Spicy_benie :
i have it but i don't have the graphics card
the case is awsome i think you should put ur 10 foot pole away?
I've used cheap cases like that on builds - they are usually very poorly constructed, lack cable management, and have terrible air flow. With cases you get what you pay for, and the cheap cases I've used have caused nothing but problems - overheating issues, temperature read errors, you name it. If you think it's awesome - fine, but I'm just telling you my experience. I'd suggest reading this guide before setting up that case:
http://www.tomshardware.com/reviews/cooling-airflow-heatsink,3053.html
As far as the PSU goes - you should probably return it as Sapphire and MSI both recommend a minimum of 550W for a 7850, it's a good GPU, but your PSU will be a bit underpowered should you decide to use it: http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1160&pid=1499&psn=000101# . They say 500 but that doesn't take into account case, fans, motherboard and CPU, drives, etc.