is powercolor a reliable manufacturer for gpu,cause they're always advertising gpu for lesser price than other manufacturers like xfx,asus,sapphire etc.and they don't get much reviews.processor should be core i5
Powercolor is good enough. Here's the Temperature Data BTW
You didn't tell me and this processor will have i5 like performance when OC'ed.
Well then get a new case. I really don't see a ATX MB fitting in a mini-ATX (or ITX or whatever you have since you're not sure) case.