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Help me choose a PSU?

Last response: in Components
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May 20, 2012 7:34:29 PM

I have decided on these:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Don't worry about price difference, newegg is not where I will be getting these. They are all about the same price where I will get them.

Out of these, which is best?

i5 3570k
8GB RAM
500 GB HD
Z77 Mobo
A few LED fans

More about : choose psu

a c 164 ) Power supply
May 20, 2012 7:38:24 PM

all are overkill if you are not using a video card but in order of best to worst

1A - seasonic
1B - XFX (which uses the same seasonic platform)
2 - while the seasonic and xfx are more neck and the neck in quality, the corsair CX series is more of a budget line. solid for the price but not the same quality as the units above.
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May 20, 2012 7:40:57 PM

No vid cars atm, meaning to add that in. A 7850 will most likely be put int later.
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a c 164 ) Power supply
May 20, 2012 10:26:59 PM

JackNaylorPE said:
Well using newegg pricing, I'd get this one:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

That's 200n extra watts for a 750 watter with a $20 off w/ promo code XFX518B, ends 5/24 and a $15 rebate and it will easily hable the addition of a 2nd 7850 at a later date.


he said he won't be purchasing off newegg so newegg pricing & MIR are pointless
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a b ) Power supply
May 20, 2012 10:33:52 PM

Seasonic is the best of the bunch. XFX is based on the same unit but is slightly lower in quality but still good. The CX is a budget oriented line which is good for its price but not equal in quality to the other two.

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May 20, 2012 11:24:08 PM

I have a Seasonic 620W 80+ certified for an older backup gaming rig that was the main gamer at one time (overclocked E8400 -> 4.4GHz, GTX 275 SLI). It has absolutely been flawless with all those components. As others have referenced, Seasonic's design is actually used by other PS vendors like Corsair, OCZ, and XFX. Go with the Seasonic.

You may want to look into spending a little more and get a higher wattage supply for future upgrade options. The 12v single rail number is important to keep an eye on for certain video card requirements. My original PS for the above backup gaming rig was a Corsair TX850 purchased over three years ago. While overkill at the time, and a little more costly than the 600-750W I could have gotten by with, it's now in my current gaming rig running fine and still has headroom (overclocked 2500k -> 4.83GHz, GTX 680, soon to be SLI when I can get another).

Finally, power supplies do degrade in performance over time and lose efficiency, but the higher quality you buy up front, the less this degradation will occur over time.
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Best solution

a c 158 ) Power supply
May 20, 2012 11:53:12 PM

I have the Seasonic M12II 520W and love it. Rock solid rails, quiet, 5yr warranty and modular. Enough for any single GPU system and OC; it is definitely sufficient for your planned 7850 GPU.
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May 29, 2012 6:55:34 PM

Best answer selected by RockNRollz.
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