Can be accelerated using Newer Technology's 128K slotless "Cache 040‚Ñ¢" card, part # 7CC128A-33 for the Quadra 650, part # 7CC128E-33 for the Centris 650.
Can be accelerated with Newer Technology's "MacClip”, part # 7MC040-SC. The world's smallest Macintosh accelerator.
The Centris 650 can be accelerated using Newer Technology's 50 MHz "Meteor™", part # 7QD-A. It can also be accelerated with Newer’s 50MHz "Meteor+™", part # 7QDP-A.
Some Centris/Quadra models have either 4MB of RAM or 8MB of RAM soldered on the motherboard.
Four SIMM sockets. Upgraded with one SIMM at a time.
Requires 80ns memory or faster.
Memory can be interleaved for approximately 10% faster RAM access. For the fastest speed, sockets 1 & 2 or 3 & 4 should contain the same capacity SIMM.
This computer comes with 1024K ROMs and an Apple 1.44MB SuperDrive.
Serial Port with the phone icon supports synchronous modems, with handshaking on both output and input supported.
Sound output is 8-bit stereo.
This computer has an international power supply.
This Mac contains an 040 Processor Direct Slot (PDS).
