FP4

(1) (Floating Point 4 bits) FP4 has a 1-bit mantissa, a 2-bit exponent and 1-bit sign. Supported in the Python library, FP4 is used to reduce computational demand in AI training and inference. See AI training vs. inference and floating point.

(2) An earlier AMD laptop socket.

(3) A black and white photographic film.

(4) (Foundry Platform 4 nm) A chip manufacturing platform that differentiates between foundries. See foundry.