Right now, I'm planning on upgrading my HP Pavilion Slimline by getting an AMD Phenom Black Edition and a 256GB SSD. I knew my default PSU wouldn't work, so I was thinking of buying a 300W one. Will a 300W PSU work?
Processor: AMD Phenom Black Edition Graphics Card: GT 220
More aboutwill work
The question you need to ask is will the cpu work. Is it on HP's supported cpu's list for your specific model slimline?
Well, my motherboard IS AM3 socket.
Mine was AM3 too, but it's about the power of processor it supports. Replace it ASAP, as I caused over £200 of damages after putting my 125w CPU on the 95w HP Motherboard.