Ati 4870 - PCI2.0x2


I have been struggling with performance with world of warcraft and trying to find out what is the weakest link.

When checking the catalyst drivers (latest version) i notice that in the system information it is reporting max bandwidth of PCI2.0x2 rather than x16

When i run CPU-Z it shows the slot is a full x16 version.

Any ideas what i might have done that has caused this?

Motherboard Asus p45 P5q
CPU - Q9550 overclocked to 3.4ghz

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More about 4870 pci2
  1. Hello and welcome to the forums :)
    Download and install GPU-Z and check what it reports
  2. It reports that I have a PCI Express 2.0 x16 but the card is using x2.

    Will run 3dmark on it tonight and see how it compares, hopefully it will be inline with what other equal systems produce.
  3. I had a similar problem with my old 4870X2,i suddenly got a huge FPS drop in games and when i checked from GPU-Z my card was running @ 8x
    But yes check some games/3dmark and post the results
  4. How did you fix it?
  5. I couldn't fix it :( i bought a new GPU(Because the warranty time was over)
  6. Not the answer i was looking for lol.

    I have been tempted to buy a 5870, but realistically i only play world of warcraft on my pc, and i suspect it wouldn't come close to pushing a 4870 let alone a 5870.
  7. Yes a 4870 or even older cards can handle wow fine,is your card still under warranty ?
  8. Not sure.

    Still not had a chance to run a benchmark, really got to do it soon, just incase there is some warranty remaining.
  9. Is there any chance that the PSU isn't up to the job to support x16?

    If the PSU is bearly up to the job, what would you normally expect to happen?
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