Force ati drivers to use 8x agp mode

I have a Radeon 9800 pro AGP and installed the latest drivers. I checked my bios and 8x is enable, but when I load up the ATI catalyst control center and select the "8x" option it tells me to reboot, which is fine. I do reboot but when I open the control center back up it is back to no acceleration.


Any idea what I can do to force the drivers accept 8x?

reinstall your motherboard chipset drivers

Back when I had a 256MB 9800 Pro, I had the exact same issue.

I think the Control Center is faulty. Cuz although it said no hardware acceleration, any other utility I used showed 8X AGP. And sure enough, I was getting the performance in games.

I went through many versions of their drivers back then, and it always showed no hardware acceleration.

Well I have a p4 3.06 with a gig of ram and a Radeon 9800 pro 128mb.

When I use the suggested settings for DOD:source, if I run into the middel of avalance the fps drops down to like 8 and it become un-playable.

When I exit out of the game and check the heat of my cpu with mbm5 it says it's runing at 54 degrees which seems a little high, but I don't know if that is too high.

I'm not sure if my cpu isn't pullings it weight or if I'm just expecting too much out of my 9800.

I'm still trying to get my pc to recognize my usb key as a boot device because I don' have a floppy drive, thanks to my vid card using my power cord for the floppy bay.

I had a similar problem on an older chipset with ati settings.the work around i used was to say enable 8x in settings if it asks to reboot , don't. The settings stayed but not untill I rebooted it had something to do with ati vpu recover which I eventually disabled.

My HIS Radeon 9800 Pro wasn't stable at 8x AGP when I moved it to my gf's machine. Set it to 4x and it's perfectly stable now. Your losing very little performance by going from 8x to 4x.

It wont do 4x either

Try disabling fast writes, and video ram shadowing if that is an option in your bios.

its probaly glitched. when i had my 9800pro it had no problems with the 8x settings. o yeah i remembered reading somewhere that disabling fastwrite should fix some problems with videocards.

Just as a possible check, take a look at your PSU outputs. I was having a bunch of probs with my 9800 Pro, and it turned out to be a bad 5 volt rail in my power supply. Swapped it out, and I was back in business.

Originally Posted by WiseOx

Just as a possible check, take a look at your PSU outputs. I was having a bunch of probs with my 9800 Pro, and it turned out to be a bad 5 volt rail in my power supply. Swapped it out, and I was back in business.

I was thinking of buying a new PSU this weekend, the one I Have now is way too loud. Hopefully that will fix the problem.

away to isolate the psu problem is to up the agp volts from 1.5 to 1.6 that way if the juice fluctuates now it won't jump to low below 1.5 as it did before. But a good psu is an important component.

You can check your voltage levels in your bios. Or, install EVEREST by Lavalys. It's not dead on, as it's software based, but unless you want to use a volt meter, it's an option. Everest is how I discovered my PSU was bad.