What size PSU do I actually need?

Soldato
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So, I know this isn’t super straightforward because I’m potentially asking about products that don’t exist yet, but I assume all components for a generation or three will have similar requirements...

I’m planning a build in the next few months, and the one thing I know little about is the size of PSU I’ll actually need.

I’m waiting to hear whether Ryzen 3000 will be suitable, and if not I’ll be going for a 9700k.
I’ll almost certainly go for a 2080Ti and I’d like to be in a position to upgrade that over the next few years.

I’ll only ever have a single GPU, and although I’m not an overclocker, I may well have a play around with a modest overclock.

No mechanical drives or anything else worthy of note.

Am I right in thinking 800w should be fine, or should I go higher?

Cheers for your time
 
Blinding, thanks guys.

So looks like I’ll go with an 800w Corsair PSU as I can get the sleeved cables I want, to go with RMX series, and seems 800w will be plenty.

I’ll also take on board what you’ve said and wait for Zen 2...

Cheers (thumbs up emoji)

Edit: seems an 800w as above doesn’t exist. I’ll go with the 750 80+ Gold unless it’s really worth going for the 850w...

https://www.overclockers.co.uk/cors...lar-power-supply-cp-9020179-uk-ca-23w-cs.html
 
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