It may be a power supply issue. If the 12V+ rail is
poorly regulated.. the pitch will vary due to changes
in FAN speed.
Maybe you should fit a better PSU/FAN to your case to
solve the issue.
Regards
John
Secret Squirrel wrote:
..snip...
> The following components all make noise:
>
> - power supply fan
> - video card fan
> - second case fan (doesn't apply to me)
> - hard drive ("idle" hum and r/w ticks)
> - CPU fan
In all cases, a better quality fan will usually solve
the problem.
There
is also variation in fans, so swapping in another fan
may lower the
noise level.
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