Power supply question

[shadowr1ku]

Hello guys, sorry if this question is floating around somewhere but I have a really quick question:

I am planning to upgrade my rig starting my PSU because it's on sale at my local store, According to the eXtreme power supply calculator, they recommend 609~ watts. If I upgrade my PSU to a 750w now, will it not be efficient if my current build is under 600? Sorry if it's confusing, I'll try clearing up anything

[Grape Guild]

So your asking if buying a PSU with more wattage than you have will be inefficient?

[ForeseenVisionz]

Yes more than enough. What you are asking is when someone buys a ax1200i and only need like 250watts them itll probs be ineffienct. 100watts in your case would be fine even if you went to like 800 to 900 watts.

[Grape Guild]

Yes, go with that 750W.  That will give you plenty of room for overclocking and more hardware, but not too much room to where it becomes inefficient.  Hope this helps.

[shadowr1ku]

So your asking if buying a PSU with more wattage than you have will be inefficient?

Yeah that's what I mean

Yes more than enough. What you are asking is when someone buys a ax1200i and only need like 250watts them itll probs be ineffienct. 100watts in your case would be fine even if you went to like 800 to 900 watts.

That's what I was worried about, didn't know if it will throw anything off or wasting more energy than needed

[WoodenMarker]

Yeah that's what I mean

Maybe. It depends on how much power you actually need and what psus you're comparing.

Furthermore, psu calculators for the most part are highly inaccurate. 

[shadowr1ku]

Maybe. It depends on how much power you actually need and what psus you're comparing.

Furthermore, psu calculators for the most part are highly inaccurate.

Are they? Then what can I use as a reference?

[WoodenMarker]

Are they? Then what can I use as a reference?

See what others have measured using kill-a-watts. 

Or just other members who just kind of 'know' how much power it uses.