On 13 Jul 2016 08:31, "Charles Steinmetz" <csteinm...@yandex.com> wrote:
> An external fan blowing on the heatsink keeps my 5370s nice and cool, for about $10 each. So more noise. > *if the counters were operated 24/7/365*. I sometimes take data for a few months straight, but very, very far from 24/7/365 on average. So for me, break-even would be more like 50 years. I don't suppose Poul's main motivation is to reduce his electric bill. > Speaking of fan noise -- you can't really get away with replacing the internal fan with one that moves less air, so it is hard to find a replacement that generates significantly less noise. If you find one, please share the make and model -- all 5370 owners would love to know. > > Best regards, > > Charles Surely one of the main advantages of the SMPS route is the higher efficiently means less cooling air is required. That means less noise. I often here of people replacing fans with quiter ones, but I suspect that all they really do is reduce the airflow. I believe that most of the noise one hears is the movement of the air. From what I have read, sleve bearing fans make a bit less noise than ball bearings fans. However, although the MTBF of both types is similar at 20 degree C, the MTBF of sleve bearing fans decreases quite a bit with only a modest increase in temperature. Dave. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
