TITLE
    Performa 640 DOS Compatible: Adding Memory (8/95)
Article ID:
Created:
Modified: 		18524
8/31/95
08/31/95
TOPIC


    I would like to upgrade the memory in my Performa 640 DOS Compatible computer, for the computer itself and the DOS card. How do I do this?

DISCUSSION


    Different RAM Expansion Slots
    -----------------------------
    The Performa 640 DOS Compatible computer ships with 8 MB of on-board memory and is expandable to 52 MB (for 68040 mode). This is achieved by installing one 32 MB SIMM in the double-sided slot and 16 MB in the single-sided slot. (The dimensions for each slot are printed on the logic board.)

    It is possible to have other configurations greater than 8 MB and less than 52 MB. One must remember however, that the single-sided slot must always be half the value of the double-sided slot. For instance, a 16 MB SIMM can be inserted in the double-sided slot and an 8 MB SIMM in the single-sided slot.

    DOS Card Memory
    ---------------
    The plug-in DOS card ships with 4 MB of RAM and is expandable to 32 MB. The DOS Card contains 1 SIMM slot. The upgrade is achieved by removing the 4 MB SIMM and installing (at the largest) a 32 MB SIMM.


    Support Information Services

Document Information
Product Area: Computers
Category: Macintosh Performa 200 through 640 Series
Sub Category: Macintosh Performa 640
Keywords: supt, hts

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