[Darthtanion]

If you're talking about "serious overclocking", then I would recommend a full blown water cooling setup and not an one piece kit. When I contacted the marketing folks at Corsair, I was told that the system uses 3/8" tubing to transfer the liquid and the pump only puts out 350 LPH. While this should be useful as a general replacement for air cooling, it won't have the potential to handle something as far along as you seem to be talking.

If you're not comfortable with building your own water cooling solution, you can still get comparable performance with kits from either Swiftech or Danger Den. Both offer a product line sold as a "kit" that are high-end components with in depth installation instructions. A bit of minor case modding might be necessary, but the cooling potential will be far greater than the Corsair product. Considering the Nautilus has a MSRP of $159, it won't cost that much more to get a real water cooler in place.

As to your concerns about other cooling devices, you'll probably do well enough with just CPU and GPU. I'd probably go with a cooling setup that includes a reservoir, though, since the higher water volume will allow the system to get the liquid back to a reasonable temperature before it begins to recirculate it.