How many would even have anything near the recommended PS for a X1900XT?

Demoth

Senior member
Apr 1, 2005
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Not even some of the best rated and most popular PSUs on market supply more then 20A on the 12V rail, despite how many watts they are rated. And the recommended 38A for the crossfire means even fewer. Wonder how conservative ATI is being on the recommendation and if they are just going overboard to cover their bases and blame the PSU if anyone has a problem with the cards.
 

CP5670

Diamond Member
Jun 24, 2004
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Seems very exaggerated. I have only 28A and it's good enough for SLI.
 

Munky

Diamond Member
Feb 5, 2005
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420W OCZ Powersteam: 30A on 12v. But yeah, power ratings are often over rated.
 

Capt Caveman

Lifer
Jan 30, 2005
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I can't think of any high-end psu that has less than 20A on the 12v, the majority have over 30A nowadays.
 

cKGunslinger

Lifer
Nov 29, 1999
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Originally posted by: Capt Caveman
I can't think of any high-end psu that havs less than 20A on the 12v, the majority have over 30A nowadays.

Most decent ($39+) PSUs have 26A or 28A on the +12, you just have to look.
 

Wentelteefje

Golden Member
Dec 6, 2005
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Enermax EG365AX-VE(G)FMA 353W 26A @ 12V... Very nearly... ;) My ThermalTake PurePower 460W has a combined 29A... Still not "enough"... :(
 

Killrose

Diamond Member
Oct 26, 1999
6,230
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I've been running a 6800Ultra with a PSU well below recommended specs with no problems for over a year now. The point being all PSU's are not created equal and manufactures are covering their butt with system specs high enough to cover worse case scenario. However, I would not try and run one off my current PSU either.