Power supply for HD 4870 Crossfire

[Lord]

In the coming days, I will buy 3 graphics card ati 4870. I would like to know what power supply I should choose?

Here is my config

E8400 @ 4GHz
Motherboard: Asus P5Q-E
Ram: Corsair XMS2 Dominator 2x2GB Kit PC8500 DDR2-1066 CL5
Fan: Asus Silent Square
Graphic card (at the moment): nvidia 8800 GTS 512 MB
HDD: Western Digital 1TB SATA II 16MB
Power Supply (now): Gigabyte ODIN Pro 550W

[southparx]

Corsair 520W or just above

You want to have crossfire with 3 graphics cards? Can you explain me this?

[rohit007]

3 card?
waste of money especially on p45
X8 + X8 + X4, do not expect wonders.
Take rather a HD4870X2 which is probably even more stable and more perf

[Lord]

Ok thank you

Otherwise just to know?
If ever I see it an hd 4870x2? I have my power supply at this time sufficient? or will change?

[rohit007]

The problem is that your motherboard will start facing problem to make the crossfire because of its chipset. That is why you can take a rather simple HD4870X2 which return the same as the HD4870 in crossfire but with the concern of Chipset minus (turn your card well in X16, not X8 + X8)