Deskpro M Series Memory Matrix

Note:
*Soldered to the Processor Board which is slotted in the unit.
**SIMMs install in Memory Expansion Board.

Deskpro M - Pentium Memory Features

8 MB standard soldered on processor board on Deskpro 5/60M installed as Bank 0
16 MB standard on Deskpro 5/66M (Additional 8MB soldered on installed as Bank 1)
Sockets for memory expansion are located on the processor board.
Uses parity SIMMs for upgrade. Non-parity SIMMs are not supported.
Although the base memory operates at either 70ns (5/60M) or 60ns (5/66M), the expansion memory SIMMs may be either 70ns or 80ns. If you increase memory by adding SIMMs that are slower than the base memory, the base memory still runs at the faster speed, while the SIMM memory runs at the slower speed. This support is called "mixed mode" memory. Similar to mixed SIMM sizes, if mixed SIMM speeds are installed, all four SIMMs will be accessed at the slowest speed.
The addressing scheme for these SIMMs is "symmetric". It may also be referred to as "11x11", (meaning addresses are arranged as 11 columns by 11 rows).
The Compaq memory option kits consist of four identical industry standard 70ns, 72-pin SIMMs.

Deskpro M - 386 and 486 Memory Features

Expandable to 64 megabytes with the optional 32-Bit 8-Socket Memory Expansion Board.
Uses parity SIMMs for upgrade. Non-parity SIMMs are not supported.
Uses industry standard 80 ns, 72-pin SIMMS in any order or combination