What PSU do you reccommend for this build?

Solution
Seasonic is the OEM (Original Equipment Manufacturer) for all XFX PSUs and is basically considered one of the top PSU makers. The Antec HCG series also comes from Seasonic.

EVGAs older models are not great but the recent G2 series models are made using Superflower models and are really good quality, especially for the price. I haven't done much research on Silverstone so I won't comment on them.

Basically, when you say you trust XFX, you are saying you trust Seasonic's parts/build quality.

For PSUs, it is usually more important to see who OEM is since many companies use multiple suppliers with varying quality (like corsair who use 3-4 different suppliers, some great and some bad). The reason most ppl trust XFX blindly is because they...

Rapajez

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I'd grab a 650W Gold+ PSU from a reliable brand, like the XFX P1-550G-TS3X, or the Silverstone SST-ST65F-G.

You could probably get by with 550 or less (from a reliable brand), but you'd have less headroom for overclocking and expansion.
 

numanator

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Rapajez

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Are you sure about those brands? I've heard mixed reviews about SeaSonic and EVGA, while XFX and SilverStone are pretty well regarded across the board.

Antec is another solid choice.

Some series of Corsair PSU's are good as well, but they'd be my 4th choice after the 3 above.
 

numanator

Honorable
Seasonic is the OEM (Original Equipment Manufacturer) for all XFX PSUs and is basically considered one of the top PSU makers. The Antec HCG series also comes from Seasonic.

EVGAs older models are not great but the recent G2 series models are made using Superflower models and are really good quality, especially for the price. I haven't done much research on Silverstone so I won't comment on them.

Basically, when you say you trust XFX, you are saying you trust Seasonic's parts/build quality.

For PSUs, it is usually more important to see who OEM is since many companies use multiple suppliers with varying quality (like corsair who use 3-4 different suppliers, some great and some bad). The reason most ppl trust XFX blindly is because they use Seasonic exclusively :)
 
Solution

Rapajez

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Fair enough!

Didn't realize Seasonic was the OEM for both & good to know about the G2 series.

SliverStone in general is well-reviewed between critics and user reviews, and usually are a good bang for your buck, especially w/r to ITX & modular PSUs. Apparently, the better models have "Etatis and Impervio" as the OEM? :)