cpu - 800 MHz DDR2 RAM shows half of memory speed on my machine - Super User
A-Tech 8GB Kit (2x4GB) Max RAM for Dell Inspiron 1440, 1545, 1546, 1750, Zino HD 400 - DDR2 800Mhz PC2-6400 SODIMM Max Memory Upgrade at Amazon.com
Does a DDR2 motherboard support 8GB RAM? - Quora
SUPERMICRO X7DGT-iNF-B 5000X/ESB2 DUAL LGA771 1333FSB FB-DIMM BULK MAX RAM 32GB DDR2-667 ECC FB-DIMM W/ 1 x PCIEx8 / 1 x INFINIBAND/ SATA RAID/ 2 x GIGABIT LAN/ USB2.0/ VIDEO SERVER BOARD