Realizing today that I don’t know very much about PSUs (Power Supply Units), I figured I mine as well research up and ask the masters before I purchase a new one.
I was just curious is anyone would be willing to explain some key purchasing guidelines and explanations about PSUs.
To Start, here are some things I would like to know.
1) What amount of Watts should one is targeting a SLI/Crossfire system compared to a non SLI/Crossfire system?
2) Everybody always mentions the +12v Rails, why are these so important? How many should a good PSU have? Should the amps coming off multiple rails be added for a "total" +12V amp measure, or is each rail independent. Ex: if i wanted by Total +12V amps to be 30. Would I be indifferent with 2 +12v of (15a) or 1 12v or (30a)?
3) Correct me if I’m wrong, but the image I have attached is a picture of the PSU's CPU powering wire, correct? My question is, my current PSU has 2 of these, is this for a true multi CPU setup, if not, I have no idea what to do with the second one.
If anyone has the time, I was curious if they could give me an honest opinion about THIS PSU. Based on this opinion, I will either keep it or upgrade it. Also, does its power output satisfy the needs of an ATI x1900xtx?
As always, thanks for reading!