256MB, 512MB Unbuffered SODIMM SDRAM SDRAM Unbuf.
Samsung
M464S6754BTS - SDRAM Unbuffered SODIMM
256MB, 512MB Unbuffered SODIMM SDRAM SDRAM Unbuffered SODIMM 144pin Unbuffered SODIMM based on 512Mb B-die 64-bit Non ECC Revision 1.2 March 2004 .