Recommended wattage for this setup?

Hello, 

What wattage would be optimal for this setup?

AMD FX-8350

Radeon 7870 x2 (with slight crossfire and dual fans on each)

A harddrive, and 5 LED fans

I have an Antec 900 high current gamer series psu, which I figure would be enough for this system.

However would would be the minimum or optimal wattage that you would want for a system like this?

(I want to know so if could getr a feel for the headroom I'll have for future upgrades)

900 should be good, but i need to know your full build to be sure. you would have about 250 watts overhead (extra).

It's about 700W minimum for that setup. The 900 gives you plenty of overhead for boost modes if you have them enabled.

600/650 minimum i'd say. the 8350 takes over a 120W on extreme loads which gaming will never do to a cpu.

My 8350 @ 4,76Ghz and 2 7970s @ 1050mhz pull about 700 Watt Max of my PSU when being tortured.

Go figure.

https://teksyndicate.com/forum/other-hardware/power-supply-paradox/144195?page=1

for the non-believers

High wattage PSU's are overrated.

That stat depends on IF the 8350 is overclocked, and if so, how much and what voltage?

There is also the question of are the GPUs overclocked, at all, too?

Dem variables. But if it's all stock, 650 should do fine.

 

yup

Wow, that's shocking. I think I have that exact same PSU so I'll have to try that test eventually.

It's not the wattage it's the amperage on 12v you should worry about. And the quality of course.

I think mine is 52 amps

I didn't see you had the exact PSU lol.

This PSU destroys. It has solid ripple suppression, and can even deliver up to ~1060 watt when needed.

Efficiency rating is from 85% to 81%; even at 1060watt usage it is still at 80%.

Also it doesnt seem to flinch with load balancing (relativly speaking). You can put stress on any rail you want.

The fact that this PSU is bronze rated is beyond most reviewers' knowledge.

You should be more than fine!

ratings are overrated :)

You can end up with a fried PSU even if it has a certification or guarantee, what's better to do is to research through user and professional reviews and not through brands reccomended by every budget builder out there.

So true.