I am about to buy a new graphics card (EVGA 01G-P3-1460-KR GeForce GTX 560 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card) and a new power supply (SeaSonic S12II 430B 430W ATX12V V2.3/EPS12V 80 PLUS BRONZE Certified Active PFC Power Supply) for my "DX4860-UB33P" but im not sure if they will fit into my case or if I need anything els for it like a cooling system or something. Im also buying these for gaming so if you could tell me if its a good idea i will gladly appreciate it. Thanks!
Gateway DX4860-UB33P looks to be a standard tower case....should have no issues with an ATX power power supply. Personally, I would upsize your power supply to 500-550W. EVGA recommends a 450W PS for this card. If you plan to twin this card, you would need even more.
A 430 is definitely pushing it. That card draws quite a bit of juice itself. And if you throw any other card readers or have several dvd drives involved, you might need the extra hundred watts. 550+ is what I recommend.