661-3592 1GB SDRAM, PC3200-DDR400, DIMM, 184-Pin, A1047 - PowerMac G5 Early 2005 NB-5342W
This is a single 1GB DDR PC3200 DIMM chip. This is for use in desktop systems, and is not a SODIMM chip like laptops use.
Apple part number: 661-3592
Compatible models: A1047
661-3592 1GB SDRAM, PC3200-DDR400, DIMM, 184-Pin, A1047 - PowerMac G5 Early 2005