Archived from groups: alt.comp.periphs.mainboard.shuttle (
More info?)
Kevin Collins <kevin.collins@gmail.com> wrote:
> "Eric Parker" <eric.parkerthedross@virgin.net> wrote in message news:<c600aj$6a6ku$1@ID-228217.news.uni-berlin.de>...
>> I've built half a dozen SN41G2's with 2400+.
>> I think they all do that sometimes.
>> I find it distracting sometimes like the noise the wind makes blowing
>> through a gap.
>> There is a replacement "silent" power supply which I haven't tried, but I
>> believe there still is some noise.
> Ahh.. so it's the PS. Ok, I was worried the system was flaky but if
> it's common I will probably leave it alone. Yeah, it can be
> distracting but I can deal with it. Considering the workstation case I
> had before this was designed for the old PIII Xeons (which ran pretty
> hot) and had fans that sounded like a Boeing wind tunnel testing a
> jumbo jet, I can live with the Shuttle.
Well, the PSU fan is rather noisy, but it could also be the speed up/speed
down feature on the CPU fan that is designed to deal with hot CPUs. In the
BIOS, you'll find a setting that speeds up the CPU fan when the CPU is
hotter than a certain temperature. Once the CPU cools off below that
temperature, the fan speeds down. If your BIOS setting is right around the
average operating temperature of your CPU, that could be the cause of the
variable fan noise. If it's the variation more than the volume that
bothers you, set the speed up temp a few degrees lower for a hopefully
cooler CPU. If both volume and variation bother, try setting it a few
degrees higher, but don't be suprised if it starts happening again and
your CPU runs hotter.
My personal solution for the fan noise was to put my Shuttles inside a
desk cabinet that was designed to hold a mid-tower case. It's open in the
back, so plenty of air circulation, but there's a door in the front that
blocks most of the noise from reaching me.
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