It depends; there were a few different 2.4GHz Pentium 4's, which one is it? If it's a Northwood 2.4C, then it should overclock rather well. Some of the B's overclock pretty well too supposedly, and idk about the A's. The C's default FSB is 800MHz, the B's 533 and the A's 400. The C is hyperthreaded while the other two aren't. Plus, you know, the chip's OCing ability is only as good as the other components (mobo, psu, ram). These days, a 3.6GHz Northwood CPU is not really that great (some of the 2.4C's were clocked up that high, although that's certainly no guarantee for you, I'm just using it as an example since it's the highest you're likely to get), but hey if it works out for you then awesome. What you might want to consider is just seeing how well it OC's and hold onto that OC'ed rig until like the Pentium E's come out; if you don't know, they're basically C2D's with 1MB of L2 cache (it doesn't affect performance too much, like 3% in games and not too much more in other apps). The E2160 will be $85 and be basically an E4300 with 1MB instead of 2MB L2 cache. Oh man, if you want to overclock for cheap, that will be the chip to get.