Hmm. Actually, I don't recall ever seeing a G4 L2 upgrade... I have a G3/400 and a G3/500. One is in a 6500 and the other is in my TAM. Both are really fast. They feel much faster than they should, and they (subjectively) smoke my G3 upgraded PCI Macs. I haven't done any benchmarks to figure out if my perception is accurate.

Peace,
Drew
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Power to the PowerPC!