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Appendix C
Heat and Power Consumption
Temperature Ranges
The following values are ambient temperatures inside the computer case.
The board temperatures reflect the 80486 CPU Heat dissipation
requirements because it will be the hottest component. Temperature
specifications vary with the CPU frequency.
Frequen
Humidity
The recommended humidity range for operation of the American Megatrends
Super Voyager VLB-III motherboard is 20% to 80% non-condensing.
Appendix B Upgrading Cache Memory
120
Heat
cy
Sink
20 or
NO
25 MHz
33 MHz
NO
50 MHz
YES
66 MHz
75 MHz
YES
486DX4
100 MHz
YES
486DX4
Airflow
Airflow
over
over
CPU
other
compone
nts
400
Not
feet
critica
per
l
minute
400
Not
feet
critica
per
l
minute
200
Not
feet
critica
per
l
minute
200
Not
feet
critica
per
l
minute
200
Not
feet
critica
per
l
minute
Maximum
Ambient
Temperatur
e
47 ° C.
36 ° C.
50 ° C.
65 ° C.
65 ° C.
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