To test three USB Flash Drive I used Windows software HD Tune Pro is a hard disk / SSD utility with many functions. It can be used to measure the drive’s performance, scan for errors, check the health status (S.M.A.R.T.), securely erase all data and much more.
For OS X you can use free software available from Apple Store Blackmagic Disk Speed Test
#1 – HP 8GB v255w USB 2.0 Flash Drive MFG #P-FD8GBHP255-GE
READ TEST
WRITE TEST
#3 – Kingston DataTraveler SE9 32GB USB 2.0— DTSE9H
READ TEST
WRITE TEST
#2 – SanDisk Extreme 32GB USB 3.0 Flash Drive Model SDCZ80-032G-A75
32GB Up to 245 MB/s Read 100 MB/s Write Write up to 25 times faster than USB 2.0 drives** Transfer a full-length movie in less than 20 seconds**
READ TEST
WRITE TEST
Benchmark Results: