air cooler overclocking

I'm about to buy a Deepcool Assassin III, but before that, i'm trying to find a RGB equivalent, is there one? Or at least, close to the performance of the Assassin III. My RAM is quite tall (49 mm), so some coolers may be problematic to install or even Impossible. Only air coolers please. CPU...

i recently build an x58 chepset based pc and here is my config CPU : Xeon X5675 @ 3.07 Ghz Motherboard : Msi X58 pro-e Cpu Cooler : Antex a40 pro (Air cooler with 8 heat pipes and one fan) Ram : 8 GB ddr3 @ 1600 GHZ (but it's running on 1033Ghz) Gpu: Zotac GTX 1060 6gb i'm new in overclocking...