cant say for that mobo but the higher end am3+cpus perform best in 970/990fx chipset boards so if you want compatibility go with a new mobo and cpu.
some am2 boards can have am3/+ cpus but they always need a BIOS that supports that chip, so they probably wouldn't support any other chip that is not of the am2 socket
Here is your cpu support list. You might need to check on older revisions if yours isn't the one in this link. http://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=419#cpu
Thanks man. What are these watts? Is it power consumption?