The Z68 Pro3 M is an abridged version of the Pro3. Bother motherboards offers four DIMM slots, a single PCIe x16 slot, RAID support and amongst of common features. But the Pro3 M shaved off some weight and size. The Pro3 M is a mATX board that also offers what the Z68 is known for and that is Lucid’s Virtu video support and Intel’s Smart Response technology. The Z68 chipset in a microATX form could be the beginning of an ultimate HTPC system.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips