PCI-E X16 card runnin at PCI-E x8

[meansizzler]

Will you get any performance drop if running a PCI-E x16 card at PCI-x8 speeds, reason asking is that the current 975X chipset conroe boards only support PCI-X8 if you use the secondary PCI-E Graphics slot
, plan on putting a PCI-Ex1 tuner in the secondary slot as there are no free available PCI-E x1 slots in the board I want..so anyone know the answer?...

 

[Darkwave]

Minimal at the most, you won't notice the difference. The whole bandwidth of PCE-E 16x is never used.

 

[FrankJH]

Minimal at the most, you won't notice the difference. The whole bandwidth of PCE-E 16x is never used.

Even a crossfire solution at 30" res wont use the whole bandwidth?

 

[Darkwave]

Even a crossfire solution at 30" res wont use the whole bandwidth?

Don't both slots clock down to 8x each in Crossfire or SLI anyway?

 

[MoRT489]

Don't both slots clock down to 8x each in Crossfire or SLI anyway?

currently yes but the RD600 will use both at x16 as independent dual cards or in crossfire!

 

[FrankJH]

Don't both slots clock down to 8x each in Crossfire or SLI anyway?

You are correct they do - I was trying to ask whether a mobo upgrade when its available to get dual X16 slots for a Xfire solution would be worth it, thats all

 

[Darkwave]

You are correct they do - I was trying to ask whether a mobo upgrade when its available to get dual X16 slots for a Xfire solution would be worth it, thats all

Ah right, well that I do not know but creed just pointed out that RD600 will support full 16x/16x bandwidth.

 

[Coolasmoo]

The RD580 already supports Dual 16X

 

[LoadsaMoney]

Yeah it was the od RD450 chipset that did Dual 8x, RD580 does the Dual 16x as said above.

 

[FrankJH]

The RD580 already supports Dual 16X

Very true but as yet you cant get either an RD580 or 600 based intel board, so just waiting for these releases for Conroe

Myabe I should rebuild My rig with my abit RD580 based board, Opty 170, dual xfire etc etc and see how it performs.

Second thoughts - nahhhhh even for a bank holiday that seems too much hassle lol, and I have to rebuild My bedroom shuttle this weekend due to a new seagate hdd failing -grrrrrr