im pretty sure it (8rda/+) does right out of the box. if not, i bet with a bios update will fix it.
anandtech did a huge azz review of 6 nforce2 boards
here and the last paragraph:
"It really isn't in the least that the 8RDA+ was the best overclocker out of our six nForce2 motherboards, as Epox has made much of their reputation on highly overclockable (and reasonably priced) motherboards. So, with the above configuration we were able to hit 194MHz FSB (multiplier set to 8X). On that note, it's worth mentioning that the 8RDA+ is yet another nForce2 motherboard that is able to adjust the Thoroughbred-B's multiplier without having to perform any physical modification to the CPU bridges as was the case with previous generation Athlon XP processors (namely the Thunderbird and Palomino processors).
The 8RDA+ BIOS also comes with a ton of multiplier options ranging from 3X to 24X. These multiplier options should satisfy all users. " anandtech.com