IntelBX80662I56600K
IntelBX80646I54590

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

4 Cores, 4 Threads
@3.3GHz Haswell (2013)

Real World Speed
Performance profile from 139,941 user samples
111,329 User Benchmarks
Best Bench: 107% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 70% Base clock 3.5 GHz, turbo 0.75 GHz (avg)
Poor: 70% Great: 107%
SPEED RANK: 38th / 1089
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 54%
Yacht
28,612 User Benchmarks
Best Bench: 80% Base clock 0.8 GHz, turbo 3.7 GHz (avg)
Worst Bench: 54% Base clock 3.3 GHz, turbo 0.8 GHz (avg)
Poor: 54% Great: 80%
SPEED RANK: 109th / 1089
Gaming
Gaming 72%
Battleship
Desktop
Desktop 71%
Battleship
Workstation
Workstation 44%
Speed boat
Effective Speed
Effective CPU Speed
89.1 % Faster effective speed.
+23%
72.4 %
SC Mixed
Avg. Single Core Mixed Speed
122 Pts Faster single-core speed.
+21%
101 Pts
QC Mixed
Avg. Quad Core Mixed Speed
463 Pts Faster quad-core speed.
+24%
373 Pts
MC Mixed
Avg. Multi Core Mixed Speed
473 Pts Faster multi-core speed.
+23%
383 Pts
SC Mixed
OC Single Core Mixed Speed
145 Pts Much faster OC single-core speed.
+32%
110 Pts
QC Mixed
OC Quad Core Mixed Speed
564 Pts Much faster OC quad-core speed.
+35%
417 Pts
MC Mixed
OC Multi Core Mixed Speed
567 Pts Much faster OC multi-core speed.
+35%
420 Pts
Market Share
Based on 8,436,451 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.14 % Hugely higher market share.
+119%
0.52 %
Value
Value For Money
98.7 % Better value.
+27%
77.8 %
User Rating
UBM User Rating
87 % Much more popular.
+32%
66 %
Price
Price (score)
$222 Slightly cheaper.
+8%
$241
Age
Newest
32 Months More recent.
+29%
45 Months
TDP
Thermal Design Power (TDP)
91 Watts 84 Watts Slightly more energy efficient.
+8%
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 Slightly faster base frequency.
+6%
3.3 GHz
Turbo Clock
Turbo Clock Speed
3.9 GHz Slightly faster turbo frequency.
+5%
3.7 GHz
SC Int
Single Core Integer Speed
141 Pts Much faster single-core int speed.
+31%
108 Pts
SC Float
Single Core Floating Point Speed
149 Pts Much faster single-core fp speed.
+35%
110 Pts
QC Int
Quad Core Integer Speed
549 Pts Much faster quad-core int speed.
+33%
414 Pts
QC Float
Quad Core Floating Point Speed
584 Pts Much faster quad-core fp speed.
+40%
416 Pts
MC Int
Multi Core Integer Speed
550 Pts Much faster multi-core int speed.
+33%
414 Pts
MC Float
Multi Core Floating Point Speed
585 Pts Much faster multi-core fp speed.
+40%
417 Pts
Series
CPU Architecture
Skylake (2015) Haswell (2013)
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 530 HD 4600
Launch Date
Launch Date
Q3'15 Q2'14
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$242.00 - $243.00 $192.00 - $202.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2013D
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, DDR3L-1333/1600 @ 1.5V
Memory Bandwidth
Max Memory Bandwidth
34.1 GB/s 25.6 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® HD Graphics 4600
Graphics Output
Graphics Output
eDP/DP/HDMI/DVI eDP/DP/HDMI/VGA
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 2 GB
Graphics and IMC Lithography
Graphics and IMC Lithography
14 nm 22 nm
TSX-NI
Intel® TSX-NI
Yes No
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Revision
PCI Express Revision
3.0 Up to 3.0

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]

MORE DETAILS

The Intel Core i5-4590 is a slightly upgraded version of the i5-4570. The two processors are identical apart from a 100 MHz increase in base and turbo frequencies. Needless to say the two processors have almost identical effective speeds which is a little disappointing as Intel has simply re-released a near identical product. From a value for money perspective the 4590 does fare reasonably well although it probably has more multi-core horsepower than most use cases demand. For the majority of users, at stock clocks, the G3258 provides comparable performance but with a few simple BIOS adjustments the G3258 can be clocked up to 4.3 GHz where, even at half the price, it destroys the i5-4570 in single and dual core workloads. [Sep '14 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) April 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.

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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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