Again I rather trust what robotech said.
Real info for 320 watt pelt
26 Imax 15.4V max 243.5wattage pull
Vmax of that 320 watt pelt is 15.4 V x 70-80%effieciency = 10.78-12.32 V
Example of people not understanding something and pointing out wrong info.
1) 7V is not going to get the best temps.
2) That chart for undervolting is slightly off.
EDIT: I have the charts for a few months and found a link how to read the charts
http://www.overclockers.com/tips40/
Verifies the calulations and what robotech said
I got a 226 watt pelt and 13.5 V psu to match that chart. Too bad I didn't read any info on the 70%-80% eff.
I been looking at that undervolting chart for a few months already and going on forums foraging info on pelt cooling that is second rate because of people who point out wrong info or have gaps in their knowledge and can't explain stuff simply like robotech did.
I pmed LS7 yesterday for more info on his undervolting pelts and I've read that thread from the start. Asking for a more comprhensive explanation.