Iv'e noticed that 3dfx always used 3-pin fans on their cards, but i can't find info about the third pin anywhere.

If anyone has any idea what it does, lemmi know.

wrote on 02.11.04 at 17:12:08:

Iv'e noticed that 3dfx always used 3-pin fans on their cards, but i can't find info about the third pin anywhere. If anyone has any idea what it does, lemmi know.

Well it *should* be for fan rpm as all fans I have seen with 3 wires that is what the 3rd wire is for.

Cool, time to research the stuff they put there..

IMHO, this has no function.

But since it costs money to physically have an unneeded 3rd Connector and wiring removed from a stock product (which by default has it) designed to be sold in masses to contractors, they just left it 'as is' I guess.

could be, but there might be some kind of a register or a fully active sensor on board that no one knows of [except the 3dfx engineers, i suppose] that can be enabled by a few bios hacks here and there..

EDIT
But then again, i can be chasing a dead horse here..