Quote:Still haven't looked into the cooling.
You should be fine with the Antec case. Just add couple of 120mm (1000rpm) fans into it. One fan in front for intake, and 2 fans on the rear/top for blowing out the hot air. The Antec might already include some fans, did the product description say anything about it?
Quote:And RAM- I think it is triple channel?
Those 3x2GB's will be - on the motherboard you selected.
Quote:One more: If I have ARMA2 do I just need to get OA?
Yep, then just get standalone OA.
Quote:Also, will the soundblaster be much of an improvement for sound - or is it unnecessary?
It gives you better sound quality for sure, stick with the Titanium..
With the other parts there's not much difference. Only the SSD: see if you can find OCZ Vertex 2, Intel X25 or G.Skill Phoenix. If not, then take Corsair rather than A-RAM.