First post, by pewpewpew
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- Oldbie
This is a curiosity rather than a worry.
From the P5TX-Bpro manual,
The CPU voltage specification should also be provided in information from the manufacturer or vendor. Standard Pentium CPUs are single voltage. MMX Pentiums are dual-voltage. You should set the CPU Voltage jumpers according to the specifications you get with the CPU.
But then the board only has JP3 for "CPU Core Voltage"...
From the MMX datasheet,
Parameter--Min--Nom--Max
VCC2--2.7--2.8--2.9
VCC3--3.135--3.3--3.6
So... what were you supposed to do on a single-voltage board? It's not like those ranges overlap.
FWIW I use 2.8 on my MMX200 and accidentally had it at 3.2 during benchmarking without trouble. The chip doesn't seem to care. But if Intel went through the trouble of introducing dual-voltage with the MMX then it must mean something.