MC026LL/A vs MB985LL/A

[baypharm]

I am trying to find the differences between these two Macbook Pro models. Researched each one but they appear identical or very closely matched. Can anyone here shed some light on the differences? Thanks!

 

[Sponsi]

These are the March and June models of the 2.66GHz. The March release has a 6MB L2 Cache, 9600GT 512MB VRAM, replaceable battery, and Express card slot. The June release has a 3MB L2 Cache, built in battery(7 hour), supposedly battery screen, SD slot, and 9600GT with only 256MB VRAM. Both support 8GB of RAM.

March: MC026LL/A
June: MB985LL/A