Author: Robert Hyatt
Date: 18:21:07 01/16/99
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On January 16, 1999 at 18:31:18, Rajen Gupta wrote: >I recently built a new computer with 128megs ram and the celeron 300A processor >(great buy at £60)which i have successfully overclocked to 450 MHz.It has been >running stable at this speed (I ran F5 and CM5000 simultaneously, continuously >overnight for last 3 nights to test the stability of the overclocked chip.) I >got the following values for fritz mark and junior mark: > >FRITZ MARK short 316 KN/sec=392 (16 Mb hash tables) > >FRITZ MARK long 291 KN/sec=434 (96Mb hash tables) > >JUNIOR MARK short 307 KN/sec=381 (20 mb hash tables) > >JUNIOR MARK long 332 Kn/sec 373 (96mb hash tables) I wonder how these values >compare with a genuine pentium ll 450 or 400 MHz or even a top of the line AMD >K6? would the extra 512 kb of cache running at 1/2 speed out perform 128 kb >running at full speed? I wonder if people with such systems could let me know? >even perhaps a comparison could be made between Cel A vs pentium ll vs AMD for >different programmes. Interestingly CM5000 calculates 25-28000 posn with every >blink.I'll try to boost this chip to 500mhz and if it runs stable I'll post >figures at this speed as well. > >Rajen Gupta Two parts to this answer. The celeronA can be better than the PII, but it depends. The PII at 450 has 512kb of L2 cache running at 225mhz. The CeleronA has 128kb of L2 running at 450mhz (assuming you overclock to 450mhz). That may or may not make it faster. For small compact programs (ie like Fritz) this might be a better deal. But be aware that when you overclock temperatures rise. And the L2 cache is really taking a beating. Although I really believe that the L2 in the celeron is the same type technology as in the 450, so it probably won't hurt it much. But I'm not a big overclocking fan. ON the linux SMP kernel mailing list, I hear horror stories every day about how this causes odd behavior... and causes problems that are not always 'solid'.
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