USB3.0 fast when importing, slow when writing.

Cedric27

Reputable
Oct 10, 2014
4
0
4,510
When importing files (transfering from usb flash drive or external hdd usb 3.0 to pc) speed is around 100 mb/s. When writing files (from pc to usb flash drive) speed is limited around 17/20 mb/s. Why is that? (The speed problem is with my desktop, my laptop can write files at 100mb/s speed.)
I have front and rear usb 3.0 ports, it's the same problem with the 5 of them.

(Speed is the same from pictures, to movies, etc.) I checked bios, it is set at ahci.

(internal HDD is 7200 rpm.) Sata 1 tb
win 7 64 bits
intel 3770
8gb ram 1600 ddr3
asus z77


 

snowctrl

Distinguished
What are your laptop and desktop, exactly...? There'll be a difference that accounts for the speed differential you're seeing

.... and how are you measuring speed? Try running Aja System Test (it's a free download) on the external drive when plugged into each of the computers