cheaper.
14 Months 6 Months Much more recent.
Thermal Design Power (TDP)
91 Watts 91 Watts
CPU Processing Cores
4 cores 4 cores
CPU Processing Threads
4 threads 4 threads
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.8 GHz 4 GHz Slightly faster base frequency.
Turbo Clock
Turbo Clock Speed
4.2 GHz +5% 4 GHz
SC Int
Single Core Integer Speed
148 Pts 151 Pts +2%
SC Float
Single Core Floating Point Speed
156 Pts 161 Pts +3%
QC Int
Quad Core Integer Speed
574 Pts 577 Pts +1%
QC Float
Quad Core Floating Point Speed
611 Pts 633 Pts +4%
MC Int
Multi Core Integer Speed
573 Pts 584 Pts +2%
MC Float
Multi Core Floating Point Speed
619 Pts 635 Pts +3%
Integrated Graphics
HD 630 UHD 630
CPU Architecture
Kaby Lake (2017) Coffee Lake (2017)
Motherboard Socket
CPU Architecture
Kaby Lake (2017) Coffee Lake (2017)
Motherboard Socket
Integrated Graphics
HD 630 UHD 630
Launch Date
Launch Date
Q1'17 Q4'17
6 MB 8 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$242.00 - $243.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2015C (130W)
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-2400
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
Intel® TSX-NI
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »

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]


The quad core i3-8350K hails from Intel’s most recent (and as yet unreleased) generation of Coffee Lake processors. It has a stock clock of 4.0 GHz, 8MB of cache and a TDP of 95W. The 8350K is the first i3 processor to feature four cores (previous generations of i3s had two cores and four threads). With this eighth generation of processors, Intel has introduced a step change in their nomenclature which witnesses the old quad core i5s become the new quad core i3s. Our benchmarks show a 25% increase in effective speed between generations of i3 8350K vs 7350K and near equivalence between the outgoing i5-7600K and the new i3-8350K. Although the price points of Coffee Lake are not yet known, if Intel keep them roughly in line with the previous generations (i3 ~= $140) this will represent the best improvement in value for money since Sandy Bridge as the 8350K at $140 would be 34.8% cheaper than a 7600K at $215. Cynics among us will see this as an effort to fend off competition from AMD’s new multi-core Ryzen processors. It appears Intel may have been successful with this move as early benchmarks from the 8350K suggest that it beats the more expensive 8 core Ryzen 7 1700 in single and quad core performance by 25%. The 8350K is a great choice for gaming builds, but the budget will also need to factor in a complementary motherboard based on the new 300 series chipset. Expect the quad core i3-8100 which is the 8350K’s little sister featuring a base clock of 3.6 GHz, to follow shortly. [Aug '17 CPUPro]


Processor Rankings (Price vs Performance) March 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]


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.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

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.
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  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on
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  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
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