we've seen pictures of your humidor, of you smoking.....lets see your pc/desk

[Silencei2]

HEY, I smoke Opus X because I LOVE 'dem ceegars.

Getting back to his computer, is there REALLY a need for liquid cooling for the northbridge AND southbridge chipsets, ever for the most avid gamer who's overclocking his computer?

So I've come back as a ghost to answer your question. When it comes to watercooling, you're trying to isolate all the moving air to one spot where the radiator is. When you do that, you have little to no ambient air cooling anything inside the computer. Nowadays since the northbridge and southbridge play a major role in the performance of a computer, and most require a heatsink of sorts, it would be smart to watercool it to prevent overheating issues and create stability in the long run.