Interesting to see the E5200 is revision R0.
I wonder how low the voltage can go while the cpu remain stable, and how high the cpu can OC while running at the default voltage.

yeap, the most famous Celeron was the 300A (back in year 1998), which was launched when Intel's top model was Pentium II 450 with 512kb half speed L2 cache. The Celeron 300A was set to run on a 66MHz bus with a 4.5x multiplier and a 128kb native L2 cache. Abit BH6 was the most popular motherboard to pair with the 300A, since it allowed the 100MHz bus on the 300A, giving performance on par with the PII 450. My best bang for the buck since it's a 50% OC.