Apple Macintosh Quadra 650

Apple Macintosh Quadra 650 was introduced in 10 February 1993 as a more expandable desktop counterpart to the Quadra 610. It used a Motorola 68040 at 25 or 33 MHz with 8MB standard; expandable to 136MB. Three NuBus slots offered substantial desktop expansion.

Three NuBus slots, full 68040 and generous memory made it a versatile mainstream professional Macintosh.

Notable Features

• Three NuBus slots offered substantial desktop expansion.
• Later 33MHz versions approached Quadra 800 performance.
• Internal CD-ROM and multiple drive positions supported multimedia use.

Historical Significance

• Three NuBus slots, full 68040 and generous memory made it a versatile mainstream professional Macintosh.
• Its place in the range reflects Apple's progression from the original compact Macintosh toward broader professional, educational and portable markets.

Collector’s Notes

• Clock speed and CD-ROM bezel identify important configuration differences
• Original keyboards, mice, storage devices and model-specific accessories help document a complete period configuration.

Specifications

Technical Information
Name	Apple Macintosh Quadra 650
Manufacturer	Apple
Launched	Wednesday, February 10, 1993
Country	United States
CPU	Motorola 68040 at 25 or 33 MHz
Units Sold
Operating System	System 7.1 through Mac OS 8.1
I/O	Video, SCSI, two serial, ADB, audio, Ethernet and three NuBus slots
Keyboard	External ADB keyboard and mouse
Storage	1.44MB floppy, SCSI hard disk and optional CD-ROM
Sound	Eight-bit mono input and stereo output
Graphics	High-resolution colour graphics depending on VRAM
Display	Built-in colour video
ROM	1MB ROM
RAM	8MB standard; expandable to 136MB
CPU Speed	25 or 33 MHz