There are 667MHz, 800MHz and 1066MHz Green Series DDR2 modules from GeIL, the first two have 5-5-5-15 timings while the latter one runs at 6-6-6-18. All modules use a voltage of 1.6GB, they are available in 1GB and 2GB single channel kits, and 2GB and 4GB dual channel kits. Specifications:
GG21GB667C5SC - 667MHz 5-5-5-15 1GB Single Channel Kit GG22GB667C5SC - 667MHz 5-5-5-15 2GB Single Channel Kit GG22GB667C5DC - 667MHz 5-5-5-15 2GB (1GBx2) Dual Channel Kit GG24GB667C5DC - 667MHz 5-5-5-15 4GB (2GBx2) Dual Channel Kit GG21GB800C5SC - 800MHz 5-5-5-15 1GB Single Channel Kit GG22GB800C5SC - 800MHz 5-5-5-15 2GB Single Channel Kit GG22GB800C5DC - 800MHz 5-5-5-15 2GB (1GBx2) Dual Channel Kit GG24GB800C5DC - 800MHz 5-5-5-15 4GB (2GBx2) Dual Channel Kit GG21GB1066C6SC - 1066MHz 6-6-6-18 1GB Single Channel Kit GG22GB1066C6SC - 1066MHz 6-6-6-18 2GB Single Channel Kit GG22GB1066C6DC - 1066MHz 6-6-6-18 2GB (1GBx2) Dual Channel Kit GG24GB1066C6DC - 1066MHz 6-6-6-18 4GB (2GBx2) Dual Channel Kit