Is This 40mm CPU Fan Good Enough

Discussion about old PC hardware.

Is This 40mm CPU Fan Good Enough

Postby GabrielKnight123 » 2018-10-11 @ 14:37

I have a Pentium 200MHz with MMX for a socket 7 motherboard and the original fan is 50mm but I cant find any Noctua or similar in the 50mm range so I have a 40mm Noctua NF-A4x10 FLX fan that I am not using the yellow wire so its running at 12 volt all the time but the 40mm fan doesn't quite fill the heat sink all the way would this fan be good enough?

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Re: Is This 40mm CPU Fan Good Enough

Postby tayyare » 2018-10-11 @ 15:07

For a Pentium MMX, it will be just ok I believe, we were using tiny teeny little fans back in the days anyways.

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Re: Is This 40mm CPU Fan Good Enough

Postby Koltoroc » 2018-10-11 @ 15:13

I guess it should be fine but I would try to get a proper sized fan.

Unfortunately 50mm fans are not that common anymore and most are too loud for my taste. Here are 2 50mm fans that are reasonably quiet.

Noiseblocker NB-BlackSilentFan:
https://www.blacknoise.com/site/en/products/noiseblocker-it-fans/nb-blacksilentfan-series/50x50x10mm.php?lang=EN

Fractal Design Silent R3 50mm
http://www.fractal-design.com/home/product/casefans/silent-series-r3/silent-series-r3-50mm
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Re: Is This 40mm CPU Fan Good Enough

Postby konc » 2018-10-11 @ 17:01

yeah come on, I would replace any 90s 5cm fan with a 4cm noctua anytime
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Re: Is This 40mm CPU Fan Good Enough

Postby GabrielKnight123 » 2018-10-11 @ 17:19

It might be me but thats a double negative im not sure when you were saying something is right, but is a 40mm noctua good to you?
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Re: Is This 40mm CPU Fan Good Enough

Postby realoldguy23 » 2018-10-11 @ 17:47

A P200MMX has a TDP of around 14W. This is really not a lot. If the ventilation in the case is good it could also work without any fan. I would be more worried that this little fan would be quite noisy.
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Re: Is This 40mm CPU Fan Good Enough

Postby konc » 2018-10-11 @ 18:54

GabrielKnight123 wrote:It might be me but thats a double negative im not sure when you were saying something is right, but is a 40mm noctua good to you?

If you're referring to my post then most probably it's me since I'm not a native speaker. Using different words: I'm sure a modern noctua 4cm fan is better than a 90s 5cm one.
(although you don't need something better or even equally performing for this CPU...)

btw and again, if you were referring to my post, where's the double negation? Honest question, eager to improve my English.
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Re: Is This 40mm CPU Fan Good Enough

Postby Eleanor1967 » 2018-10-11 @ 19:47

realoldguy23 wrote:I would be more worried that this little fan would be quite noisy.


I also got one of those 40mm noctuas in my 486 @ 12 Volt and they are audible, but nothing you could call loud.
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Re: Is This 40mm CPU Fan Good Enough

Postby GabrielKnight123 » 2018-10-12 @ 12:04

Hi Konc when you said "yeah come on, I would replace any 90s 5cm fan with a 4cm noctua anytime" it to me was like saying - "yeah right, I would anytime", when someone says yeah right thats saying "I disbelieve that fact" with a hint of sarcasm and the "I would.....anytime" was not clear enough to know if that statement was a part of the first statement. But also your statement is clear and in full taken as true I guess it can be taken both ways it depends on the person reading it. English has some confusing grammar at times.
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Re: Is This 40mm CPU Fan Good Enough

Postby SW-SSG » 2018-10-12 @ 17:41

@OP: That fan should work just fine, even if it may look awkward.

konc wrote:... Honest question, eager to improve my English.

Your original post reads like something a teenager might write on Twitter. Aside from the fact that you've confused the OP, emulating social media-speak or SMS-speak is hardly the best way to improve your English; actually spending some time to write clearly-worded posts (which you are capable of doing, given the content of your second post) is better.
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Re: Is This 40mm CPU Fan Good Enough

Postby sunaiac » 2018-10-18 @ 07:02

Doesn't the 60mm noctua fit on a 50mm HS ?
I think it has 50mm space between screws.
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Re: Is This 40mm CPU Fan Good Enough

Postby pentiumspeed » 2018-10-19 @ 01:57

Nidec, Sanyo/San ace, Delta, NMB, YS Tech are all quality fans and many are ball bearing fans and can be had from ebay rather easily and can be 10 each and long wait. 40mm and 50mm do exist there.

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Re: Is This 40mm CPU Fan Good Enough

Postby 0kool » 2018-10-20 @ 08:59

Most of the old school fans (Pentium and earlier, many graphic cards<=GF4) I've came across are in fact 45mm, not 50mm. And those 45s are hard to find. 50s fortunately are plenty and in the most cases fit well enough (and so do 40s). Recently I did a similar procedure on my Pentium machine with this:

DSC_0575.jpg

Quite satisfied.
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Re: Is This 40mm CPU Fan Good Enough

Postby JodieC » 2018-10-20 @ 21:13

These fans have a dead spot under the hub anyway. I wouldn't sweat it.
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Re: Is This 40mm CPU Fan Good Enough

Postby StevOnehundred » 2018-10-21 @ 01:35

realoldguy23 wrote:A P200MMX has a TDP of around 14W. This is really not a lot. If the ventilation in the case is good it could also work without any fan...


My daily runner for several years was a fanless 233mmx. The Packard Bell case was fanless too, other than the one in the psu.
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Re: Is This 40mm CPU Fan Good Enough

Postby 0kool » 2018-10-21 @ 07:08

Well, often manufacturers like Dell and HP (to give a few) considered PSU fan to be enough for those low TDP (and sometimes not that low) desktops (and even towers in some instances). But nowadays it's better to be safe than sorry with these machines.

Speaking of low TDP, recently I downgraded my fanless (PSU is above the processor so it's supposedly sucks the heat out, it's fan was replaced by a decent Arctic Cooling solution) DOS HP Vectra VL5 desktop from MMX to P133 specifically to keep it nice and cool. Yet it was acting out from time to time, until I mounted a fan on the CPU heatsink. So go figure..
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