Originally Posted by dembo1305
Thats probably right.. The RX240 has a thicker radiator than the RS240. Therefore it can cool things off a little bit better! Dunno that i can hold one of those though
I agree. The RX series is roughly 45% thicker than the RS series (63mm vs. 35mm/2.5" vs. 1.4"). I have plenty of space top inside on my HAF 922 so I may just go with the RX all out and use standard fans (25mm thick). Am looking into "possibly" using 55mm fans at low speeds. I believe air flow will be improved and noise reduced at low speeds (by means of a fan controller) but need to read up more on that point. I am just thinking out loud here...
In your case, you may be able to look at the RX BUT consider thinner fans (20mm). I am no expert on air flow and such, but I do know that FrozenCPU has a wide selection of fans that vary in their thickness as it is. See here
and I guess compare CFM's and such until someone with more knowledge chimes in for us.
That being the case, and the RX series working better with lower CFM fans (supposedly - that's why I am looking for additional comments on this), then it just might be that in your case you could go with the RX with thinner fans and avoid space issues. Maybe posting a picture of the inside of the case showing where you think about placing the radiator might help others to give you better insight.