Whats Better?

Can anyone please tell me whats the difference and which one is better between these (apart from the price :) ):

Intel Pentium IV 2.4GHz 478Pin 533MHz 0.13u Retail Boxed (£176.24)

Intel Pentium IV 2.4Ghz 400MHZ 512k Northwood Retail Boxed (£176.24)

Intel Pentium IV 2.4GHz 478pin 400MHz 0.13u (£345.82)

Thanks

looks like the 3rd one is a missprint or a zeon but the 533 is the better one

Wgats the difference between Northwood and a Normal P4 ???

primary cache is the obvious difference (normal 256k northwood 512k) but there ara a lot of differences besides ie northwood run at lower temp and lower voltages