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Is this enough for crossfire?

not according to the manual... you need a 550W minimum with 38A on the 12V rails... if it was a Corsair HX520 i'd say maybe, but as it is, i wouldn't be so sure...

frankly, i'm not so sure my Hiper will be able to handle the strain... and given the PSU's track record on reliability...
 
lame, i was really hoping i wouldnt have to buy a new power supply. :( oh and how do you find out how many A are on the 12v rails?
 
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does this mean it has 19A or do you add up the 3? if so does it have enough? and yeh either way i guess i might as well try it out first, it couldnt blow it up could it??
 
-iceblade^ said:
you add the three... it does have enough A, but not enough watts, according to the manual...
Click to expand...

No you don't.

408/12 = 34A

3 x 19 = 57A

Which do you think?

Not quite sure where to start with the A and watts bit, you can't have one without the other, Watts W = V x A.
They specify both, assuming a 550W psu should have enough. Its kinda meaningless tbh. Stick to the combined 12v current.
34A is pretty good, should be ok with 2x 3870 unless you have a uber OC cpu and loads of bits running in there.
 
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im confused, are you saying that it will be okay, or not? and the rest of my system is an e2180 at 3.2ghz running on a p5k, 2x2gig ram, 1 sata hdd and a couple of fans.
 
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