If you look at my screenshot from MacBench, you can see the results for two frequencies (@16M and @40M; the CPU was always at the default 16M). 40M gives a slight boost to the benchmark score. The card itself has a jumper to configure which clock to use (OSC means the oscillator on the card, SYS is using the C16M signal from the logic board which is 16M).
I am currently working on a derivative of this design that would support the 50 MHz part 68882. It's a PGA, which is the only major difference between it and the rest of the 68882 series. The only reason is "because". Sort of like most of the projects for 68k Macs.
Any good place to get one of these assembled? A Classic II recently came into my possession and I'm interested in giving it toys, but my soldering skills are pitiable.
Any good place to get one of these assembled? A Classic II recently came into my possession and I'm interested in giving it toys, but my soldering skills are pitiable.
I realized I still have two units of my original batch that I planned to sell (but the thread disappeared in the forum crash) - if you're interested just shoot me a PM!
I sourced some genuine one from local auction sites with NOS chips. Alternatively the ones from China (Ali/eBay) even though potentially remarked, work pretty reliably and cool for me