crossfire question

[nukemdukem]

Hi, i am wondering with crossfire do you have to have 2 cards that are EXACTLY the same, identical in every detail? can they be different brands?

I am thinking of getting an ati 5770 but early next year i am going to upgrade my computer as my cpu, motherbaord, ram etc are not up to scratch, havent done a system upgrade for about 2 years.

I just got a new 22inch monitor (to be delivered sat) which is why i need a new graphics card, so i am stagering the cost of a complete system upgrade over a good 3-4 months.

So i am thinking of buying a 2nd ati 5770 when i upgrade my motherbaod and cpu - to be the most cost effective. But i am worried the card i get now wont be around next year, maybe there will be an updated version, higher clock core etc.

So would that matter?

Thanks

 

[nukemdukem]

ok cool, so really it does matter if they run at the same speed or even have the same amount of memory, i could just buy any ati 5770 to go with any existing ati 5770?

 

[nukemdukem]

ok cool thanks, i think thats what i will do, get 1 ati 5770 now and then another one in 3 months. that way when dx11 games start appearing i will get good performance. while at the moment i will get great performance on existing games with 1 ati 5770.