IntelBX80662I56600K
IntelBX80637I53570K

4 Cores, 4 Threads
@3.5GHz Skylake (2015)

4 Cores, 4 Threads
@3.4GHz Ivy Bridge (2012)

Real World Speed
Performance profile from 180,760 user samples
120,403 User Benchmarks
Best Bench: 107% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 64% Base clock 3.5 GHz, turbo 0.75 GHz (avg)
Poor: 64% Great: 107%
SPEED RANK: 40th / 1104
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 53%
Yacht
60,357 User Benchmarks
Best Bench: 91% Base clock 3.4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 57% Base clock 3.8 GHz, turbo 0.7 GHz (avg)
Poor: 57% Great: 91%
SPEED RANK: 80th / 1104
Gaming
Gaming 76%
Battleship
Desktop
Desktop 74%
Battleship
Workstation
Workstation 46%
Yacht
Effective Speed
Effective CPU Speed
86.8 % Slightly faster effective speed.
+15%
75.8 %
SC Mixed
Avg. Single Core Mixed Speed
119 Pts Slightly faster single-core speed.
+13%
105 Pts
QC Mixed
Avg. Quad Core Mixed Speed
451 Pts Faster quad-core speed.
+15%
392 Pts
MC Mixed
Avg. Multi Core Mixed Speed
461 Pts Slightly faster multi-core speed.
+15%
402 Pts
SC Mixed
OC Single Core Mixed Speed
143 Pts Faster OC single-core speed.
+16%
123 Pts
QC Mixed
OC Quad Core Mixed Speed
564 Pts Faster OC quad-core speed.
+18%
480 Pts
MC Mixed
OC Multi Core Mixed Speed
565 Pts Faster OC multi-core speed.
+17%
483 Pts
Market Share
Based on 8,844,688 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.27 % Much higher market share.
+51%
0.84 %
Value
Value For Money
96.3 % Better value.
+26%
76.5 %
User Rating
UBM User Rating
78 % Slightly more popular.
+13%
69 %
Price
Price (score)
$221 Cheaper.
+22%
$285
Age
Newest
33 Months Much more recent.
+55%
73 Months
TDP
Thermal Design Power (TDP)
91 Watts 77 Watts More energy efficient.
+15%
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
4 threads 4 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
3.5 GHz +3% 3.4 GHz
Turbo Clock
Turbo Clock Speed
3.9 GHz +3% 3.8 GHz
SC Int
Single Core Integer Speed
139 Pts Slightly faster single-core int speed.
+15%
121 Pts
SC Float
Single Core Floating Point Speed
147 Pts Faster single-core fp speed.
+18%
125 Pts
QC Int
Quad Core Integer Speed
548 Pts Faster quad-core int speed.
+16%
474 Pts
QC Float
Quad Core Floating Point Speed
579 Pts Faster quad-core fp speed.
+18%
490 Pts
MC Int
Multi Core Integer Speed
548 Pts Faster multi-core int speed.
+16%
474 Pts
MC Float
Multi Core Floating Point Speed
583 Pts Faster multi-core fp speed.
+19%
490 Pts
Series
CPU Architecture
Skylake (2015) Ivy Bridge (2012)
Socket
Motherboard Socket
FCLGA1151 FCLGA1155
Graphics
Integrated Graphics
HD 530 HD 4000
Launch Date
Launch Date
Q3'15 Q2'12
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$242.00 - $243.00 $225.00 - $235.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) 2011D
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR3 1333/1600
Memory Bandwidth
Max Memory Bandwidth
34.1 GB/s 25.6 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® HD Graphics 4000
Graphics Base Frequency
Graphics Base Frequency
350 MHz 650 MHz
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 up to 1x16, 2x8, 1x8 & 2x4

More specs » More specs »
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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]

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The Core i5-3570K Ivy Bridge processor is one of Intel's best performers to date. In terms of real world performance this processor offers far more than most users are likely to ever need. Scoring 2012 points on the PassMark Single Thread benchmark, the 3570K is within a few percent of the fastest processors currently available and at 77 watts TDP it's no energy hog either. The server orientated GeekBench and PassMark scores of 13920 and 7144 put the 3570K at just over the 50% marker in terms of total processing capacity compared to the other processors in the group test. For server based workloads more performance is available from the Core i7 range of processors but for typical consumer use this processor is already far more powerful than it needs to be. [May '13 CPUPro]

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Processor Rankings (Price vs Performance) May 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.
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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - 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 userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

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The Best.
CPUGPUSSD
AMD Ryzen 5 1600 $169Nvidia GTX 1070 $447Samsung 850 Evo 250GB $100
Intel Core i7-8700K $325Nvidia GTX 1060-6GB $295Samsung 850 Evo 500GB $137
Intel Core i7-7700K $299AMD RX 480 $330Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $960SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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