[shiltz]

unless you plan on seriously OCing the board the waterblock really isn't needed for cooling, seen people OC ti4200 in the 330mhz range from their stock of I think 250 or 275 using the stock heaksink and fan, the main benifit and the reason why I went water cooled with mine is as others mentioned is the noise, those stupid little fans they put in GPU's are to damn noisy and I can't stand the high pitched wine they make, after 6 hours of gaming your eardrums would thank you for going with the water cooling, hehe.