Transcend 1GB Memory DDR2 667 Mhz (PC2 5333), Non-ecc, Non-reg, Sodimm 200PIN, C at Amazon.com
Amazon.com: OWC 2GB (2 x 1GB) PC5300 DDR2 667MHz SO-DIMMs Memory Compatible with MacBook/MacBook Pro, iMac, and Mac Mini Models (OWC5300DDR2S2GP) : Everything Else