DDR3 DANS MACBOOK MB881F/A ?

DDR2 vs DDR3
But just what are the pros and cons of DDR2 and DDR3? Is it desirable or even possible to upgrade from the former to the latter? The first thing to appreciate is that the two memory types are completely incompatible with each other. Everything from voltages to timings and signalling is different.
Fortunately, they're physically incompatible, too. A repositioning of the slotted groove on DDR3 sticks and sockets means you can't accidentally insert the wrong memory into you motherboard. Of course, a change of physical form factor also means the minimum requirement for changing memory types is a new motherboard.