Reading the NV5 reviews suggests that Arctic Cooling NV4 fansinks on my 5800s will make them nearly silent. The advertized 0.9 sone is way better than the 56dB dustbuster... However, the picture on the website shows the rear-of-card RAMsink is very thick compared to the other NV series coolers (probably to compensate for the DDR-II on the 5800).
This makes me wonder whether the NV4 will fit in a SFF that has only 24mm between the agp slot centerline and the HD cage. Anyone with the NV4 care to measure the rear-of-card aluminum RAMsink for me?