Fandt det her ved IBM
(4) The IBM ThinkPad 600 notebook is also designed to recognize up to 288 MB of addressable memory in the models with the new Mobile Pentium II processors at 266MHz or 233MHz. It is designed to recognize up to 256 MB of addressable memory in the models with the 233MHz Pentium processor with MMX technology. Current available memory options allow memory expansion up to 160 MB using two 64MB SDRAM SO DIMMS in the two available slots for memory expansion. Memory expansion beyond 160 MB will depend on the availability of memory options larger than 64 MB SDRAM SO DIMMS built to IBM ThinkPad specifications. Such availability cannot be guaranteed.
På denne link
http://www-306.ibm.com/pc/support/site.wss/document.do?lndocid=LWIK-3TQG38Hvis du vil vide mere så brug denne link.
http://www-306.ibm.com/pc/support/site.wss/document.do?lndocid=LWIK-3RUQGSKingston har også oversigter, de vil nemlig gerne sælge til alt muligt.