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How many watts needed?

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  • Components
Last response: in Components
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August 21, 2014 1:08:21 AM

Hey,

I am entirely changing my build and need a new PSU as well, but I have no clue how many watts I need.
This is my future build:
NZXT Phantom or Switch 810 (a full tower case, may be a different one)
Asus Crosshair V Formula
AMD FX 8350 Black Edition
AMD R9 290(X)
Corsair 8 GB Vengeance Ram
Noctua DH-14 (Or would a Hyper 212 evo be enough?)
Samsung Evo SSD 500 GB
WD 2 TB
Another 128 GB SSD
I will be most likely getting a XFX or Seasonic PSU, how many watts should I get though?

More about : watts needed

August 21, 2014 1:12:58 AM

That FX-8350 is going to bottleneck your R9 290 or R9 290X in many games, even overclocking heavily won't save it in some. I'd recommend an i5-4690K for that caliber of video card. Pairing a $500+ GPU with a $160 CPU is just silly - there's no such thing as an AMD CPU strong enough to keep up with either the R9 290X or GTX 780 Ti in every game.

A good Seasonic or XFX 650W power supply would be enough. 750w if you want to overkill it.
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August 21, 2014 1:36:29 AM

I don't think the bottleneck would matter too much in the newer games at 1080p at least. You'll more or less still be around the 60fps+ area. If you're going about the pricing of a cpu, then you could argue that pairing it up with a cpu that's 20$ more expensive wouldn't do it much justice either since you'd be looking at a i5 4460 @180$, but it's still an i5. The performance between the fx 8350 and i5 isn't horribly giant in a game. I don't think the r9 290x would be bottlenecked in newer games as much as something that is super single threaded heavy like skyrim.

Answring the PSU question:

What rationale said.

If you're overclocking and want plenty of headroom for future addons like hard drives or more ram or fans or whatever, a nice 750w would probably be a nice thing to have.

A good 650w would be minimum for overclocking.
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