Hello, yay! finally got the gaming pc woohoo but is it good or do i need to upgrade some more? heres the specs processor - i3 2100 @3.10ghz motherboard - gigabyte z77x-d3h graphics card - 2x crossfireX sapphire HD7850 OC edition RAM - 8gb corsair vengeance 1600mhz HDD - WD 500gb PSU - Cooler Master GX 750 Bronze Casing - Corsair Vengeance C70- (arctic white)