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Commodore A3640 for A4000 - Upgraded to 33mhz & Rev 3.2
I have just picked up a Cyberstorm MKII so my A3640 processor card is up for sale. It's no ordinary A3640 - the CPU has been replaced with a 33mhz processor instead of the stock 25mhz one, and the crystal holder has been socketed so you can switch between 25 and 33mhz at will. It also appears to have been upgraded to rev 3.2 (I didn't do the upgrade, but you can see the timing fix has been done.) I have used it for many hours and it has been completely stable at both speeds, you can see SysSpeed photos below for the difference in performance between the two crystals. Please note it is fully working but is 20+ years old so sold without warranty (obvious I know but just in case...)
Complete with both 50mhz/66mhz crystals, heat sink, and fan. Ready to go.
PRICE: £125 plus shipping and Paypal fees. Happy to post anywhere at cost.
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