Pentium II 266 without Fan?
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Pentium II 266 without Fan?
Hi there.
I spend some time yesterday building up some systems from stuff I have lying around and ended up with a Pentium 2 system (among others). the Fan of the PSU (an old ATX PSU propably 200W or something) starts *really* quiet, but gets really(!) loud after the system has reached the windows desktop and stood idle for a minute or two.... so well I'll just rip it out and put a Papst 8412N/2GL in there and power it @ 7 or 9V some time... maybe even 5?
But what annoys me more is this damn little CPU Fan... a nastly litlle 40mm Fan. i tried running it at 7V, but this one has really bad bearings, so this doesn't really solve the problem.... maybe a GlobalWin FA420 @ 7V would be enough? Currently that's not an option though, since I need my only FA420 on my main system's graphics card.
So, long story short:
Is it save to run the P2 266 completely without a fan (usual P2 all-plastic enclosure - your everyday black aluminium slot1 heatsink) or would it be better (read: necessary) to have a 80mm Fan around it somewhere?
I spend some time yesterday building up some systems from stuff I have lying around and ended up with a Pentium 2 system (among others). the Fan of the PSU (an old ATX PSU propably 200W or something) starts *really* quiet, but gets really(!) loud after the system has reached the windows desktop and stood idle for a minute or two.... so well I'll just rip it out and put a Papst 8412N/2GL in there and power it @ 7 or 9V some time... maybe even 5?
But what annoys me more is this damn little CPU Fan... a nastly litlle 40mm Fan. i tried running it at 7V, but this one has really bad bearings, so this doesn't really solve the problem.... maybe a GlobalWin FA420 @ 7V would be enough? Currently that's not an option though, since I need my only FA420 on my main system's graphics card.
So, long story short:
Is it save to run the P2 266 completely without a fan (usual P2 all-plastic enclosure - your everyday black aluminium slot1 heatsink) or would it be better (read: necessary) to have a 80mm Fan around it somewhere?
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Probably. From CPUs ranked by noise (in http://www.silentpcreview.com/modules.p ... =31&page=1) "Early P2 with less efficient core difficult to cool quietly, as power dissipation is 35-43W. With slow performance, not much incentive. 20/7/02"better (read: necessary) to have a 80mm Fan around it somewhere
That black pastic casing traps a lot of heat too...
Darklord,
My PII 266 (@300Mhz) has been running fanless for a few months without problems. The fan and associated plastic were removed to expose the heatsink, the motherboard sits in the open (no case), the ambient temperature is 80-85F (I like my place warm and cozy, plus it saves on AC bills).
The reasoning was that it is a secondary PC used as an MP3 Server + download / Kazaa client often running non stop so it would be useless if not silent. The CPU dying wouldn't be a big deal as it is essentially worthless, the important data is backed up on another PC.
Maybe you could try it and check the CPU heatsink temperature for a while?
My PII 266 (@300Mhz) has been running fanless for a few months without problems. The fan and associated plastic were removed to expose the heatsink, the motherboard sits in the open (no case), the ambient temperature is 80-85F (I like my place warm and cozy, plus it saves on AC bills).
The reasoning was that it is a secondary PC used as an MP3 Server + download / Kazaa client often running non stop so it would be useless if not silent. The CPU dying wouldn't be a big deal as it is essentially worthless, the important data is backed up on another PC.
Maybe you could try it and check the CPU heatsink temperature for a while?
Pentium II 266 without Fan?
Why not? I had a Packard Bell 350mhz Pentium II which came stock with a huge heasink and no fan. Ran great for several years and I sold it when I upgraded to a P4 at 2.6 mhz
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I've recently looked inside two old Gateway PII-based systems. One has a PII-233 with a noisy (at least now) 40mm fan on the heatsink, but the other has a PII-350 with a large fanless heatsink. If I recall correctly, both systems have a power supply with a bottom 92mm fan (not hard-mounted!) under a duct that partly covers the CPU and heatsink, ensuring some airflow.
From erols/chare : well, you have many P2 266 : 16.8W (stepping 6-5-2), 19.5W (6-5-0), 38.2W (Klamath).MikeC wrote:Probably. From CPUs ranked by noise (in http://www.silentpcreview.com/modules.p ... =31&page=1) "Early P2 with less efficient core difficult to cool quietly, as power dissipation is 35-43W. With slow performance, not much incentive. 20/7/02"better (read: necessary) to have a 80mm Fan around it somewhere
That black pastic casing traps a lot of heat too...
If you're at 17W max, no problems
For me, I have a PII 400 (24.3W) running fanless with large heatsink & airflow from the PSU 80mm output fan (same period).
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I picked up a number of old P2s from my old workplace. 233, 266, 300, 333. All of them were "fanless". Some of the heat sinks were quiet large. They all came from Dell or Micron and had either an 80mm or 92mm case or PSU fan blowing or pushing air near them. I even have a couple dual p2-266. They have a 80mm exhaust fan with a shroud to keep the air passing over the HS.
The probelm is finding a large HS like these and then replacing the old one. I know that all of the HS on the ones I got were placed on with rivets.
The probelm is finding a large HS like these and then replacing the old one. I know that all of the HS on the ones I got were placed on with rivets.