Not bad thinking at all. It's a matter of priority. I love the SonataII case, as it is nice and quiet. That is the priority for me and I am willing to give up 2 or 3 degrees of temp in order to have quiet. My Athlon64 CPU runs at about 29c idle, and about 35c under load with this case and stock cooling on the CPU. But if you want to get one that has more fan slots, I'd recommend at least making sure the case's fans are 12" fans. That way you don't have that high pitched screaming fan noise. That is a very popular case of course. If you do end up getting that one, I wouldn't recommend using that power supply. Aspire doesn't have a very good reputation for PSUs. If you love that case, then I'd just take out the PSU that comes with it, and put in something more reliable. Here is an example of a very high quality, reliable power supply: http://www.newegg.com/Product/Product.asp?Item=N82E16817103931 Yes, the 7900GT is a faster GPU than the 7800GS. Close, but not quite. That is the socket 939 version of the CPU, but you will want the socket AM2 version. I just checked newegg again, and I am still not able to find them there. Out of stock already maybe? It was JUST released a few days ago.