If you think that the slowest Intel Celeron based on 0.13micron Tualatin-256 core works at 1GHz core clock frequency, then you are greatly mistaken. Although Intel never mentioned this openly, we can still find Celeron (Tualatin-256) 900MHz in retail stores. According to our sources, which have had the chance to test this processor, Celeron (Tualatin-256) 900MHz are equipped with a standard HIS (Integrated Heat Spreader), support 100MHz bus, 1.475V Vcore and feature 256KB L2 cache. S-Spec of the mysterious Celeron 900A MHz, which is not even mentioned on Intel’s official site is SL68V.

Of course, overclockers will simply love these CPUs, like any other young family members. The guys who have tested them claim that Celeron 900A MHz can overclock over 1500MHz easily.

However, there is nothing surprising in the fact that these processors started retailing. Since Intel’s budget solutions are moving to Pentium 4 architecture, Intel is trying to get rid of the Socket370 processors left in stock as soon as possible. Since there no more Coppermine based Celeron processors produced, Intel tries to sell its Tualatin based Celeron CPUs by assigning them lower working frequencies and hence lower price.