weak usb performance


New Member
hi there,

perhaps someone could shed some light on this issue:

i/o performance when copying to an external usb3-disk was up to 120 MB/s under XP.
This is what I expected.

Since upgrading to WIN 8.1 i/o performance dropped down to a peak of 25 MB/s.

No Hardware change!
based on device manager no problems are reported, driver's up to date.
corresponding I/O port is recognized as USB-3 but performance is only about USB-2 .

anyone any idea to regain USB-3 performance?

thanx in advance

(HW: ASUS M5A88-V MoBo, AMD FX8350 proc )
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You didn't make a hardware change, but you made a major software change - you went from XP to Windows 8.1.

Go to the website for your motherboard, select your OS (Windows 8.1 64-bit or 32-bit), and download and install the latest USB driver. See if that fixes the problem.

M5A88-V EVO Driver & Tools | Motherboards | ASUS USA

If that doesn't fix things, then consider purchasing and installing an internal USB3 card for your computer.

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    Linux Mint 18.2 xfce 64-bit (host OS) / Windows 8.1 Pro 32-bit (virtual machine)
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    Dell Inspiron 3847
    12 GB
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    Acer 23"
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    Two hard drives, 1TB each: One for Linux, one for my data.
    IBM Model M
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    I use Samba to share my data drive with the other computers at my house.
thanx a lot 4 reply.

I've allready checked for new drivers and such at ASUS's server.
No success so far.

My question came up because of another reason:

I remember I've found in XP a config choice between reliable and hi-performance xfer
(or somehow similar terms) for USB(3) ports.
My guess is for reliable xfer they omitted a connection status check b4/after each
block transfer. But I can't find this choice any longer in 8.1.

Maybe this feature became some kind of a hidden feature?
If yes: where/how can I find it?
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