PDA

View Full Version : USB 3.0 port transfer speed less than 1Mbs even after driver install.



Clownzilla
07-15-2014, 05:17 AM
I recently did a clean reinstall of Windows 8.1 64Bit and installed the drivers from the Asus website. I am having a problems transferring data via USB3 to different external drives. I have tried 3 drives and they all are USB 3.0 compliant and no matter what drive I use when trying to transfer a 2GB files I get a boost speed of over 100Mbs. but it quickly degrades to less than 1Mps. I have installed the 64 bit drivers from the Asus website (could not find a USB 3 driver but I assume the Chipset driver handles that) so I really don't know where to look from here. I have tried different ports, different cables, and different drives.Any help would be appreciated.

MeanMachine
07-15-2014, 06:02 AM
Hi Clownzilla.

Your problem could be the Bios setting for your HDD, Sometimes when flashing Bios or with fresh installs settings change.
It needs to be the same as when windows was originally installed.
Normally it should be AHCI, But sometimes with a bios flash, it will revert back to default which may be IDE.
Go into bios, see what it is set to:
Check then change it, and see if you can now boot back to windows. ie; if set to IDE, change it to AHCI, or if AHCI, set to IDE.
Set to optimized defaults, save, reboot back to Windows.

Hope this helps, If not please report back.

You may also need that USB 3 driver.

Clownzilla
07-15-2014, 07:58 AM
@MeanMachine

Thanks for the quick reply and advice:D
It's not the IDE\AHCI setting. I even changed the USB 3 preboot setting around to see if there was some sort of conflict going on and that wasn't the problem either. I uninstalled and reinstalled the Chipset driver and that wasn't the problem either. My last ASUS had a separate USB 3.0 driver from a company called Fresco Logic. The only problems I had with that were fixed by reinstalling the driver from the ASUS site. I assume though that the USB 3 is run off the chipset driver with this laptop since no separate USB 3 drivers are listed. I did happen to transfer other folders and it seems that the speeds are close to normal with folders that have fewer files. I realize that speed can change with larger transfers but the speed stays down between 500K to 1Mps after the short burst of speed.

MeanMachine
07-15-2014, 10:31 AM
Thanks for sharing that info Clownzilla, Sorry I was of no help.

I was interested cause although I have USB3 on my gaming Computer, I wanted the transfer speed on my other system. I am going to install a SkyMaster 4 port USB PCIe Card and hope I don't have the same issue.:D

Clownzilla
07-15-2014, 10:13 PM
Thanks for the help anyway:) I'm still trying to figure this out. Like I said, I had a 2GB transfer with around 10 files get 60-80Mps which is in the realm of what I was expecting (atleast what others have experienced via USB 3). However, when transferring 2GB with a few thousands files it drops down to 500Kps. Something is wrong here:(


Thanks for sharing that info Clownzilla, Sorry I was of no help.

I was interested cause although I have USB3 on my gaming Computer, I wanted the transfer speed on my other system. I am going to install a SkyMaster 4 port USB PCIe Card and hope I don't have the same issue.:D

Darnassus
07-16-2014, 02:34 PM
Well why didn't you say so? ;d

That's the issue. If you're copying smaller files, it needs to all be seeked, setup for transfer and put into containers.

Each individual file requires a small amount of time to be "seeked", written, contained in the new area of your drive, then reported as "finished" then works onto the next item.

And that's why Zip Files exist. ;p

Compare copying 50,000 little 1kb cache objects to a destination in a file.

Then zip it, then copy it again, see the difference.

Clownzilla
07-16-2014, 05:25 PM
I knew that this problem was most likely due to the fact of it having to find each separate file. I just didn't realize it would cut the performance down to sub-1Mps levels. Kind of makes sense when I think about it though. It's not just a lot of files, it's 5K+ number of files. Anyway, I did zip up the folders that were causing the issues and that obviously fixed my problem. Thanks for the input Darnassus:)


Well why didn't you say so? ;d

That's the issue. If you're copying smaller files, it needs to all be seeked, setup for transfer and put into containers.

Each individual file requires a small amount of time to be "seeked", written, contained in the new area of your drive, then reported as "finished" then works onto the next item.

And that's why Zip Files exist. ;p

Compare copying 50,000 little 1kb cache objects to a destination in a file.

Then zip it, then copy it again, see the difference.