The rosewill challenger won an award for being cheap and as they handed it the award they wished they had enough money in the budget for an Antec 300 because the challenger was made of cheap plastic and thin metal
Today antecs budget case is the Antec ONE , The CM 430 elite is another option but doesnt have front usb3
The coolmax psu is junk .
and even at 1080p resolution its unlikely you will get the most benefit from crossfiring two cheaper cards . Buy a single radeon 7950 . The gigabyte windforce is quieter and cooler than the rest