Macintosh 512K Macintosh 512K

Macintosh 512K Datasheet

On September 10, 1984, Apple introduced the Macintosh 512K, a personal computer that would go on to become a staple in the Macintosh series. The Macintosh 512K was designed, manufactured, and sold by Apple from 1984 to 1986, and at its launch, its price started at $3,195.

The Macintosh 512K featured an 8 MHz Motorola 68000 processor, a 9″ monochrome display, 512 KB of RAM, a 400 KB floppy disk drive, and a dedicated operating system: Macintosh System Software. This computer was a significant step forward for Apple, as it marked the beginning of a new era in personal computing.

Macintosh 512K was similar to the Macintosh 128K. The main difference between these two was the amount of RAM memory built-in in both Macs. Macintosh 128K has 128 KB of RAM while Macintosh 512K has 512 KB of RAM. It was a massive difference at the time. On Mac 512K users could load more data into memory from the floppy disks.

However, the Macintosh 512K’s time in the spotlight was short-lived, as it was discontinued on April 14, 1986. It was replaced by the Macintosh 512Ke, which offered some slight upgrades and improvements. Today, the Macintosh 512K is 39 years old, and although it is no longer in production, it remains a significant piece of technology history.

Macintosh 512K
Source: – Macintosh 512K

Macintosh 512K Details

IntroducedSeptember 10, 1984
DiscontinuedApril 14, 1986
Model Identifier2
Order NumberM0001W
Original Price$3,195
Weight16.5 Ibs.
7.484 KG
Dimensions13.6” H x 9.6” W x 10.9” D
34.54 cm H x 24.38 cm W x 27.68 cm D

Mac 512K Tech Specs


ProcessorMotorola 68000
Processor Speed8 MHz
Number of Cores1
System Bus8 MHz
Interleaving SupportNo


Built-in Memory512 KB
Maximum Memory512 KB
Memory SlotsNone


Graphics CardNone
Graphics ConnectionNone
Graphics MemoryNone


Built-in Display9” monochrome display
Resolution512 x 342
Pixel Density72 ppi


Serial2 – RS-422
1 – DE-9
Audio Out1 – Built-in speaker 8-bit 22-kHz
Expansion SlotsNone
Hard Drive InterfaceNone
Media400 KB floppy disk drive
Floppy Port1 – DB-19



Original OSMacintosh System Software 0.1
Maximum OSSystem Software 2.0.1
FirmwareMacintosh ROM


Backup Battery4.5 V Alkaline
Maximum Continuous Power60 W
Line Voltage110-120V AC (M0001W)
220-240V AC (M00001WP)

Macintosh on Video

Further Reading and References

Disclaimer: The data presented in this article is under continuous development and has been manually collected from various sources based on their availability. The author of this article may revise this dataset as additional research is conducted and reviewed. Please note that the information is provided “as is” and “as available” without express or implied warranties. The author cannot be held responsible for any omissions, inaccuracies, or errors in the published information. Any warranties relating to this information are hereby disclaimed.

Last updated: March 12, 2023