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SanDisk User
Posts: 30
Registered: ‎12-17-2014

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

What OS are you using ?

SanDisk Guru
Posts: 2,799
Registered: ‎07-23-2010

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

And if Windows are the flash drive's properties set to Performance or Safe Removal?

Ed
Important files = Backed up files
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SanDisk User
Posts: 30
Registered: ‎12-17-2014

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

Asus has a program "Power4Gear Hybrid". If this is on your system then go to advanced settings,usb,selective suspend and disable it on both Battery and Plugged in. Suspend will stop power to a port when it's inactive. Hope this helps

SanDisk User
Posts: 30
Registered: ‎12-17-2014

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

I also own a Extreme 3.0 64gb and got great readings from Atto.  Your readings are very low compared to what I was getting. R/265 W/174.  Maybe run a R/W test on another system. Usb device tree viewer will show you all usb devices, their respective speeds (i.e. High speed super speed,etc) and 2.0 or 3.0 port. Hope this helps

Newbie
Posts: 11
Registered: ‎02-03-2015

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

I'm using Win7 Home Premium SP1

Newbie
Posts: 11
Registered: ‎02-03-2015

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

they're set for performance - but to my understanding this just triggers the write cash, right?

So, it should not make a difference for big, e.g. 8GB files...

Btw, I had to reformat the drive to exFAT (from FAT32) since I'm using it for big data files.

But my benchmark tests did not show any difference before and after.

Newbie
Posts: 11
Registered: ‎02-03-2015

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

Yes, I found "ASUS Power4Gear". I probably never activated it before but did now and switched hard drive tomeout to never.

Let's see if it makes a change.

Many thanks for the hint!

Newbie
Posts: 11
Registered: ‎02-03-2015

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

USB device tree viewer lists the drive as a USB 3.0 mass storage device and says:

wSpeedsSupported         : 0x0E (Full-Speed, High-Speed, SuperSpeed)

 

any other attributes I should look at?

SanDisk User
Posts: 30
Registered: ‎12-17-2014

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

Open device tree and then plug in your usb. Where it shows your connection ( I believe it's red and blue) you should see an "SS" for super speed. You may have a Rotten Flash Drive otherwise

 

SanDisk User
Posts: 30
Registered: ‎12-17-2014

Re: SanDisk Extreme USB 3.0 64GB Flash Drive - slow performance

I did some rummaging around and found that an agressive anti virus could result in sub par preformance. Try disabling anti virus and run speed test.