The Foxconn N570SM2AA has a tab in the BIOS setup that handles all the overclocking features. Alternatively, you can use the windows version of Tiger One, that controls most of the overclocking features:
After several tests, we managed to get a stable system at 230FSB, with however the multiplier dropped down to 10x. The system could POST at 240FSB, however Windows couldn't load.
With the Multiplier at 12x, we only managed to get a stable system at 216FSB, whereas the Foxconn C51 reaches 230FSB and the Asus M2N32WS Pro 224FSB. Overall, this motherboard is not an overclocking champion, at least compared with the other, higher priced AM2 motherboards.