USB 3.0 woes on new PC

  Coxy_UK 19 Jan 13

Built a PC with a Gigabyte Z77X-D3H mobo, 8Gb Corsair RAM, i5 3470, in a BitFenix Colossus case. Windows 7 64bit.

I have installed the latest USB 3 drivers but at best they run at USB 2 speeds and on occasion with large files copying has failed.

Also PC will not boot if anything is in a USB3 port, I have disabled boot from USB in Bios.

Any help would be much appreciated. Cheers

  Fruit Bat /\0/\ 19 Jan 13

A stupid question but --- you are using a USB3 device and USB3 cable?

  Nontek 19 Jan 13

USB3 will only run at that speed if the hardware connected is also USB3. I am not sure that there is much USB3 hardware available at the moment.

Sorry if I am only 'teaching' you to suck-eggs,as they say!

  Chronos the 2nd 19 Jan 13

What the previous poster have said immediately sprung to mind.

  nickf 19 Jan 13

There could also be conflicts with the USB drivers . I have had similar problems trying to install S/W on customers PC`s .

  Coxy_UK 19 Jan 13

Hi yes it's a 64gb USB 3.0 stick that I am primarily trying to use.

The PC will with my Bluetooth dongle in a USB 3 port so it seems only storage devices stop it from doing so.

  Coxy_UK 19 Jan 13

Ok so I loaded default settings in Bios (very noob of me not to have done that already) and the PC booted with the stick plugged in.

I tried copying the same hd video over which took 4:00 mins in USB 2, in the USB 3 port it took 3:10 and the first half was done in 1 min so it dramatically slowed down as it copied.

  Coxy_UK 19 Jan 13

Tried the same file to the stick from my sata3 ssd and it took the same time.

I then copied from the stick back to the ssd and it took 1:30 remaining at a steady 74-75 mbps. I t's just the write speed then I assume that starts high and quickly falls to around 40 mbps.


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