Dell - PSU for 4850

what kind of psu do you currently have? what is its power rating, do you know if it has a 12v line(is it a cheap manufacturers psu that doesnt have and extra wires for upgrades)?

as for what i recommend, I am a fan of seasonic or corsair psu's. they wont kill your computer, are reliable when they tell you a power rating, and they carry a lot of current down their 12v rails for a beefy video card. of course these are just two of the good brands out there, but i havent seen a crappy psu made by them. I myself have an asus 4850 overclocked with an e8400 processor overclocked as well running on a 550 watt corsair. It's probably possible to go lower as far as power rating, but you'd be safe with 550. the main things you should look for with the psu is power rating, current on the 12v line, efficiency, and that it has all the right wires to run your other hardware. idk what your budget is, but this one would go above and beyond your needs. someone with more knowledge of power requirements could help you narrow down what you need and find a better deal.

http://www.maplin.co.uk/Module.aspx?ModuleNo=260593