Will this be enough?

PixelVandalism

PixelVandalism

New Member
Is 550w psu enough for my build??

Okay so basically, is a 550W OCZ Fatal1ty PSU going to be enough for 2 HDD's a 1090T processor, a XFX 6850 graphics card and some fans ?

or should i go with one of these ?

http://www.umart.com.au/pro/products_review.phtml?id=10&bid=4&id2=140&sid=60176
http://www.umart.com.au/pro/products_review.phtml?id=10&bid=4&id2=140&sid=39015
http://www.umart.com.au/pro/products_listnew.phtml?id=10&id2=140&bid=4&sid=50862

the Fatal1ty is here
http://www.umart.com.au/pro/products_listnew.phtml?id=10&id2=140&bid=4&sid=38225

what do you think?

this is kind of urgent as i will be buying this in the next 2 days.
 
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It'll be plenty. The recommended PSU is for the whole system. This PSU has 450w on the 12v rail. The 1090T draws 125W at stock, and the 6850 draws 127W at stock. HDD's are like 25W each. That's a total of 302W, which is being on the safe side. It'll power it just fine.
 
linkin said:
It'll be plenty. The recommended PSU is for the whole system. This PSU has 450w on the 12v rail. The 1090T draws 125W at stock, and the 6850 draws 127W at stock. HDD's are like 25W each. That's a total of 302W, which is being on the safe side. It'll power it just fine.
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Awesome! thank you for helping :D
 
linkin said:
It'll be plenty. The recommended PSU is for the whole system. This PSU has 450w on the 12v rail. The 1090T draws 125W at stock, and the 6850 draws 127W at stock. HDD's are like 25W each. That's a total of 302W, which is being on the safe side. It'll power it just fine.
Click to expand...

Careful, 12v ratings on power supplies are misleading. For example look at the 550w fatality unit he posted. Its 550watt max but has TWO 12v rails at 25a each. That would mean (25x12)x2 = 600watt. Obviously this is impossible as the whole PSU is 550watt
 
The power supply has 450 watts on the 12v rail with a max of 37.5 amps. The 25 amps rails are just the most any (one) rail can pull before it trips. You dont add the rails together, unless its a true dual rail. Which this one is not.
 
ktec said:
Careful, 12v ratings on power supplies are misleading. For example look at the 550w fatality unit he posted. Its 550watt max but has TWO 12v rails at 25a each. That would mean (25x12)x2 = 600watt. Obviously this is impossible as the whole PSU is 550watt
Click to expand...

Correct. I also stated that the PSU had 450 watts available on the 12v rail.

StrangleHold said:
The power supply has 450 watts on the 12v rail with a max of 37.5 amps. The 25 amps rails are just the most any (one) rail can pull before it trips. You dont add the rails together, unless its a true dual rail. Which this one is not.
Click to expand...

Also correct :)
 
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