[aclug-L] Re: FYI: Case Mods

[Jeff Vian <jvian10@xxxxxxxxxxx>]

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 
megahertz.computer.
The 286s were built before 386, 486, and pentiums.

>
>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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