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Politics : Formerly About Advanced Micro Devices
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To: Paul Engel who wrote (33783)7/1/1998 11:49:00 AM
From: Ali Chen  Read Replies (3) of 1574005
 
Paul, <"maximum dissipation" ...I know exactly what it means - turn on the power>
Yeah, Paul, it is clear that you are just a retired
woodworker and not an engineer...

I can try to help you again.

Look at K6-2 specs at
amd.com
P.238 says: K6-2-300 typical power is 10.35W,
and "maximum thermal power" is 17.2W,
where
"Typical power is determined for the typical
instruction sequences or functions associated
with normal system operation"

Now what is the AMD definition of "maximum thermal power"?

Looking at Page 13 of Appnote
amd.com ,
you may find out:

"A software utility has been developed to assist in testing
thermal solutions. This utility executes a tight loop of
instructions whose addressing and data have been defined to
put the AMD-K6 processor in a state that dissipates the
maximum thermal power."
...
"The program executes in an infinite loop. While executing, the
processor's case temperature can be measured. In addition, the
actual power dissipation should be determined by measuring
the voltage and current supplied to the processor."
"The max_pow.exe and ex.exe utilities are available under a
non-disclosure agreement. Contact your local AMD sales office
for information."
-----------------

So, if your analytical abilities are not exactly zero, you
may conclude that the special AMD "maxpower test" draws
about 170% of normal power. The "maxpower" conditions
never happen in real applications for any significant duration
of time but are provided for pure technical reasons to assist
in designing reliable systems, mostly for secondary power
supplies (for details of switching power supplies
you may consult with John Wang-"Traveler" please :).

Hope this helps.

PS. <In fact - put a thermocouple on the CPU and
measure the case temperature.> You tell me:)
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