Gold fingers cards The easy one here is what the category intends. ISA, pci, PCIe, PCIx, NuBus... etc. These are what they are. Including the 22” long PCIx cards from IBM. They have a gold finger on the long side and often external connectors perpendicular to the finger on a short side.
Server interconnection cards and modules Have a long finger on the short side. Excluding power and battery boards will also always be gold finger card class. You MUST remove ALL trays, brackets, and metal housings from these for GFC class. Above battery boards go as peripheral WITH the finger attached. Remove the batteries before shipping Gold finger power boards should have a photo posted. They range from mid grade to peripheral
Gold finger data bus cards These will have 4 or more gold pin connectors on the card, a gold finger, and a gold pin external connector. Multi channel sata, scsi, and sas, cards often jump to telco.
Shunts, terminators Small cards; gold finger, no ICs and a bunch of copper coils or ferrite towers on the card. Peripheral with the finger attached.
Bridges Two gold fingers, a bare board in between, nothing on them. Short ones under a few inches, and/or with complete length fingers are clean gold fingers. Long ones, 5 inches or more, are gold finger cards
Multi layer fingers. As you noted, includes slot processors, memory boards, etc. Almost always better than GFC class.
Ram is self explanatory
Computer Motherboards, Trim the fingers
Server motherboards Larger than 12x12 Post a photo
Everything else post a photo.
Gold may be atomically light, but it’s molecularly heavy so don’t be discouraged. Fingers add up fast.
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