Archived from groups: alt.comp.hardware.homebuilt (
More info?)
On Wed, 5 May 2004 10:47:38 +0000 (UTC), "Kevin Lawton"
<socks.kepla.shoes@btinternet.com> wrote:
>We Live For The One We Die For The One <Mr fred@yahoo.com.au> wrote:
>| Ny Vantec is Quiet but not silent not anoying but ok, still want less
>| noise though.
>
>The Vantec seems to be an interesting engineering solution and I'm looking
>forward to trying one out. I reckon that the fan design will be good as a
>case intake fan also.
Thermally controlled fans aren't too good for case intake, generally to
change RPM they need significantly higher than ambient temp. Too often
that's the problem with any thermally controlled fan, their RPM to temp
response isn't very good.
>I've read some reviews of the ThermalTake SlentBoost and I am surprised by
>their claim that the 'vented' fan cage is able to give quieter running. I
>would have expected it to increase turbulence so I guess it is another one
>I'm going to have to try.
Basically what it does is increase air intake area. not a huge difference
and perhaps not even significant on a heatsink since that design would
tend to recirculate slightly more of the 'sink exhaust air.
>Interesting is the fact that Panaflow rate the
>bare fan as 28 dbA, though ThermalTake quote 21 dbA. I would have thought
>that coupling the fan to the heatsink would increase the noise level, not
>reduce it.
Major fan manufacturer's specs can be believed but Thermaltake (as with
most low to mid-range product manufacturers) seems to intentionally
deviate from industry standard measurement to produce deceptive (false)
information. It's bad enough when manufacturers claim noise level only
based on what the fan would produce in free air instead of mounted on the
'sink, but Thermaltake goes one step worse in their spec.
>I guess the low noise levels are acheived by having a fan which
>only runs at 2450 rpm - certainly the not-so-good cooling, even with a
>copper heatsink, would bear this out.
That is Panaflo's mid-speed fan. As with noise levels you may find "some"
fans' specs with false, padded airflow numbers. That fan on any decent
mid-range heatsink is enough to cool an Athlon XP3200. That fan on a
high-end heatsink is enough to cool any Socket A chip as high as it can be
reasonably overclocked. The non-vented Panaflo M1A version I have has
been cooling a T'Bred @ 2.5GHz for almost a year.
Panaflo fans really are the best choice out there unless you absolutely
MUST have thermal control. M1A isn't loud enough to be too concerned
about it though, and if noise is really that much of an issue there's
always the L1A, low speed version.
>Also, from its shape, I'd imagine that
>it might not be too easy to mount and dismount. With so many m/boards
>placing the CPU quite close to the PSU in a standard tower case I think this
>can be quite important.
>At least we have a choice.
>Kevin.
Better to have a big 'sink and fan that's harder to mount than a small
'sink that's easy... shouldn't be needing to mount/dismount it too often
anyway. It fits within AMD's keepout zone so it should always fit on a
board... main issue would be if socket lugs are positioned on top and
bottom of socket rather than sides, in which case it's a lot easier to use
a custom tool to attach the 'sink clip (like a bent screwdriver). The
right tools can really make a difference, make it safter and save a lot of
time.
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