adamsleath

I would look at the bequiet calculator as a guide on wattage. personally i don't have a problem with overkill. not much price difference between a 750 or 850 w psu...so i usually end up with the 850. with a power hungry gpu in mind. my current rig would no doubt run fine with a 550w. but i have run some power hungry systems in the past that i measured at 500+W (but this is from the wall) so....what the desired buffer to max output power is (which is what the rating of the psu means, and NOT power drawn from the wall outlet) ? I err on the side of caution. so, base it on the bequiet calculator. add your desired buffer. and presto, you have your psu sorted. I'd say an 850W will easily cover "any" (bar some totally over the top exception to the rule thing) single gpu system. people will say it is too much. i don't care. you have to base your decision on what you are comfortable with. i've heard all sorts of 'rules' . One that comes to mind is the 60% rule. (peak load percentage of max. output power) Personally i don't want to go above 75% of the psu's max. output power rating. And I don't want the psu's fan to ramp up in speed either.

1000W can do 2X2080ti's with a bunch of other stuff. https://www.bequiet.com/en/psucalculator I recommend this calculator as it is not as over-rated as some of the other ones. I find it useful. but hey, if you are dead set on 1000W, up to you. Browse this: Personally, I stick with Corsair for the warranty period. my latest purchase is 850W HXi I also have an EVGA 850W P2 - way overkill for my system. bigger psus' really only i would recommend for 2X gpu setups. bequiet generally have more multi-rail designs, which i like. corsairs hxi units have a "multi-rail" switch. == Also; check efficiency curves and noise profiles of the PSU's; use the calculator for Your setup, which you can plop in any proposed OC and various peripherals etc you might be contemplating for future upgrades (If Any super high end thing is in your mind) I don't ever plan on doing multi gpu or multi system setups these days. better to upgrade a single gpu in my opinion later on down the track. Realistically, as others have noted, you are more like to be in this range (550-750W) and quality psu's are more important than Watt Ratings.