First time crossfire question

T

Tehbolt

Limp Gawd
Joined
May 13, 2007
Messages
138
I'm planning on picking up another 4850 to crossfire, but I have one simple probablly pretty stupid question. Do they have to be the same brand? My current is Visontek, would the second have to be Visontek as well?

Thanks
 
No need the same brand but you should buy something with the same clock speed and memory size because Crossfire will drop the faster card to match the lower card.
 
i run an HIS and a sapphire 4850's in crossfire np. as mentioned above. get matching clocks.

 
Even though the conventional wisdom is you do not need the same branded pairs, I have always used two cards from the same vendor whether it is SLI or Crossfire.

There is no science to what I do, more superstition I guess.
Now currently in SLi the cards do not have to be the same clock speeds and they run independantly of each other.

I do not recall Crossfire doing that, but it is pretty easy to overclock using CCC Overdrive and get your pair running at the same clock speeds. I do remember seeing something about Crossfire utilizing the lowest memory of the pair......say a 4870 512MB and a 4870 1GB, the pair would only have 512 MB available each.
 
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