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Recommend me a Reliable, Affordable, and Efficient Power Supply for my

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December 1, 2011 10:08:21 PM

On my new build, my 750W PSU and one of the two 6870's arrived DOA. I have sent in the 6870 for a replacement, and the 750W for a full refund. Currently, I'm only using one 6870 - the same specs below, just with ONE 6870. With my current 550W OCZ Faility PSU, I have experienced NO problems; even when everything is on 100% load. Six hours of Skyrim, two hours of rendering, it runs perfectly smooth.

This is my build which the power supply will be powering:
i7-2600k overclocked to 4.5ghz (Hyper212+ Cooler, doesn't go over 65C under 100% load after 30 minutes)
TWO Radeon HD 6870 1GB in CrossFire
16GB Corsair DDR3 1600 RAM, high performance profile
Antec Three Hundred Illusion Case
GIGABYTE GA-Z68XP-UD3
120GB Corsair Force 3 SSD
640GB 7200RPM "generic" Western Digital drive (nothing special here)

I want to be able to power the above build, and I want to power it with clean, efficient, and good energy; not some crappy PSU which provides my expensive components with inefficient and "dirty" energy, killing the components overtime.

I also want surge protection, but that's pretty standard nowadays. My power strip has it, also. I'm always making sure.

Now, onto the PSU, here is what I NEED:
Wattage: Probably at least 750W. This build is ran fine by 550W - and another 6870 is not going to add on 200W.
Price: $70-$100. May go over $100, but not by TOO much.
Website: Newegg
Brands of favor: Corsair and OCZ. My Corsair RAM and SSD have given me absolutely ZERO issues. My 550W OCZ PSU is running amazingly well - but, my old 750W OCZ PSU failed after two years of hardcore usage. Expected; it was only $65 and I got more than enough usage out of it.
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a b ) Power supply
December 1, 2011 10:28:36 PM

I looked at your choice; I don't like it as it splits the 12v rail into 4 separate units. A large single 12v rail might be better.
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December 1, 2011 10:31:37 PM

o1die said:
I looked at your choice; I don't like it as it splits the 12v rail into 4 separate units. A large single 12v rail might be better.


I don't know much regarding PSUs, so I'm lost here when it comes to rails and what-not.
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a c 147 ) Power supply
December 1, 2011 11:00:58 PM

Colton127 said:
I don't know much regarding PSUs, so I'm lost here when it comes to rails and what-not.

Your dual 6870's require a 600w psu with 4 6 pin pci-e connectors.
http://www.amd.com/us/products/desktop/graphics/amd-rad...

The important metric for a gaming psu is the total amperage it can deliver on the +12v leads. Not the wattage.
The OCZ Fatal1ty 750W you linked to can deliver 54a which is a bit substandard for the wattage. It should be 62w.

A similarly priced Antec earthwatts 750w green can deliver 62a. at a similar price.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Another would be the PC Power and Cooling Silencer 760W 62a.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Here is a XFX XFX PRO750W XXX Edition for a similar price. Semi modular, and silver rated efficiency. 62a.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


OCZ is ok quality. My short list of quality psu's would include Antec, Corsair, XFX, Seasonic, and PC P&C.
A quality psu will deliver it's power continuously, not just at peak. It will do so at 50c. the temperature inside a case, not 20c which is what cheap units do.
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December 2, 2011 3:43:18 PM

Since you're going Crossfire...This is what I would choose for your budget. It's a bit more than what you want to pay. Believe me..if you're going to pay that much for your computer components..you don't want to cheap out on the Power Supply.

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

Personally, I have the Corsair AX1200 for Crossfire.
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