24 months ago
I'm trying to decide on a PSU for my new build. I guess the first place to start is how many watts it should be! The system build is saying that my proposed build will draw 583W (I have a crap-load of HDDs!) and from what I've read, you should use a PSU that will be at around 50% of it's capacity for best efficiency. For my system, that's going to be 1000W.
But then I was thinking maybe I should choose a 850W PSU instead. I probably do more internet browsing than gaming on my PC, so it would probably be best to assume that most of the time, the system won't be under load. So, choosing an 850W PSU should keep my watts close to 50% for the largest percent of the time that I'm using it and would be the most efficient, right? Would this be a good idea?
The next is models. I'm kinda limited on what brands are sold here in Japan, it seems like Corsair is probably the best brand that available to me. Looking at the recommend PSUs on Tom's Hardware, there is some pretty good showing of Corsair PSUs. They appear in the "best 1000" and "best 1500W" categories and usually have almost nothing listen in "cons".
Something I'm curious about is how identical a PSU series is between different wattage models. For example, Tom's calls the AX1500I "the best PSU money can buy" and Corsair's website says the AX series are their flagship series. So you would think that the AX series is incredible and would appear multiple times in Tom's "best PSUs", right? But they only appear once! In fact, the HX series make more appearances, not to mention they're more recently reviewed than the AX series. Why is this? Surely all PSUs in a series are exactly the same but just at a different watt rating? I have heard for example that the HXi series aren't as good as the older non-i series, but these are at least two different series, despite the similar name.
TL;DR should I go for a 850W or 1000W PSU? Should I choose the AX or HX series?