cantgiveup
It not that you need to replace your fan it's just that you mention how noisey it is so one solution as mentioned is to fit a larger and quieter unit.
Of course it won't be a direct replacement, the one you have is much smaller but what we are proposing is one of the step down fan mounts that is 60mm on one side and 80mm on the other (like a funnel) this plastic (or metal) mount first screws onto the heatsink instead of your existing fan, then a new 80mm fan screws on the larger 80mm mount side.If you go for this option you need to by an 80mm fan with an air movement rating above 30CFM (best around 35)it ideally needs to be the same 3 wire fan header type as a normal CPU fan so it plugs into the CPU fan header.
This is just a thought only, if you can put up with the noisey ThermalTake fan then thats fine.
Martin
Replying helps further our knowledge, without comment leaves us wondering.