Xlr8yourmac heeft een artikeltje gepost over het overclocken van de G3. Dat het mogelijk is om een G3 te oc'en was al langer bekend, nu hebben ze ook uitgevogeld hoe het voltage van de proc omhoog gekrikt kan worden. Het resultaat is een G4-400 op 500MHz:
I was able to increase the clock speed to 473MHz (95.5MHz bus x 5). My machine simply would not boot at 500MHz. I then tried sticking my PCM and heatsink in the freezer for a few minutes. With no fans blowing on it (since that would just have heated things up faster) I was able to run at 500MHz for about 12 seconds before the machine crashed. (Note that you shouldn't do this a lot since if nothing else, the condensation can potentially damage things.)
Last night, I did some more soldering. I moved the resistor in R4 over to R5 for a core voltage of 2.4V. Since then I've been running at 500MHz stably (so long as the cache is running at 5:2 or slower). I have a single 2" cpu fan blowing on my heat sink. The machine immediately dropped into OpenFirmware when I tried booting at 519.7MHz (94.5x5.5). I didn't bother with 550MHz. I'll see over time how stable this setup is. I've not been running it at this speed/voltage for very long yet.