lol, I bet it's an asrock?
the 4 year old AM2NF3-VSTA I have can run phenom 2 X4, although they claim certain graphics card restriction with a compatible list, and "If you use AM3 / AM2+ CPU on AM2 chipset motherboard, the system bus speed will downgrade from HT3.0 (5200 MT/s) to HT1.0 (2000 MT/s), but the CPU frequency will not be influenced."
Yeah has been one niggling with my system for a while, understand it isnt using all the features but cant bring myself to buy 8Gb of DDR3 (I do lots of video editing)
Mobo is an Asus M3N72-T