I upgraded my PM8500 with a Sonnet Crecendo G3 300/1MB card recently. It runs fine, but the Apple System Profiler doesn't recognise the 1MB secondary cache. Sonnet told me to use their Metronome profiler (which I think gets installed when the Crescendo software is installed). Sure enough, the 1MB secondary cache was their, but is there some other way I can check if that secondary cache is really there or not. I'd just like third party confirmation that it really exists, even though the upgrade has boosted the machine speed without doubt.