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I was told that I could crossfire with this 550W PSU

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July 7, 2012 7:26:53 AM

I apologize ahead of time. I'm sure questions like this are asked all the time. So, again, I'm sorry for the repetition.

I was originally going to go with a higher wattage PSU, but I was told that it's the amperage in the 12v rails that matters most, and that a 550W would be fine. I'm kind of skeptical, though. The guide here recommends a 750W PSU for the two cards I may crossfire in the future. So I was wondering if this will be fine? And would it still be fine should I crossfire down the road?

I don't want to end up blowing up my computer due to some bad advice, or something. If the PSU won't be sufficient, could someone recommend me one?

PSU: Antec BP550 Plus 550W Continuous Power
+3.3V@28A, +5V@26A, +12V1@22A, +12V2@22A, +12V3@25A, -12V@0.5A, +5VSB@2.5A
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

MOBO: ASRock Z77 Extreme4 LGA 1155 Z77 ATX Intel Motherboard
CPU: Core i5 3570K 3.4GHz LGA 1155
RAM: 2x4gb DDR3 1600
GFX: XFX or MSI Radeon HD 7870 (possibly crossfire later)

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a c 111 ) Power supply
July 7, 2012 7:29:04 AM
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7870's in crossfire need at least a 650W psu.

the BP550 plus is a great power supply, but it doesn't have enough juice to power both of them. Just down the road, upgrade to a higher wattage power supply when you decide to crossfire.
July 7, 2012 7:33:15 AM

amuffin said:
Just down the road, upgrade to a higher wattage power supply when you decide to crossfire.


A solution I had not considered. That I will probably do. Thanks.
July 7, 2012 7:33:35 AM

Best answer selected by YattaRX8.
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