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