Hello. Before I spend the money and send for RAM I am hoping to make sure I am ordering the correct RAM. I am going from 4GB total to 8GB total in hopes Aperture runs smoother. I am questioning this because Ram from the apple store is $200 per 4GB and the RAM I think I want is only $29.99 per 4GB. The RAM I will order ( unless wrong ) is Kingston 4GB DDR 1066MHz 204 pin part # KTA - MB1066/4G PC3 - 8500. ( I have a early model iMac 24" 2.93 GHz )Thank you.