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tvgts
09-11-2009, 06:26 PM
Hi, am keen on some advice as a search on google has yieled mixed results. I have a Sapphire 4870 512MB and will soon get a Palit 4870 1GB Sonic off a mate. Im pretty sure I can set this cards up Crossfire but dont quite understand the clock mismatch thing everyone seems to be talking about on Google

Can someone confirm I shouldnt expect any issues? Also does the different memory amount matter?

Cheers in advance
T

whellington
09-11-2009, 06:32 PM
If either one isn't a factory OC version then they should xfire fine

edit:Dual? http://www.palit.biz/main/vgapro.php?id=969

Sapphire:
Memory Clock 1800MHz
Memory Size 512MB
Memory Interface 256-bit
Memory Type GDDR5

tvgts
09-11-2009, 06:34 PM
thanks - i know the Palit is the factory overclock sonic version which has a switch onboard kinda like a turbo switch. The Sapphire is standard.
Are you saying I cant Xfire in this case?

whellington
09-11-2009, 06:37 PM
thanks - i know the Palit is the factory overclock sonic version which has a switch onboard kinda like a turbo switch. The Sapphire is standard.
Are you saying I cant Xfire in this case?

You can but i think the Sapphire will OC itself to the palit's clock speed (not 100% sure though)

qazwsxokmijn
09-11-2009, 07:33 PM
The OC'ed Palit will downclock to Sapphire's clockspeeds. Also since the Palit is 1GB it will match Sapphire's 512MB.

Blam
09-11-2009, 07:59 PM
You might as well get a 512mb one rather than a 1gb, unless you're getting it extremely cheap/free