Kingston 512MB 667MHz SODIMM DDR2 CL5
http://www.valueram.com/datasheets/KVR667D2S5_512.pdf
Super Talent DDR400 512MB/64X8 CL3 8CH Memory (PC and MAC G5) -D32PA12H $32 OBO
http://www.supertalent.com/datasheets/184%20PIN%20256MB%20512MB%20Unbuffered%20DDR%20DIMM%20PC3200%20ds.pdf
*call or email for other items