Bij Thresh's & Gang is een artikel te vinden over hun ervaringen van het overklokken van een Celeron II 600. Het geteste exemplaar bleek op een Abit BE6-2 maximaal op 945MHz (9x105MHz FSB) te kunnen lopen. Helaas bleek de prestatieverhouding ten opzichte van een Celeron II 566 @ 850 niet echt optimaal te zijn:
The Celeron II 600 MHz wasn't a shabby overclocker by any means. We managed to push this little guy up to 945MHz, with online reports from others landing pretty close to that number as well. While its' performance wasn't bad, it doesn't seem worth the extra cash. In previous tests, both of our Celeron II 566s managed to hover right around the 900 MHz mark. As we just saw in our Celeron 600 testing, the performance didn't change too much when comparing the Celeron II 566@850 to the 600@945. We've found the 566 priced at about $150, and the 600 at about… well we can't find a price but rest assured it is going to be around $200 plus or minus a twenty.