Bioshox 13:44 17 Aug 08

Right now I have a 450W Win Power
But I'm looking to get Crossfire going on this computer (I don’t have any GPU at the moment) at Christmas I’m getting a ATi Radeon 4870HD then I’ll see where to go from there!

My board has

Expansion Slots:

2 x PCI (32 bit)
1 x PCI-E 2.0 (x16)
1 x PCI-E 2.0 (x4)
3 x PCI-E x1

Anyone know if it is possible to get 1 GPU in the x16 then another in the x4

And can you recommend a Wattage for a single card AND 2 cards with crossfire


  Marko797 13:49 17 Aug 08

Might be worth u posting this in Games forum. I'm sure the likes of Crosstrainer can advise on your query, he's a bit of a guru on this type of stuff...

  I am Spartacus 13:57 17 Aug 08

Yes you can run both cards in the x16 and x4 but obviously the performance won't be as good as two x16 slots.

I ran two 3870's in a similar setup and only got a 30% performance increase. Also bear in mind that the 4870's run hot (mine's currently idling at 78oC) and a pair will generate a lot of heat. You can tweak the fan speeds though at the cost of a noise similar to a helicopter.

A single 4870X2 would give better results once the drivers are sorted.

  I am Spartacus 14:03 17 Aug 08

I've just remembered that I've read that some games actually produce lower frame rates with Crossfire although that's also possibly down to a driver issue.

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