Everything looks good but that. Since you plan on running a 4870x2 you'll want a bigger case. Those cards are 11'' long. Also, what kind of DDR3 running @ 1333? Not all ram is created equal. Any reason for going with a Q6600? I'd get something higher up personally. What's the purpose of this setup?
Wow!, What a configuration. I like all the information which is mentioned by you about Intel Core2 Quad CPU Q6600 @ 3.40GHz . I think this is a good thing for keep keep knowledge about technology.