Originally Posted by Majin SSJ Eric
If you use a 1200W PSU to power two 560Ti's your PSU is going to be running so inefficiently. They are designed to work best near their power peak and efficiency goes down drastically when they have to run at lower power levels than they are designed for.
I saw a youtube video where a 500W PSU was powering a rig and its power draw was 150W. He then hooked up a 1000W PSU to the exact same rig and power draw went up to over 300W....
Hmm, you don't happen to have a link to that, or where I could find some more information comments about this?
I looked up some quick information on this, and if you take a look at this chart,
it seems as long as the load is greater then 20% so 0.20*1350 = 270W I should be running at at least 80% efficiency between Wattage coming in through AC and Wattage seen at the DC rails of the power supply. heres a link to the site i found the info on.
Heres a link to Hard OCP's review showing experimental data for the Enermax 1350 W at 29% load, so around 390W AC, gets converted to 346W DC for a efficiency of 88.72%Edited by arifay - 6/12/11 at 1:42pm