Acer 721TX Service Guide - Page 25

System Memory Item Supported memory size per DIMM Supported maximum memory size Supported DIMM type Supported DIMM Speed Supported DIMM voltage Supported DIMM package DIMM Memory Combinations Specification 16/32/64/128 MB 256MB (128MB x 2) Synchronous DRAM SDRAM: With SPD without parity 3.3V 144-pin DIMM Slot 1 16MB 0 0 0 16MB 16MB 16MB 16MB 32MB 32MB 32MB 64MB 64MB 128MB Second-Level Cache Slot 2 0 16MB 32MB 64MB 16MB 32MB 64MB 128MB 32MB 64MB 128MB 64MB 128MB 128MB Total Memory 16MB 16MB 32MB 64MB 32MB 48MB 80MB 144MB 64MB 96MB 160MB 128MB 192MB 256MB Item Cache controller Tag RAM location Tag RAM size Tag RAM voltage SRAM type SRAM size SRAM location SRAM configuration SRAM speed Specification MTXC IMM 32K*8x1 3.3V PBSRAM 256K/512K IMM 32K*64 or 64K*32 Cycle time = 7ns Chapter 1 17