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2. Macintosh 512K - Wikipedia

   en.wikipedia.org/wiki/Macintosh_512K

   Mac 512K back panel. The Macintosh 512K is a personal computer that was designed, manufactured and sold by Apple Computer from September 1984 to April 1986. It is the first update to the original Macintosh 128K. It was virtually identical to the previous Macintosh, differing primarily in the amount of built-in random-access memory. The ...

3. Macintosh Color Classic - Wikipedia

   en.wikipedia.org/wiki/Macintosh_Color_Classic

   The display is capable of supporting up to thousands of colors with a video memory upgrade. A slightly updated model, the Color Classic II , featuring the Macintosh LC 550 logic board with a 33 MHz processor, was released in Japan, Canada and some international markets in 1993, sometimes as the Performa 275.

4. Macintosh Processor Upgrade Card - Wikipedia

   en.wikipedia.org/wiki/Macintosh_Processor...

   The Macintosh Processor Upgrade Card can bring a 68k Mac, that can normally only go up to Mac OS 8.1, to be upgraded to Mac OS 8.6 or newer as long as the card is always in use. If the user turns off or disconnect the card, the machine will display a Sad Mac as newer versions of Mac OS aren't compatible with 68k processors.

5. List of Mac models grouped by CPU type - Wikipedia

   en.wikipedia.org/wiki/List_of_Mac_models_grouped...

   The 68020 has many improvements over the 68000, including an instruction cache, and was the first Mac processor to support a paged memory management unit, the Motorola 68851. The Macintosh LC configured the 68020 to use a 16-bit system bus with ASICs that limited RAM to 10 MB (as opposed to the 32-bit limit of 4 GB).

6. iMac (Intel-based) - Wikipedia

   en.wikipedia.org/wiki/IMac_(Intel-based)

   The iMac's processor selection saw a significant increase. The Intel i-series chips are introduced to Mac for the first time on the higher-spec 27-inch models. Default RAM has also been increased across the iMac range. With the advent of the larger screens, Apple doubled the number of memory slots from two to four.

7. Classic Mac OS memory management - Wikipedia

   en.wikipedia.org/wiki/Classic_Mac_OS_memory...

   While the Mac OS memory model, with all its inherent problems, remained this way right through to Mac OS 9, due to severe application compatibility constraints, the increasing availability of cheap RAM meant that by and large most users could upgrade their way out of a corner. The memory was not used efficiently, but it was abundant enough that ...