new memory stick....odd results?

joe pineapples · 20 Jul 2017 at 12:15

Just bought a SanDisk Ultra Flair 32 GB USB 3.0 stick and been testing it with crystaldiskmark and usb flash benchmark, with both giving similar results. That is, when I first plug the stick in, I get results about one third of those expected. If I then physically remove (software eject first) and insert it in the same socket, then re-run the benchmark, I get about the expected/rated speed. I don't know if its normal behaviour or if there's a problem, but obviously I don't want it defaulting at the lower speed if I need to use it for a bootable/install Win10 O.S (its main purpose).

(Running the benchmark twice without removing the stick gives the same slower result)

First time plugged in

Second time

thanks
joe

GWANGY · 20 Jul 2017 at 13:28

Actually you wouldn't notice the speed diff . for booting 4k read speeds.
try running more than 1 benchmark, fill the stick up fully first, then run more benchmarks.
reboot PC inbetween runs, note down everything

mistersprinkles · 20 Jul 2017 at 17:21

What motherboard and bios version?
have you altered USB settings in bios?

joe pineapples · 20 Jul 2017 at 19:06

mistersprinkles said:
What motherboard and bios version?
have you altered USB settings in bios?

Gigabyte Z77 D3H v1.1 (bios F22)

no settings altered for USB