I'd see no reason why running at 2.4G (4600+ speeds) would be that much of a challenge, barring a lemon cpu or mb...
Not all make it as high as many are led to believe, where 2.8G- 3G on simple air cooling is more myth than substance....
If you even make it to 2.2G, a mere 200 Mhz OC, you essentially have dually 3500+ processors, which will be nice...