I see that you overclocked your cpu a lot. Could I clock mine up that much? I'm getting a i5-3570k with the asrock extreme 4 motherboard, a cool master v6 gt, and i'll be using artic silver as5 thermal grease.
Since that's a 3570K and not a 2500K, 4.5 will be a challenge, even with the V6 GT cooler, so you'll probably end up being temperature limited. If you're lucky and get a good chip, you may
get to 4.5 without a TON of heat though. We usually recommend top end cooling for 4.5 and above with 3570K's. The Extreme4 is a good board for it though.