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Celeron 300 (Case 2)
by Nicholas Chan (5/8/98)

The following article is contributed by Nicholas Chen (Webmaster of PC Asylum). Thanks Nicholas.

Celeron 464 Overclocking Experience

I bought my Celeron 300 and Asus P2B rev 1.02 from a shop at Sim Lim Square. Hurrying home like a small kid dying to play with his new toy, i carefully plug in my new Celeron into the brand new Asus P2B. The Celeron has no L2 cache, which implied that the success in overclocking the chip to higher speed will be higher than Pentium II. This is because in overclocking P2, the 2 factors that limits overclocking are cache and CPU. In eliminating the "cache factor", the celeron is more overclockable.

How overclockable are Celerons? For the particular Celeron i bought, i can overclocked it to 464 MHz (4.5x103MHz). As Celerons are "Clock-Locked", i cannot set at any other clock multipler except 4.5 (300 are supposed to run at 4.5x66). This is different from P2, which is "Clock-Limited", meaning that a 4.5x66(300MHz) P2 can use 3.5x or 4x multiplier.

At 464 MHz, the PCI bus is running at 103/3=34.3MHz. For those who do not want to overclock their PCI bus, 100MHz FSB is the perfect solution (I intend to run mine at 450MHz eventually). At 112MHz & 133MHz Bus Freq., my Celeron would not POST. I cannot even see anything on screen. But i have to be satisified at 464 MHz, for i had already "over-work" my CPU almost 55% !!

My System Configuration is:

Below is my Wintune 98 benchmark (Average of 3 Test runs)

WinTune 98

Offline Test Results