[aclug-L] Re: FYI: Case Mods
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Jeff Vian wrote:
>Mini towers have the power supply at the top-rear. The power supply fan
>draws air from the case and exhausts it. IMO there is not adequate flow
>thru that path, and thus most cases also have space to mount one supply
>fan at bottom front and one exhaust fan at top rear, just below the
>power supply. Cheap insurance for case temperatures.
>This does leave the top front where cdrom/disk drive/ etc are mounted
>with no real air flow - just stagnant as far as flow path is concerned.
>However, on my Athalon boxes, with the 2 extra fans in place; the CPU
>temp stays at 135 - 140 and sys temp stays at about 120 with a room temp
>of 85. This is reasonable and would be lower if the room temp were lower.
>Michael Moore wrote:
>>CPU's didn't get near as hot; but, hard drives produced massive amounts
>>of heat. Many years ago I assembled a 286megaherz computer with a 410
>Are you sure you did not mean a 286 computer, instead of a 286
>The 286s were built before 386, 486, and pentiums.
Yep, my bad. Got in to big a hurry typing. It was an 80286 and I think
16Mhz or maybe slower. Remembering now, I think the harddrive was
closer to the 65megabyte range. I kept it around as a big paper weight
but finally trashed it a couple of years ago.
>>megabyte harddrive. The hard drive ran so hot that it would heat up the
>>ram memory causing the whole computer to lock up after about an hour and
>>a half of use. So, I cut a hole in the top of the case and mounted a
>>fan and it never locked up again. Also, it doubled as a nice little
>>office heater in the winter time.
>I remember those times. Lots of heat.
>>Those old hard drives were hot. They would burn your fingers.
>>Anne McCadden wrote:
>>>I have always wondered that also. The engineers know that heat rises,
>>>thus vent the top of the case. duh???
>>>Years ago, CPU's didn't get near as hot as what they do now and most
>>>people only had the computer on for a couple of hours at a time when
>>>they are using them. Customers also use the top of the pc to put their
>>>glass of ice tea or whatever favorite beverage of choice is, and some
>>>would accidentially spill into the vents or fans in the top of the case
>>>if they had them. Others put their scanner or external zip drive, ditto
>>>drive or CD-RW on top of the pc so that it doesn't clutter up their
>>>desktop. A scanner on to of the pc isn't a steady enough surface and
>>>tends to make the scanned image too fuzzy, but it is an interesting
>>>effect if that is what you like.
>>>David Carmichael wrote:
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