The newer Quadras had the addition of interleaved RAM, as well as an enhanced video system and SCSI bus.

[3] The Quadra 950 was replaced by the PowerPC-based Power Macintosh 9500 in June 1995, with sales continuing until October.

[4] It was the last Macintosh Quadra sold by Apple, and one of the last 68k models to be discontinued, due to its high RAM capacity and large number of NuBus slots.

[1] The 950 includes a key to limit access to various subsystems depending on the computer's use environment.

[5] The Workgroup Server 95 models include the "Workgroup Server PDS Card", which provides three capabilities: Two SCSI controllers with two internal SCSI connectors (plus one external connector); a DMS SCSI control chip that reduces I/O load on the main CPU; and 128 KB of SRAM which is used as an L2 cache.