I heard that 2100+ and below have a soft limit so you can't go above multiplier 12.5. If that's so, you'd either need really good ram along with the 12.5 mult to get a high clock or you could get a 2200+ and run it at even higher mults.
In any case, the 2500+ is a better choice since it has double the L2 cache and lots of headroom for overclocks.
In any case, the 2500+ is a better choice since it has double the L2 cache and lots of headroom for overclocks.