4870 and new build problem

[isma]

I just bought a 4870 and put it in my old computer equiped with a E6400, Asus P5E X38 mobo, 2Gb of memory and a Zalman 600W power supply.

I saw a big boost in framerate in every game that I have.

Last week I've build a mini pc so I bought a Gigabyte EG31M-S2 mATX mobo (G31 chipset) and kept everything else that I had in my old computer (see above).

With a fresh install of Windows XP SP3 and onboard video disabled, my framerates have dropped seriously in the low 20's in my games.

I've tried the 8.6 driver with the hotfix and the 8.7 beta driver but no difference. Video card temp are fine and I have no problems other then the low framerates in games.

Anybody to give me a clue here ? Could it be the PCIE 1.1 that is bottlenecking the card ??


Thanks for your help !

 

[xcrico]

well, first off the PCIE 1.1 is not bottlenecking your card.

 

[isma]

That's what I thought at first but I've checked alost every settings in the bios and everything is ok...so I was just asking the question in case lol.

Cause I can't figure out what the problem is.

 

[SolidBladez]

Check GPU-Z and make sure your PCI-e slot is running in 16x.

 

[isma]

Check GPU-Z and make sure your PCI-e slot is running in 16x.

Yes I've checked CPUZ and GPU-Z, it runs at 16x.