Timefalls - Gaming and encoding (well, photoshop filters a lot) are what i mainly use my rig for, so will be getting used heavily. And when not running that am either Folding or Seti crunching, so pretty much maxed out on CPU time.
Creed - if the Noctua's do what they are suppsed to do, then see it as a good investment.
Yuri - Sorry but wont be able to report back on the cooler until late december as am away from teh UK with work until then. Have used watercooling before and the temps from it are good. Went back to air after my last upgrade as when i reseated the waterblock, it developed a hairline crack in the acrylic casing that didnt sho as a leak until 3 days later. Cunnigly, i had been away with work for 2.5 days of that, so ended up with a very fried mobo. Fortunately, the GFX card and CPU are still going strong