Hi guys, I have a few questions regarding iMac 2011 ram since I'm planning to upgrade the existing 4GB to 12GB ( add another 2X4GB stick );

1. Any recommended brand?

2. Where can i find shop that sells 2X4GB kit around selangor / kl? Most of them just sell single 4GB stick.

3. http://www.lelong.com.my/crucial-4gb-1333m...3-02-Sale-P.htm - Will this work as dual channel since i bought it separately ( not 2X4GB kit ). I've read somewhere that dual channel 2x4GB kit ram is compatible & has been tested by manufacture to pair together, unlike separate stick. Is it true?

TQ!