iMac RAM Model ID 8,1 DDR2 800Mhz
The DDR2-800Mhz based iMac Intel has 2 slots with a maximum of 6GB max. DDR2-800 Memory Upgrade iMac models are also known as the iMac Early 2008.
RAM for iMac 2008: Ramjet uses a non-stacked module for the DDR2-800 module for the iMac. The cheaper stacked IC variety of SO-DIMM draws more power, which increases heat and can cause increased errors. Ramjet ONLY uses premium non-stacked chips.