so what if the XP2600 is old and still owning the celerons ? my 8500 is old and it still ownz the 5600/5700 non ultraz and the 5700XT.. those sell for more that 100USD and i got mines for 85!
celerons normally have 1/2 the l2 cache of the current penitum processor in this case the precotts got 1 mb of l2 cache therefore the celeron should have 512 about the same of the as the old pentiums so expected performace boost is normal. While the athlon 2600 xp is almost 2 years old which mean it still kicking