PSU check

maddog · 18 Aug 2011 at 19:49

Hi
would a Corsair TX850M be pushing it for this setup or ok?

i5 2500k @ 4.6
asus p8p67 pro b3
4 gig ddr3
2 x gtx 480
1 ssd
1 sata hd
dvdrw drive

gfx cards will be at stock only overclock is cpu.

thanks

Tbid · 18 Aug 2011 at 19:52

I'm pretty sure you'll be fine with that.

stulid · 18 Aug 2011 at 19:56

Just.

Ideally something closer to 1K watt is better.

http://www.guru3d.com/article/geforce-gtx-470-480-review/13

A second card requires you to add another 250 Watts. You need a 850+ Watt power supply unit if you use it in a high-end system (1 KiloWatt recommended).

http://www.anandtech.com/bench/Product/159

Crysis - 668w
Furmark - 851w

But you are using sandybridge which consumes less power than whats in the Anandtech test system.

Tealc · 18 Aug 2011 at 21:03

Another thing to consider is that the system power may actually be power drawn from the wall and not the actual dc power the PSU is converting. I'm not sure how that site report their power draw. If it's wall power then a true 850w pay will draw 950-1050w from the wall at it's peak depending on it's efficiency and mains voltage.

Foehammer2003 · 18 Aug 2011 at 21:39

Is there anything one could use to measure how effective a PSU is? Ideally software, but i have a multi-meter handy.

Power pulled from the socket is easy. But anything to see if your PSU is struggling with output?

Slight hijack (soz) thought it might help OP too tho

Aretenon · 18 Aug 2011 at 23:42

Tealc said:
Another thing to consider is that the system power may actually be power drawn from the wall and not the actual dc power the PSU is converting. I'm not sure how that site report their power draw. If it's wall power then a true 850w pay will draw 950-1050w from the wall at it's peak depending on it's efficiency and mains voltage.

Guru3d definitely measure the power consumption at the wall.
Don't know about Anandtech tho.