Crossfire help

[jakethepimp69]

hi, this question has probably been asked many times and i appologise if it has. i own a 512mb powercolour 4870, and was wondering if i have to have the exact same card, make and ram and speeds etc, i say speeds because you can buy the overclocked cards out the box, but i have mine at those speeds anyway, if you get me, also i was lookin at the his one that overclockers has for £97 and the pic looks different, was just wondering if that would crossfire

thanx for reading

john j

 

[Alex74]

It used to be that you could only pair similar models, but as of CrossfireX you can pair multiple combinations.
For ref: http://game.amd.com/us-en/content/images/crossfirex/CF_combo_chart.jpg

So, by extension, I imagine you should certainly be ok with another model of 4870 even if it's set at a slightly different speed. Havent done it myself though..

(did you mean this card? http://www.overclockers.co.uk/showproduct.php?prodid=GX-100-HT)

Welcome to the forums

 

[Schizo]

It used to be that you could only pair similar models, but as of CrossfireX you can pair multiple combinations.
For ref: http://game.amd.com/us-en/content/images/crossfirex/CF_combo_chart.jpg

So, by extension, I imagine you should certainly be ok with another model of 4870 even if it's set at a slightly different speed. Havent done it myself though..

(did you mean this card? http://www.overclockers.co.uk/showproduct.php?prodid=GX-100-HT)

Welcome to the forums

nice bit of info there.

many thanks for posting that.

was after the same answer myself.

but i have got one more question.

ive got a saphier radeon 4850 (the one with the gold fan)

could i pair it with another make of 4850 as long as the memory is the same ?

ie:xfx and my radeon ?

 

[jakethepimp69]

yes that was the card i was thinking of, but does that mean i could get the powercolour 4870 1 gb, or any 1 gb card infact?

http://www.overclockers.co.uk/showproduct.php?prodid=GX-091-PC&groupid=701&catid=56&subcat=939

 

[Alex74]

From what I've read, there seems to be no reason why one couldnt pair cards with different amounts of memory.

However, it seems that only 512MB of the total 1GB would actually be used.

Beware power consumption if you're going to stick 2 4870s in there

Hence, on both questions I would have to say yes. As long as they're from the same family of cards they -should-, on paper, be supported in mixed crossfireX.