why does GPU-Z show this??

[Adam123]

a little help please

I'm confused as to why GPU-Z is saying that one card is at x16 and the other is at x8... anyone any ideas?

They are on the the Asrock Extrme 7 Gen 3 mobo which allows x16 / x16 SLI... They are in slots 1 and 4 as per the manual :-s.

I have a Xonar DX in the last PCI slot but that cant be making a difference surely as its a x1 card :-s.

Thanks?

Pics..

GFX 1

GFX 2

 

[Surveyor]

It doesn't matter what speed card you put in the last x16 slot it'll still divert the full 8 lanes away from the second GTX 580.

Take the sound card out and the second GTX 580 will jump up to x16.

Either live with x8 (it makes sod all difference) or move the sound card to the x1 slot between the graphics cards.

 

[Cleeecooo]

What he said ^^

I wouldn't bother. X8 makes sooooo little difference it isn't worth it!

 

[Adam123]

Thanks for ur replies

 

[harmony]

If you believe it should run at x16 x16 mode according to the manual of the mobo, then get some load on both cards and see if it's x16 x16. The readings taken when idle cannot be regarded as the max speed supported as nvidia cards can reduce pci-e speed for power saving purposes.

 

[RJC]

Looking at the AsRock website you should be able run @ dual 16x. The second slot reduces to 8 x when you are running TRI SLI.

What slot is the 2nd card in? As the last slot will probably share bandwidth from the 2nd slot.

http://www.asrock.com/mb/overview.asp?Model=Z68 Extreme7 Gen3

 

[romper76]

yep that's right! Asrock Extrme 7 Gen 3 mobo only runs at x16x8 with two cards.