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Buying New Rig, Worried About PSU

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Last response: in Components
April 26, 2009 8:10:39 PM

Intel DX58SO motherboard
Intel Core i7 920 "Nehalem" S1366 2.66GHz 4.8GT/s 8MB L3 Cache
Kingston 6GB PC3-10600 Kit (3x2GB) DDR3-1333
LG 22X DVD+-RW Drive SATA (Black)
Western Digital Caviar Green 1.0TB SATA-II 3.5" 32MB
Asus Radeon HD 4870 Dark Knight 1GB PCIe
Antec New Solution NSK6580B Super Mid-Tower w/ Earthwatts 430W PSU

So this is what I've ordered. The default system had 3GB of RAM, a 640 GB Caviar Blue 16 MB HD, and the 512 MB version of the 4870. I tried asking this question on the Gamespot forums and got called a "noob", so I figured I should come here. Is the Earthwatts 430 enough for this setup? I know if I wanted to Crossfire this setup then I'd need more, but for now will this work?

More about : buying rig worried psu

a b ) Power supply
April 26, 2009 8:33:01 PM

You could do with more. I'd suggest a 550W-600W Unit from a good manufacturer.
April 26, 2009 9:24:44 PM

Should make the grade if you don't overclock anything. But i'd go with a higher powered better brand model myself,i've had really bad luck with Earthwatts psu's.
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a c 246 ) Power supply
April 26, 2009 9:29:34 PM

A single 4870 video card will use about 155 watts and 13 amps at load.

Two 4870 video card operating in dual Crossfire mode will use a combined total of about 295 watts and 25 amps at load.

If you do some overclocking then the rest of the components will use about 350 watts during a heavy gaming session.

If you are on a budget, then your best bet would the Antec Earthwatts 500 watt power supply. Here is a link to a technical review over at

Currently available at for $79.99 and shipping is free:

If you have another $15.00, then you can get the Corsair VX 550 watt power supply which is a high quality psu. It has a single large +12 volt rail rated at 41 amps. Here is a link to a technical review over at

Currently available at for $94.99 and shipping is free. There is a $20.00 mail-in rebate which would eventually bring the price down to $74.99:

The Corsair is a much better deal all around.
a b ) Power supply
April 26, 2009 9:32:54 PM

The EA430 should be able to handle it, but it only has 1 PCIe connector. You'd be better off getting a PSU which has 2, such as the Corsair mentioned above.
April 27, 2009 12:42:43 AM

Thanks for the input, everybody. What I'm hearing is that it should do the job as long I've got a single card in there and I don't overclock anything (I wasn't planning to anyway), but it's preferable to get something with a bit more juice. I'll see if I can change my order around.