i have a HP p7-1037c computer and i am using a Bestec ATX-250-12Z-D7R psu that has 250watts which is weak! i want to know is using a different brand of psu with different specs is ok to use with my pc or do i have to use that same model of psu, i wanted to buy like a 400watt startech psu if i don't need to use a replacement psu of bestec 400 watt psu because i heard bad things about bestec power supplies. Is a different brand or model of psu going to have the right adapters on it to use right away on my pc. I keep thinking there are didn't adapters on all atx power supply units so i am not sure if others are compatibie with my pc, help please! I want this psu for to use with a HD 5670 2gb video card i plan to purchase soon! any ideas what i should do?