Hi all, I plan to upgrading my New iMac from 1G to 4G. Jest buy 2x Mushkin DDR-26400 2GB 800MHz SO-DIMM Ram but the Ram is NOT working in my new Mac. After put the in and can not turn on the computer. I am using 2.4GHz Intel Core 2 Duo 20-inch iMac(MB323LL/A). Does Corsair DDR2 800CL5 work? Any recommendation?