Power supply question for A8N-SLI

[gixxer]

I have a Antec TrueBlue 480 watt power supply in my old case and I looked online to see that the +12v rail is rated at 28amps. I thought that this would be good enough for my new A8N-SLI that just arrived. However, I just pulled out the power supply from my old system and it turns out that I must have purchased one of the early models (I bought it when it first came out a couple of years ago) because the label on the side says that the +12v rail is only rated at 22amps.

I have been reading about the power supply issues with the A8N-SLI and I know I need to have a good power supply. So do you think this power supply will have enough amps to power the following system:

1 - BFG 6800 GT PCIe (possibly upgraded to 2 cards 6 months to a year from now)
1 - IDE dvd-rom
1 - IDE dvd/cd-burner
2 - IDE hard drives
1 - sata hard drive
1 - PCI sound card
1 - floppy
6 - USB devices
winchester 3200
various case and chipset fans

Or should I purchase a new Power Supply? If so, what do you recommend?

Thanks,

Gixxer

 

[akugami]

It should be ok for a single video card config provided you're not going for heavy overclocking. However, I think it's kinda low on the amperage to do dual video cards.

 

[gixxer]

I do plan on overclocking as high as I can go with air cooling (I bought a XP-90). I am hoping to at least reach 2.4ghz

 

[Promethply]

Unless you're planning to use dual 6800 Ultra when it's available for PCI-X, 22 amps on the 12V rail is more than good enough for your system.

 

[Merovingian]

PCI-X does not equal PCI-E. Video cards operate on the 3.3 and 5v rails anyway. First, is that the peak power or the actual power rating? I think that as long as you don't add two or three more hard drives to that max 22A you should be fine.

 

[ribbon13]

Modern GPUs draw more 12v power...

PCI-X != PCIe is quite right...

 

[gixxer]

the label on the side of the power supply says:

DC Output:+5V....+12V....+3.3V....-5V....-12V....+5V SB
Max. .........38A.....22A......30A.......0.5A....1.0A.....2.0A
Min. ..........0A......0.8A......0A.........0A.......0A........0A

+5V, +12V and +3.3V max. load 460W

 

[Promethply]

Originally posted by: gixxer
the label on the side of the power supply says:

DC Output:+5V....+12V....+3.3V....-5V....-12V....+5V SB
Max. .........38A.....22A......30A.......0.5A....1.0A.....2.0A
Min. ..........0A......0.8A......0A.........0A.......0A........0A

+5V, +12V and +3.3V max. load 460W

Should work just fine :thumbsup:

 

[FastEddie]

22a might be just a little tight for dual 6800's. You should be smooth for the moment though, but when you eventually do make the buy, don't get sucked into the "Sli Ready" crap because the psu is listed as having two pci-e power connectors and dual 12v rails. Look for a single rail unit with 28a and it'll take any components you have or will have.

 

[imported_Kensai]

Originally posted by: Promethply

Originally posted by: gixxer
the label on the side of the power supply says:

DC Output:+5V....+12V....+3.3V....-5V....-12V....+5V SB
Max. .........38A.....22A......30A.......0.5A....1.0A.....2.0A
Min. ..........0A......0.8A......0A.........0A.......0A........0A

+5V, +12V and +3.3V max. load 460W

Should work just fine :thumbsup:

Should be enough for what you're running.

 

[Merovingian]

Quite Incorrect and a little silly considering that ribbon is supposed to own a board which has two PCI-e slots and a PCI-x slot. A typo?

You said "PCI-X != PCIe is quite right... "

PCI-X does not equal PCIe.

PCIe is a common gpu interface on many single processor boards in todays market in 1x, 4x and 16x config. (don't know about 8x)

PCI-X is a server technology designed for RAID/SCSI cards (among other things) that need the extra bandwidth. This is commonly found in dual CPU boards.

For example, here is a board with both just like your board:

http://www.iwill.net/sppage/2004_10/2004_10.htm

Please show me a gpu which uses 12v rail, I don't know, I'm curious.

Pretty standard layout here....

http://www6.tomshardware.com/howto/20040122/power_supplies-04.html

I got

DC Output:+5V....+12V....+3.3V....-5V....-12V....+5V SB
Max. .........40A.....30A......32A.......0.5A....1.0A.....2.0A
Min. ..........0A......0.8A......0A.........0A.......0A........0A

 

[RY62]

Originally posted by: TheMerovingian

Please show me a gpu which uses 12v rail, I don't know, I'm curious.

http://www.bleedinedge.com/guides/psu_select/psu_select_06.html

Amps per rail and total watts for some common parts.

 

[FastEddie]

I can see 9.6 amps for the 130nm FX53, then 2x4.32=8.64 for a total of 18.2amps for just the cpu and 2x6800Ultra's.

 

[Merovingian]

Nice get RY! I'll keep this in mind! =)