late imac 2009 memory into imac 2010

[newhere]

I have 2x4GB imac late 2009 memory, does anyone know if compatible with the new imac 2010?

 

[Hellhammer]

Yes but the new iMac uses 1333MHz memory so if you add 1066MHz memory, the existing modules will underclock themselves to 1066MHz but it will work fine and I doubt you will notice any difference

 

[ziggyonice]

Yes, they use the same types of RAM, albeit *slightly* slower. So you could use it in the new 2010 iMac without any problem.