Crossfiring radeon hd4870x2

[merdog41]

i was wondering if a 750watt power supply will support 2 hd 4870x2's in crossfire. i have an extra card thanks 2 a shipping error and was wondering if i can run it on my current setup.
intel corei7 2.6ghz
12gb of ram
750 watt power supply

 

[jedimasterben]

That's a sweet deal you got!!

It may be enough. With the information you provided, that's about 620w you'd be pulling. But if you have a more hard drives, fans, sound card, physics card, it may not be enough.

 

[dzeric]

I am running a similar setup with just one 4870x2, and am pulling 592w max load (overclocked, 5 drives, etc...). I would need to know more information, mostly the brand of the PSU.

 

[Angelusz]

It's safe to assume you'd be running on the edge. Yes, it's possible that your PSU holds out. But if you want to use that for a longer period of time and be sure that you don't run into any problems, get a proper 1000w PSU, e.g. a coolermaster realpower (medium price, proper quality).

 

[cjl]

Wait. If by "shipping error", you mean that you ordered one card and got two, I would contact the place you bought it from. It's an expensive card, and IMHO, it's better to be honest in a case like that.

Oh, and most 750W PSUs would be right on the edge when powering a pair of 4870x2s. You want a high quality 850, minimum.