Ok guys here it is the changelog for 0512, nothing interesting. Basically a 0511.

Striker II Extreme BIOS version 0512
- CPU multiper will no longer be set to default value in the BIOS setting after CPR.

Note: Please use either AWDFLASH or AsusUpdate version 7.14.01 to upgrade BIOS when your currentlyl installed BIOS is prior to version 0402. You could use EZflash to upgrade BIOS from version 0508.

Minor upgrade... but at least we now know what it does