Hi. I'm going to build my first desktop that's basically for gaming, I will need some advice on choosing the best hardware that's for gaming and my first time overclocking. CPU: intel core 2 Q9950(heard u can overclock to 4ghz) Motherboard: asus P5Q3(heard this motherboard have easy overclocking system and can OC very good) GPU: maybe hd4870 2x, or 2 of hd4850 or 2 of hd 4870 (which of them do u suggest?, but I think the hd4870 2x fit the asus P5Q3 motherboard more) Memory: Corsair ddr3 4gb 2x2 1600mhz or OCZ Platinum 4GB (2 x 2GB) DDR3 1600. If u suggest another one which one would it be? Case: Antec twelve hundred (I heard this case is very good for gaming and got nice cooling system but I have doubt, if this will fit with the motherboard and if it will actually have enough space for later maybe will do a quad crossfire?) Hardrive: 500gb seagate sata 2(maybe 1tb or 2 of those 500gb going to check the prices between them) PSU: 750 or 1000 watt? (so which PSU should I use for this rig? and does the PSU helps overclocking better if the PSU have more watt?) Have a nice day thanks in advance .