I currently have a Corsair CX430 V2 PSU in my desktop:
However, it's extremely loud, especially when I do any resource intensive work (running a VirtualBox instance, playing a game, or just on a hot day). I want to replace it very badly, however don't want to just buy another PSU that's just as loud (or only slightly quieter). I'm also having some trouble because I'm an English speaker, and find lots of reviews on PSUs and suggestions online, but living in the Czech Republic, the PSUs available locally are rarely ever the same or find-able by similar model numbers.
So, I was looking for some general guidelines on selecting a PSU that will hopefully run quietly 90% of the time. I can understand if I'm really cranking it with a game that it may run louder some of the time, but it's extremely frustrating to have a loud PSU going even when I'm just doing normal work.
The main question I have, which I can't find much about on the net, is this:
If I only need about 400-430W of power output (AMD PhenomII, NVidea GTX460), does it help to buy a PSU that has a larger output capacity? ie. 550, 650, or even 750? The reasoning being that since it's built to handle larger power throughput, that during normal operation it's only going to be putting out ~400W of power and therefore it's fans will run slower and quieter. This could be completely faulty logic, but I can't find any info on this.
If that's not the case, then I'm assuming the opposite would be true? To get as close to what I need without going too much over?
I'm just looking for some general rules on how I can select a replacement PSU at a local computer store simply based on it's specs, and not on user reviews which may not match up directly to the selection I have available to me.