5870 PCI Express query

[SpaceMoose]

Hi all. I recently downloaded the new look catalyst control center, and whilst having a look around the new layout I noticed that in the graphics hardware section it shows my maximum bus setting as PCI express 2.0 x8. I'm not the most knowledgeable person with things like this, but I wondered if this should show x16, and not x8, as the card is in a x16 slot. My graphics card is a 5870, and the motherboard is a gigabyte X58-UD3R. Any information on this would be greatly appreciated.

Thanks.

 

[pooley]

+1 I'm also intrigued by this..

 

[Confused Stu]

Just checked my Catalyst (yes, the new one) and mine is showing as PCI Express x16.

I'm running a single 5870 on an Asus P5Q-E. I know it's not the same motherboard (or even the same socket) as yours but at least it shows it's not a generic fault in the Catalyst software. What does CPUz show your link speed to be? If CPUz is showing x16 then I'd just write it off as a quirk of the Beta Catalyst and maybe let AMD know if you're feeling generous.

 

[johny dolan]

Mine shows Maximum Bus Setting PCI Express 2.0 x8

 

[rolypolyman]

Read this off the Gigabyte website.


(Note 2) For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16_1 slot; if you are installing two PCI Express graphics cards, it is recommended that you install them in the PCIEX16_1 and PCIEX16_2 slots.
(Note 3) The PCIEX8_1 and PCIEX8_2 slots share bandwidth with the PCIEX16_1 and PCIEX16_2 slots espectively. When PCIEX8_1 is populated with an expansion card, the PCIEX16_1 slot will operate at up to x8 mode; when PCIEX8_2 is populated with an expansion card, the PC IEX16_2 slot will operate at up to x8 mode.

May explain your predicament.