Yeah, well... why? I bet it costs $175 per 512MB stick and $200 per 1GB stick. Plus, it's still not good for your Ram's lifetime and the chips themselves to run that hot. Also, last time I checked G. Skill HZ Ram was DDR2 1000 with 4-4-4-5 Timings... DDR2 1200 with 5-5-5-15 and an ugly cooler, I think not. If you want DDR2 1200 water cool it, if not, get good DDR2 800 or 1000 Ram and leave it stock.
Sorry if I'm all negative; it's not your fault, good find though.
Nasgal: The HZ DDR2 1000 could do that easily with 2.45v and I won't be suprised if your DDR2 800 Ram could do it as well with adiqute cooling.