You can upgrade upto 8GB with 0MB non-removable base memory and 2 memory slot
Machine name: Sony VAIO VGN-Z899GRB
CPU options: Intel Core 2 Duo (2.53GHz) Processor
Chipset: Intel GM45 Chipset
HD Bus: SATA 2.5"
Front Side Bus options:
Memory Speed options: PC3-8500 DDR3-1066 204pin SDRAM SODIMM
Special notes: Maximum configurations require a 64-bit operating system
Maybe this can help www.memoryx.net/vgnz899grb.html
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