Yes, change it from 2 to 2.5 and you'll be fine, 2 is just too much for this RAM. I'm running it @ 260MHz, but was able to run it stable with 262MHz @ 2.5-3-3-6. Maybe it would run even faster with this new beta BIOS.
Cheers
P.S. Good luck as it takes some time to find sweet settings for RAM .