INFINEON HYS72T128420HFD-3S-A 1GB SERVER DIMM DDR2 PC5300(667) FULL-BUF ECC 1.8v 2RX8 240P 128MX72 6 at Amazon.com
CMS 8GB (2X4GB) DDR2 5300 667MHZ ECC Fully BUFFERED DIMM Memory Ram Compatible with HP/Compaq Workstation Xw8600 Series Ddr2-Pc5300 Fb for Server Only - B54 at Amazon.com
Komputerbay 8GB (2x 4GB) DDR2 667MHz PC2-5300 PC2-5400 SODIMM CL5 200-Pin 1.8v Unbuffered - Komputer Bay
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Komputerbay 2GB (2X1GB) DDR2 667MHz PC2-5300 PC2-5400 (200 PIN) SODIMM Laptop Memory with Samsung semiconductors - Komputer Bay
Kingston KVR667D2Q8F5/4G 4GB Server DIMM DDR2 PC5300(667) Full-BUF ECC 1.8v 4RX8 240P 512MX72 128mX8 at Amazon.com
MICRON MT9HTF12872AZ-667H1 1GB SERVER DIMM DDR2 PC5300(667) UNBUF ECC 1.8v 1RX8 240P 128MX72 128mX8 at Amazon.com
GeIL DDR2 Value Series - 1GB(2x512MB) PC5300 667MHz Dual Channel Kit at Amazon.com
Samsung 1GB PC5300 ECC DDR2 FB at Amazon.com
OWC 4GB PC5300 DDR2 667MHz SO-DIMM Memory Compatible with MacBook (Late 2007/Early 2008), MacBook Pro (Mid/Late 2007, Early 2008), & iMac (Late 2007) Systems with Core 2 Duo Processor : Everything Else - Amazon.com