The Quadra 650
Codename: Speedbump 650 
CPU: MC68040
CPU speed: 33 Mhz
FPU: integrated
motherboard RAM: 8 MB
maximum RAM: 136 MB
number of sockets: 4 -- 72 pin SIMM
minimum speed: 80 ns
VRAM: 1 MB (two sockets)
ROM: 1 MB
L1 cache: 8 k
L2 cache: n/a
data path: 32 bit
bus speed: 33 Mhz 
slots: 3 NuBus and 1 PDS
SCSI: DB-25
Serial Ports: 2
ADB: 1
Floppy: 1.4 MB SuperDrive
HD: 80-500 MB
CD-ROM: 2x
Display: resolutions up to 1152x870
Sound Output: stereo 8 bit
Sound Input: mono 8 bit
Ethernet: AAUI-15
Gestalt ID: 36 (Quadra)
power: 230 Watts
Weight: 25 lbs.
Dimensions: 6" H x 13" W x 16.5" D
Min System Software: 7.1
Max System Software: 8.1
introduced: October 1993
terminated: September 1994


On a personal note, a quadra 650 was my second mac. It was my dad's work machine (he was a journalist at the time, hence he used a mac) from when he brought it in late '93 until about '97. The setup had a 16" monitor, stylewriter II printer and a 14.4 modem. This was, of course, in the days of 4p per minute metered dial-up internet. After my dad stopped using it, it became my box, and was used for all kinds of geekery. I finally gave up on it in early 2000, when my dad stopped using his Performa 6400, in favour of a pee-cee (grrrrr).

Source; apple-history.com