Hardware, PSU, free Watts, Litecoin mining.

[pekv2]

I've got a PCPower and Cooling 750EPS12V 80Plus power supply. I bought it back in 2007, yes, kinda old. Never really been ran hard, I'd say 500Watts for an average of year and half total. Prior to mining, it probably pulled maybe 200 watts for the remaining 4 years.

Right now, with two 5850's and an I3-2100 mining litecoin, I am pulling about 473-475 Watts from the wall, metering it with a kill-a-watt meter.

Each 5850 is pulling around 170Watts.
I3-2100 is pulling 29 Watts.

Grand total, mining all together, it is pulling about 473-475 Watts from the wall.

This leaves me 275Watts free, from reviews also I've read on this PSU, it peaks at 825-850 watts equaling 350Watts free at Peak.

You think I would be able to add a 7950 to my mining rig and have enough power without burning up the PSU, on a guestimate?

To the hardware guru's what do you think?

[matauc12]

You shouldn't account for peak because peak will throttle down after a set amount of seconds (usually 60ish) but it will run an extra 7950 just fine.

[pekv2]

Yea, that's what I was thinking, it should be fine. It was either save for a 7950 or save and buy a new 1000w PSU save again and buy the 6950.

Thanks for the input.