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Upgrading an 8X AGP card to a 4X port

Discussion in 'Hardware' started by kmcderm133, Jan 18, 2008.

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  1. kmcderm133

    kmcderm133 Thread Starter

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    A couple of weeks ago I bought a video card at the nearly-defunct Compusa. It's a Compusa brand GeForce FX 5200 128 MB card. It runs on 8x AGP, but from what I've read, it should be backwards compatible with my motherboard's 4x port. When I have the card in and boot the machine, I get a blank screen with no POST for a little over two minutes. After that, the machine POSTs and goes into the BIOS. It goes straight to the CPU speed settings, and there's a message on the right of the screen saying I have to correct the clock speed and reboot the machine after installing a new CPU. It's a bit frustrating... I've tried switching the 400 W PSU with a brand new 500 W PSU that I bought for my 'problem' machine. That hasn't changed anything. I've been in contact with NVidia, ASUS, and a little on the phone with Compusa, but mostly to tell me they can't do anything. Has anyone else had this problem? Do I have any recourse at this point? Is this something to do with settings in the BIOS? Does the CPU/memory speed ratio effect the AGP port? Thank you for your patience, any help would be appreaciated. :)

    -Kevin
     
  2. fairnooks

    fairnooks Banned

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    It should have said on the box or in the info for the card if its a 8x/4x card, which it probably is so it should be compatible. Once in a while you get a mobo that doesn't like one brand of video card but the other is just fine so that's a slight possibility. Is this a replacement card or in stead of onboard graphics?

    In any case your best bet for correcting is in the BIOS I think. You can try loading the fail-safe settings, optimal settings etc., if that doesn't work you can hunt around and see if there is somewhere that you can set the bus speed correctly or at least to something it will accept. Also there's a setting that I call the ESCD but it has different names. Sometimes enabling that when there is a hardware change will reload with the correct extended configuration data.

    ps. Yes the speeds of the buses has an effect on all pci and agp ports and memory unless there is a mechanism for unlinking them which only comes on more expensive overclocker-centric mobos for the most part.
     
  3. kmcderm133

    kmcderm133 Thread Starter

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    Thanks for your erpsonce :)The box doesn't say if it's 4x compatible or not. (I hope it is) THis is a replacement card, there are no onboard graphics. The only set of settings inn the BIOS is the Default settings. No optimal, or anything like that. Setting the bus speeds is very limited on this board, it seems like. I've looked some things up on Wikipedia. The PC2700 I'm using runs at 166 Mhz, but I think I remember this board only being compatible with PC2100, which runs at 133 Mhz. From what I could find on PCI and AGP, PCI runs at 33 Mhz, with AGP 4x at 266 and 8x at 533. Both AGP's run at 66 Mhz, strobing or overclocked to four or eight times per clock cycle. So, it seems like AGP runs at 66 MHZ, am I right on this? About the ESCD feature, the closest thing I found was something that let me set it to UC, or UCMD. I'm not sure I git that second one right. I downloaded BIOS Info Tool, and I got this from it:
    Supported features:
    [û] ASUS ACPI 0.9/1.x
    [û] System Management BIOS w/DMI v2.3
    [û] PCI IRQ Routing Table v1.0 (correct)
    [û] Trend ChipAwayVirus(R)
    [û] EL TORITO CD-ROM Boot Specification
    There's a bit more, I could post it if you think it would help?

    Ths speed setings in the BIOS were a bit frustrating, I can set it to Manual, but "19x" multiplier is not selectible. I can change the CPU/Memory ratio, which comes in 1:1, 3:2, 3:4, 3:5, and maybe 3:8? But then how does this relate to the AGP or PCI bus speeds? Should I just try and sell this card on Ebay, and find another one?

    -Kevin
     
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