Speed testing usb keys ?

[digitaldreams]

For comparison I've been using AS SSD benchmark for the last few years but notice the results can vary by up to 100Mb/s on repeated tests ???

I'm currently testing a new '512Gb SanDisk Extreme pro 3.2 gen 1' key against my old but incredibly long lasting and reliable '256Gb Corsair GT'. Initial test was disappointing, the Corsair beating the SanDisk. So I ran the test again and the SanDisk write speed was around 100Mb/s higher than during the first test ???

Any better speed testing software out there and ideas why the results fluctuate so much ? (AS SSD does do multiple runs during testing !)

Also are there SanDisk Extreme Pro gen 2 out there ??, wondering if I've landed an older model.

 

[mickyflinn]

Ive always used CrystalDiskMark .

https://www.google.com/amp/s/windowsreport.com/hard-drive-benchmark-software-windows-10/?amp

 

[Kautya]

Also used the above for benchmarking any drives that I have installed over the last few years. Presuming you used the same port during testing.

 

[digitaldreams]

Real world usage of the SanDisk it's clearly faster than the voyager yet their advertised speeds seem a gross exaggeration..