The Apple custom ICs that are newly designed for the Quadra 950 computer are:

- BATMAN: a custom IC (replaces the Apple Sound Chip) that acts as a sound amplifier

- SPORTY: a custom IC that provides sound output functions

- CABOOSE: a custom processor that manages system power, the real-time clock, and parameter RAM

- DAFB (Direct Attach Frame Buffer): an IC that connects directly to the system bus and controls the video RAM or frame buffer

- ORWELL: a custom IC that connects to the system bus and controls burst-mode data transfers to the main RAM

- JDB (Junction Data Bus): one of two ICs making up the I/O Adapter, connecting the data signals from the system bus and the I/O bus

- RELAYER: one of two ICs making up the I/O Adapter, controlling the bus buffers and proving bus arbitration logic

- YANCC (Yet Another NuBus Controller Chip): a custom IC that controls the NuBus interface

Third-party ICs include:

- SCSI interface ICs: two NCR 53C96

- Sonic: the DP83932 Ethernet controller IC made by National Semiconductor

- Two VIAs similar to those in earlier members of the Macintosh II family

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