Does anyone know if Sempron 140 works in ALIveXFire ? All other semprons are listed but not 140. And there's never amd processors listed so why not 140.
Is there some requirement of what type of memory the board should have dd2/drr3?
Can't say for sure. It may work, as the sempron 140 is designed to work on am2+am3 or am3 only boards; if you can't sell or return the cpu, I would select an older sempron core. I found a used 2400be dual core with similar performance for $38 shipped on a hardware for sale forum.
There is a 99.99999% chance that it works. I almost can guarantee it 100%. It is not on the support list but even the high end AM3 Phenoms are there so why an AM3 Sempron wouldn't work wouldn't make sense.
Is this motherboard one you already have? If you don't have this already you can get a great AM3/ DDR3 motherboard for like $65. It is ASUS too.