That particular MSR (C0010015) is the exact one deciding the errata patch and it'll work on all boards which have the patch to a certain extent. Changing 18 (patch) to 10 (disabled) will net you good benefits. It works on the MSI 790FX too and AOD "magic" button does exactly this, changing the bit values but performance is not like without the patch in the first place in many applications, which includes memory intensive work.