So my new iMac is on the way with 1 512MB DIMM from Apple, but I'm thinking of adding another 512MB DIMM so I can have an even 1GB and dual channel. Can anyone who has the new iMac tell if the CAS latency needs to match for the memory to run in dual channel mode? Also, I was looking at the following RAM: Manufacturer: Corsair <---Corsair Value Select, if that makes a difference Speed: DDR400(PC3200) Type: 184 Pin DDR SDRAM Error Checking: Non-ECC Registered/Unbuffered: Unbuffered Cas Latency: 2.5 Support Voltage: 2.5V Bandwidth: 3.2GB/s Organization: 64M x 64 -Bit Warranty: Lifetime This will work in the new iMac, right? Anyone have any experience with this RAM? Will it run duak channel with the RAM I get from Apple? I know most people recommend Crucial, but this is $12 cheaper and has a lower CAS latency, so I'm looking for reasons why I should not go with this RAM.