Hello, I have an iMac 20'' 2.66GHz 2GB RAM (early 2008 - MB324). I want to upgrade for 4GB RAM. Crucial memory is a good idea? Will it work well? See specs below: Module Size: 4GB kit (2GBx2) Package: 200-pin SODIMM Feature: DDR2 PC2-6400 Specs: DDR2 PC2-6400 CL=6 Unbuffered NON-ECC DDR2-800 1.8V 256Meg x 64 Thank you so much!