Crossfire question

[chuck990]

do both the cards in crossfire have to be exactly the same? or could you have an asus EAH 4850 (1Gig) and Saphire 4850 (512mb)

 

[Audigex]

Brand doesn't (shouldn't) matter

Preferably get two the same, just to minimise problems - and definately try to make sure they have the same clock/memory/shader speeds etc... but it shouldn't matter.

 

[chuck990]

klkl thanks

 

[dekez]

Here is ATI's compatibility chart if that helps

 

[chuck990]

so by that chart i could connect it to a 4870 x 2??

 

[unknownsock]

Conncting a single card to a X2 can cause a lot f problems and lower framrates.
Ive never heard of anyone doing this and getting good results.

 

[kitfit1]

Conncting a single card to a X2 can cause a lot f problems and lower framrates.
Ive never heard of anyone doing this and getting good results.

Very very wrong, i'm afraid.

One of the benefits of benching is finding the sweet spots for all sorts of hardware. A 4870x2 and a 4870 in Tri-Fire is one of those sweet spots. Benchies show that combo only slightly behind 2 4870x2's in Quad-Fire, but of course having the benefit of being cheaper. I've been running Tri-Fire for some time with no probs at all.

 

[LoadsaMoney]

Don't xfire a 1gb with a 512mb, as you will only get the 512mb (you'll lose the 1gb), as Xfire will only give you the memory from the card with the lowest amount, when differing memory sizes are used.