How do I overclock a Takky?
Assuming you don’t have a G3- or G4-based upgrade card in it, and you don’t have the Macintosh Processor Upgrade in a 63x/58x-based Takky, there are three main ways. The 63x/58x boards can be overclocked using Marc Schrier’s procedure. While he claims the 580 cannot be clock-chipped, my experience says the boards are substantially similar (if not identical) across the 58x and later 63x machines, so I see no reason why this wouldn’t work. If anyone has access to a 580 and a 63x-series desktop, I’d be curious to try an overclocked board in each and see if there are any problems. The x200-series boards can be overclocked using Takashi Imai’s procedure. Expect to see at best about 90 MHz or so, but the procedure isn’t entirely clear as to whether the 22.5 MHz crystal oscillator is added or is already on the board. If it’s a part you have to add, I wouldn’t be too surprised if something as high as 25 MHz might work (end speed of 100 MHz with the 4x multiplier). If anyone can confirm details
