.

Here's the review, and here's the manufacturer's page (archive)

Note that they claimed that only their own "modified" G4 ZIFs would work properly.

I see XLR8 also recommended that part as a dual G4 upgrade for PCI Macs, using their MAChCarrier (archive)

Mmm. A 9600 with twin G4s would be nice }

These days? Rare as hen's teeth. I've seen ~one~ on ebay since they were announced.

nb: XLR8 and xlr8yourmac.com are not related