Alright so I am planning on buying a new GPU for my 3 years old custom PC, due to old one having a burn. Got a 600W PSU and Z87 Extreme4 ASRock motherboard, 16 gigs of ram and a i5-4590 cpu. I've came across the ASUS Dual RX 480 8GDDR5 gpu for a price, a bit too cheap for such a graphics card -...