Measures Sequential, 512K, 4K and 4KQD32 read/write speeds.

Fuss free simple benchmarking utility...

CrystalDiskMark allows you to benchmark any type of disk drive. The PC utility requires minimal configuration and out of the box reports several common speed measurements: Read and write speeds for Sequential (large contiguous files) , 512 KB (medium) and 4 KB (small) files. Additionally it reports read/write speeds for 4KB files whilst the drive is under load with 32 simultaneous requests. The results are displayed in a simple to use graphic. The software is freely available as either an install package or as a standalone application.

How to use CrystalDiskMark to benchmark your own drive

  • Download and launch the utility
  • Chose a drive with the dropdown on the upper right
  • Click "All"
  • Let the tests run and watch the various speed fields populate
  • After multiple runs, CrystalDiskMark will take best reading rather than the average


 Crystaldiskmark Screenshot

Download and try it for yourself, it's freely available at the below link.

Added 5 years ago.

Poor (edit your comment) Add link

14 months ago.

Just re-started use CrystalDiskMark [5.1.2]. Forgot hollw good it is. Thank you.


provides 8 measures; however, these depend on selected file size and block, hence not comparable: no common parameters. Other benchmark tools use standardized parameter sets.—Sep '14


9 months ago.

I have just found this site so I am new to this


22 months ago.

CrystalDiskMark is a sort of a de-facto standard when comparing the performance of USB sticks.


12 months ago.

Using settings of 1:50Mb & E: [external drive] 0/116Gb I had results of READ: 40.47; 0.697; 40.06; 0.588. Write: 39.90; 1.908; 39.43, 1.787. Can somebody translate the to FAST, SLOW, INDIFFERENT for me please. I have an HP laptop model 15-ac676TU with Intel Core i7-4510U CPU at 2.00 GHz 2.60 GHz


5 years ago.

Very good

5 years ago.

Great disk benchmarking utility with a clear and simple graphical display. Thanks to this, there are more screenshots from this benchmark on the web than any other. It's free, simple and has been around for ages.


 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $189AMD RX 480 $400Samsung 850 Pro 256GB $160
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $198SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $205SanDisk Extreme 16GB $18
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback