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SpeedGeek · 11 August 2015, 14:47

Overclocking the A3000 is always a case of "Your Mileage Will Vary". But most A3000s can manage 30MHz with Fast RAM (at least 70ns) and timing mods (e.g. CLK90, replacing the 74F08 with 74AC08).

Beyond that, SDMAC will begin to lock up and you risk overheating the SMD 030. But you can still overclock the FPU past 30MHz with cut and jumper mods (if it's the 68882 up to 50MHz).

Good luck!

P.S. There are 2 versions of SDMAC (02 & 04). Most have the 02 version and only a very few have the 04 version (usually A3000Ts). The 04 version may have some timing improvements which help with overclocking (but unfortunately it's not been confirmed yet).

11 August 2015, 14:47	#3
SpeedGeek Moderator Join Date: Dec 2010 Location: Wisconsin USA Age: 60 Posts: 841	Overclocking the A3000 is always a case of "Your Mileage Will Vary". But most A3000s can manage 30MHz with Fast RAM (at least 70ns) and timing mods (e.g. CLK90, replacing the 74F08 with 74AC08). Beyond that, SDMAC will begin to lock up and you risk overheating the SMD 030. But you can still overclock the FPU past 30MHz with cut and jumper mods (if it's the 68882 up to 50MHz). Good luck! P.S. There are 2 versions of SDMAC (02 & 04). Most have the 02 version and only a very few have the 04 version (usually A3000Ts). The 04 version may have some timing improvements which help with overclocking (but unfortunately it's not been confirmed yet). Last edited by SpeedGeek; 12 August 2015 at 14:53.