150W Rackmount PSU enough for basic A64 spec?

Noxis · 9 May 2006 at 17:00

Ok simple question, would a 1U rackmounted 150W PSU be able to run:

A64 CPU
Mobo
1x HDD
Ram

All else is on board the mobo, VGA, NIC etc. Single CPU fan and 2 chassis fans.

mc_bob · 9 May 2006 at 17:03

I really wouldnt want to chance it.
Do you have the amps on the rails?
Should say on a label on the psu.

MC_Bob

noxidjkram@hotm · 9 May 2006 at 18:35

I doubt it - 150w is less than some PIIs used to run on.

Not worth the risk IMHO.

M

welshtom · 9 May 2006 at 19:57

worth a go.

I run an athlon 64 on a cheap 300w psu.

Also shuttles only use 250w and run them fine,

can only try

noxidjkram@hotm · 9 May 2006 at 20:00

Tom you are such a risk-taker.

150w is such a small capacity... *bites nails* Only just more than half that 250w in the shuttles...

M

mrochester · 9 May 2006 at 20:19

Your average PC barely consumes over 200watts at full load, so I should imagine 150watts to be absolutely fine.

earlyflash · 9 May 2006 at 20:56

Don't some of the mini-itx boards take A64's? I'm sure that they run on 80W and less power supplies.

acharris · 9 May 2006 at 21:20

Hi, the only problem is will the 150W PSU have the extra 4 pin 12v connector to plug in to make sure that the A64 gets the additional 12V it needs to run the processor besides the mobo.

Anthony

Noxis · 10 May 2006 at 09:06

acharris said:
Hi, the only problem is will the 150W PSU have the extra 4 pin 12v connector to plug in to make sure that the A64 gets the additional 12V it needs to run the processor besides the mobo.

Anthony

Yes as it previously ran a P4.

Corasik · 10 May 2006 at 09:50

With 1 hard disk, integrated low power graphics solution, and no overclocking it would be no problem at all. AMD64's are not that power hungry, 85-95W officalliy I believe but thats like 'worst case' processor at full load+

A high quality 150W PSU rated for continuous operation probably has some in reserve for transient peaks which are higher.

Dutch Guy · 10 May 2006 at 10:05

http://www.silentpcreview.com/article313-page3.html Basic systems
http://www.silentpcreview.com/article313-page5.html total system power used is ~100W at full load

So I guess a 150W PSU is enough providing the 12V is quite good, if it is an older PSU the focus might be on the 3.3V and 5V rail in which case the CPU might not get enough power from the 12V rail.

pcoltrane · 10 May 2006 at 13:43

I am running a 3000+ venice, MSI K8NGM2-FID mobo with on board 6150 gfx, 4 x 256mb ram, 1 x 160gb HD and 2 x compro tv tuners.

Measuring power draw at the wall it idles at 68W and the highest load i have seen is around 110W, maybe a little less. Stressing everything to the max I can't see it being any higher than say 120W.

Don't forget that includes the PSU inefficiency. at low loads that probably accounts for 30% or more of the power draw at the wall. This means the PC itself probably never draws more than 80-90W even in the most extreme circumstances.

I'd say that a 150W PSU is enough assuming:

1. the psu actually provides it's rated 150W at higher temps (ie middle of summer)

2. It meets the 12v requirements.

Marc

Noxis · 10 May 2006 at 14:03

I dont consider temp's to be an issue as its at a data centre with a constant temp 365 days a year. The PSU has been running a same spec P4 for well over a year without a hitch, I think it'll be fine

pcoltrane · 10 May 2006 at 14:17

If it ran a P4 I think that's certainly a good indication it wil have an easier time with an A64. Go for it