PDA

View Full Version : What PSU spec?



Fat Tone
22nd August 2006, 02:02
I needed an uprated PC and asked our regular PC supplier for a quote.

Brief spec: D945GTP-L mobo, PentiumD 960 (3.6GHz), WD 320GB 7200RPM SATA HDD, 4*1GB DDR2/533 RAM, floppy, DVDRW, 7900GT 256MB DDR3.

Trouble is they specced the standard uATX tower and 270W PSU! Surely not enough?

Gurm
22nd August 2006, 04:00
I needed an uprated PC and asked our regular PC supplier for a quote.

Brief spec: D945GTP-L mobo, PentiumD 960 (3.6GHz), WD 320GB 7200RPM SATA HDD, 4*1GB DDR2/533 RAM, floppy, DVDRW, 7900GT 256MB DDR3.

Trouble is they specced the standard uATX tower and 270W PSU! Surely not enough?

It might start up... then again it might not. LOL!

Even high quality PSU's like Antec need to be beefy enough for modern applications. I killed my Antec 380W with all the crap I put it through.

Mehen
23rd August 2006, 18:02
with that CPU and Video Card DO NOT even attempt it.

lowlifecat
23rd August 2006, 18:39
Find out what the min amps required for that GPU. Whatever that number is times 12 = min watts required.

Can't tell you what that number is offhand since I'm on bb but a 350 should be enough for the video and everything else... Unless you plan on sli?

Mehen
23rd August 2006, 20:51
That CPU alone ~130W - its a real hog. The GPU I think is somewhere around 65W under load. So just right there you are almost at 200W.

Mehen
23rd August 2006, 20:53
Get something over 400W.

lowlifecat
23rd August 2006, 22:03
here's the numbers i was talking about.

page 4 of guru3d.com nvidia review (http://www.guru3d.com/article/Videocards/326/4/)

CPU + GPU + componets should equal ~250watts peak consumption. a 270w will give you a little room to spare, 300w would give you room for a few extra hardrives. 350w to 400w would be overkill unless you plan on overclocking.

looks like who ever speced that system did thier math :)

Fat Tone
24th August 2006, 00:22
Thanks for all the replies.

What's interesting is I was expecting a raft of responses like Gurm and Mehen's, but wondered if the truth these days is closer to what llc said.

I went for 400W (which involved a larger case and extra cost) as a decision had to be made quickly.

Of course I realise quality is more important than quantity, along with having the amps available on the right rails.

Thanks again.

T.