Apple Macintosh Quadra 605

Apple Macintosh Quadra 605 was introduced in 21 October 1993 as the smallest and least expensive Quadra, sharing much of its hardware with the LC 475. It used a Motorola 68LC040 at 25 MHz with 4MB standard; expandable to 36MB. Very slim enclosure shared architecture with the LC 475.

The model brought 68040-class performance to a compact professional badge and was also sold through related LC and Performa configurations.

Notable Features

• Very slim enclosure shared architecture with the LC 475.
• 68LC040 could be replaced with a full 68040 for floating-point support.
• LC PDS provided networking and specialist expansion.

Historical Significance

• The model brought 68040-class performance to a compact professional badge and was also sold through related LC and Performa configurations.
• Its place in the range reflects Apple's progression from the original compact Macintosh toward broader professional, educational and portable markets.

Collector’s Notes

• Model badges distinguish it from visually similar LC and Performa versions
• Original keyboards, mice, storage devices and model-specific accessories help document a complete period configuration.

Specifications

Technical Information
Name	Apple Macintosh Quadra 605
Manufacturer	Apple
Launched	Thursday, October 21, 1993
Country	United States
CPU	Motorola 68LC040 at 25 MHz
Units Sold
Operating System	System 7.1 through Mac OS 8.1
I/O	Video, SCSI, two serial, ADB, audio and LC PDS
Keyboard	External ADB keyboard and mouse
Storage	1.44MB floppy and internal SCSI hard disk
Sound	Eight-bit mono input and stereo output
Graphics	Up to 1152 x 870 colour depending on VRAM
Display	Built-in colour video
ROM	1MB ROM
RAM	4MB standard; expandable to 36MB
CPU Speed	25 MHz