abhijith

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Dec 18, 2008
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I want to buy the HD4850 palit version which has a dual slot cooler. I was wondering whether my power supply would be good enough as buying the card along with power supply will be too costly. I have a Umax 450W power supply which came with the case. It has 25A on the single +12V rail.I also have an AMD phenom 9550, 250GB HDD, 2 case fans and a DVD writer. I don't want to OC the graphics card or the processor.
 

abhijith

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The problem is I don't think that I can spend my money on a PSU at the moment. I am going to spend it all on the card.
 
Assuming that the specs on your PSU are honest, and it really can deliver 25A continuous on the 12V, then yes, you'll be OK, at least temporarily. You can't ever be sure though, on those low budget PSUs.
 

IH8U

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You'll blow the PSU, and pretty much anything connected to it. your CPU, and RAM may, I say again may be useable. 1 in 50 chance to be able to re-use.

Always spend the most on 2 things: 1. the power-supply, and 2. the motherboard.
 
You say your PSU came with your case. Chances are excellent that it is a POS and will NOT be able to reliably power a 4850, possibly dying in the process. When cheap PSUs croak, they usually take other parts with them. This PC Power & Cooling PSU, http://www.newegg.com/Product/Product.aspx?Item=N82E16817703017 , is a mere $50, and is 80+ certified. An Antec Earthwatts 430, http://www.newegg.com/Product/Product.aspx?Item=N82E16817371006, is $55. Either of those should be good; personally I'd buy the Antec because I have had only positive experiences with this specific product (and any Antec PSU I've bought over the last few years).
You would be much better served by dropping back to a 4830 if you have to in order to afford to replace your PSU.