RichB93 wrote on 2020-10-09, 22:23:
Necrodude wrote on 2020-10-09, 22:15:
A friend of mine gave the cpu 3.3 volts and did the 4x multi mod and the cachemod. The cpu died after 2 days at the end of a retro lan party.

The cpu wont last long at 3.3 volts

Thanks for the heads up - I'll stop using it until I can find a way to get the voltage down. Not sure how easy it'll be however 🙁 Just so odd because if the chip isn't getting hot, where is the energy going? It just doesn't make sense.

I found this formula for calculating cpu wattage

P=V^2*C*f

where:

p=cpu wattage. Acording to cpu world the typical load is 4,5 watts

https://www.cpu-world.com/CPUs/Pentium/Intel- … FV80503266.html

V=cpu voltage V^2=means cpu voltage X cpu voltage

C=cpu capacitance ( we dont know this one)

F=Cpu frequency in mhz. The tillamook has a frequency of 266mhz.

We dont know what the capacitance is. So lets calculate it.

P=V^2*C*f

4,5=(1,9*1,9)*C*266

4,5=3,61*C*266

4,5=960*C

1/C=960/4,5

1/C=213,3911111111

1/213,39=C/1

C=0,0046862308 farad

know we know C.

We can now change the voltage and see the typical wattage with a vcore of 3.3volt

P=V^2*C*f

W=3,3^2*0,0046862308*266

W=10,89*0,0046862308*266

W=13,5747 watts typical load.

In not entirely sure if I did calculate this 100% correct. But I think it is somewhat correct

A normal pentium mmx has a typical load of 9.6 watts and a maximum load of 21 watts at 2,8volts vcore

https://www.cpu-world.com/CPUs/Pentium/Intel- … BP80503233.html

So a typical wattage at 13.57watts at 3.3 volts dont sound that far off