Case + cooling

[Talrinys]

Well it's getting to the summer months now, and even though people have been telling me on other sites that it won't have an effect, the temperature on my GPU has already increased 5 degrees, and my system has been crashing a bit on the really hot days here.

I was considering getting a Tuniq Tower 120 based on the great reviews + the nice price, would that be okay?

Also i currently have a pretty huse Lian Li case, damn old one, but it's served me well. I was thiking about getting the Antec 900 case, for the extra fans + bigger size - how many degrees would this be able to get the CPU down?
It's currently running at 65 celsius, which is the max i've been able to take it while still being stable - and this is at a 2.7GHZ overclock of an E6400 with a Zalman cooler

 

[Talrinys]

Well it's under a desk, which definitely has a negative impact on it, i rolled it out a little more which is damn annoying but it actually reduced the GPU temperature 4 degrees instantly, will try removing the sidepanel
And really, it just gets extremely hot and i could imagine the top fans on the 900 helping a lot, seeing as it has plenty of space on the top which is usually cool enough, which the back on the case is placed badly and runs extremely hot.