Inspiron 580 Power supply

phaedrus2129

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The Ultra LSP you're looking at is probably worse than the power supply you already have. The Inspirons usually have Delta or Lite-On power supplies, and their reliability is usually much higher than that crappy RSY-built thing.

What's the PSU currently present? If it's a 300-350W with a decent +12V capacity than it can probably support most mid-range GPUs just fine, given a molex-PCIe adapter.
 

Dimensions of your existing PSU should be 5 1/2" L x 5 7/8" W x 3 3/8" H.
 

phaedrus2129

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Hipro are alright. The reason you don't hear about these companies--Delta Electronics, Lite-on, Bestec, Hipro, etc, is because they manufacture almost exclusively for major companies, in ginormous quantities for use in low-end PCs. They're better than the whitebox junkers you may get at a mom&pop store for $20 or off ebay, but not up the standards of a high end enthusiast unit.

Anyway, the Ultra LSP series are garbage. Avoid them.

What GPU are you planning on getting, and what's your budget?
 

phaedrus2129

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I'm actually about to install a 5770 into an HP Pavilion that has a 350W Delta power supply, and I have full confidence that it will work.


A 5750 *might* work for your situation. Hipro aren't quite as reliable or overengineering as Delta, but still pretty decent. Assuming you have at least 20A+ (240W+) of combined +12V capacity you'll be fine with a 5750. Should be on the label somewhere.