<div dir="ltr">Oops -- old eyes, or something... It's actually got a 4-pin connector, yay.<div><br></div><div>Also, after investigating further, the fan seems to be running reasonably well, but in a certain (alas very common) RPM range some kind of harmonic develops and the noise is... Not something you want to hear more than once.</div><div><br></div><div>Hey Alberto, I'd like to try out that fan you have. Maybe its harmonics won't drive me batty. I'll contact you shortly.</div><div><br></div><div>Kevin</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 2, 2021 at 9:36 PM Alberto Abrao <<a href="mailto:alberto@abrao.net">alberto@abrao.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
On 2021-02-02 8:56 p.m., Adam Thompson wrote:<br>
<blockquote type="cite">
<p>Oh, also, re: 3-pin vs. 4-pin, interesting page that says
"don't worry about it" (unless you want speed control): <a href="https://landing.coolermaster.com/faq/how-to-connect-a-3-pin-or-4-pin-fan-to-the-motherboard/" target="_blank">https://landing.coolermaster.com/faq/how-to-connect-a-3-pin-or-4-pin-fan-to-the-motherboard/</a></p>
</blockquote>
It is fine to leave the 4th pin flying. Most 4-pin fan connectors
allow for that, with the notches being tuned for 3-pin connection as
the 4th one may or may not be present.<br>
<blockquote type="cite">
<p>On 2021-02-01 19:23, Adam Thompson wrote:</p>
<blockquote type="cite" style="padding:0px 0.4em;border-left:2px solid rgb(16,16,255);margin:0px">
<p>IIRC, the fan depends on the CPU, the motherboard socket, and
the case dimensions/clearance. I've found a vague reference
to this fan being used on an AM3 socket, does that describe
your situation? If so, the forum poster I found replaced his
AVC fan with a "Be Quiet!" brand "<span>Shadow Rock TF2" (<a href="https://www.bequiet.com/en/cpucooler/1074" rel="noopener noreferrer" target="_blank">https://www.bequiet.com/en/cpucooler/1074</a>)
which may or may not fit your case. (And holy cow is it
ever expensive!)</span></p>
</blockquote>
</blockquote>
<p>The main thing is to keep around the same voltage and amp
ratings. It does not need to be exact, but close enough will work.<br>
</p>
<p>For CPU fans, the fan used is often dependent on the heatsink
design. OEMs also take into account other things, such as overall
heat on the case and amount of auxiliary fans. They tend to use
more powerful fans should it needs to spin faster not only to cool
the CPU, but other components as well. Lenovo/HP/Dell usually have
CPU fans on the 0.5-0.7A range, while aftermarket coolers often go
with less, opting to focus on the heatsink performance in order to
keep noise at bay - but not taking into account that they may be
needed to cool the other components, as it is often seen with OEM
designs.<br>
</p>
<p>As an example, your standard Intel Core i5 CPU can be cooled with
a paltry 0.07A fan when using a CPU cooler from Arctic. They focus
on noise management as well as cooling performance. Again, the key
to achieve that is the heatsink. <br>
</p>
<p>Another one: AMD FX-8150, known worldwide as a furnace. OEM
cooler from AMD/Cooler Master is L O U D. I am using an Arctic
Freezer 7A to cool it: 0.07A fan, 2000rpm max, but larger and with
a vertical heatsink that blows air to the back of the case. Paired
with auxiliary fans and some tuning, it runs stable and cooler
than it did when using the OEM jet engine.</p>
<p><br>
</p>
<p>None of that matters, though: he wants to replace the fan only,
so we should try to match the current one as the heatsink will be
the same, not to mention all other components that may rely on its
reserve air capabilities in case of emergency.</p>
<p><br>
</p>
<p>Kevin, if you're still looking for the fan, I have one here that
you can have and does the job.</p>
<p>12V, 0.65A, 70mm. 4-pin, but, as I said, it is fine to leave
unplugged.<br>
</p>
<p>It's yours if you need. Feel free to text/call/e-mail me to
arrange pickup.</p>
<p><br>
</p>
<p>Kind regards,<br>
</p>
<pre cols="72">--
Alberto Abrao
204-202-1778 (Landline)
204-558-6886 (Mobile)
<a href="mailto:alberto@abrao.net" target="_blank">alberto@abrao.net</a></pre>
</div>
_______________________________________________<br>
Roundtable mailing list<br>
<a href="mailto:Roundtable@muug.ca" target="_blank">Roundtable@muug.ca</a><br>
<a href="https://muug.ca/mailman/listinfo/roundtable" rel="noreferrer" target="_blank">https://muug.ca/mailman/listinfo/roundtable</a><br>
</blockquote></div>