Is it possible to OC a P3?

I got this free ancient pc and it is a dell optiplex GX110 running at P3 800Mhz
256mb SDRAM and 4mb of graphics...

Is it possible to overclock the 800mhz cpu to 1Ghz? if so, how?
11 answers Last reply
More about tomshardware
  1. Not sure about P3 800MHz, but a P3 933MHz can be easily OCed to 1GHz with stock HSF and a single BIOS setting change. Perhaps you'll need a good HSF.I've never OCed P3 extensively, but if you could set the RAM to 133MHz and FSB to 166MHZ (CPU:RAM ratio of 4:5), with proper cooling, good BIOS and board, plus some luck, may be you could
  2. Were there some kind of 'locked' Coppermine (other than multiplier locked)? Or was it locked to a certain FSB? Still, I myself not sure whether tonting's CPU is a Coppermine or something before it (What was it? I only remember Katmai :oops: )
  3. I seem to recall that there was a 8x100fsb and a 6x133fsb. The 8x100 overclocks much better because of the higher multiplier.
  4. I overclocked my Celeron 1.1GHz to 1650 (Tualatin core) with a pin mod. But that was a while back. I never had any success with P3's. What little overclock you may achieve would probably not be worth the trouble.
  5. I've oc'ed a old celeron 300A, so from 300Mhz to 450Mhz. They were the best at that time for oc'ing...

    Last me a few months before upgrade to my P3 600Mhz, and my P3 was Oc'ec to 733Mhz without any problems, depends if the mobo will allow it.
  6. Chances are that Dell BIOS is locked up pretty tight, with slim chance of an fsb change. Might be able to tweak it with software though, depends on the chipset I guess. Is it a slot 1 or a socket 370 P3?
  7. Quote:
    Chances are that Dell BIOS is locked up pretty tight, with slim chance of an fsb change. Might be able to tweak it with software though, depends on the chipset I guess. Is it a slot 1 or a socket 370 P3?


    I would agree with you. I had 2 Dell before and their BIOS are VERY simple and limited. Only the current high end are overclockable I believe but they are way too overpriced (can do a custom at a better price).

    That why I left Dell and did my own custom build.

    Anyway, would you see a big difference from 800 to 1000? And you can have a basic one starting at 379$USD. Must say that very low for light use.

    I you find a way, let us know! :D
  8. Try soft FSB works on a old dell 300.
  9. Whoa ! Thx for the replies

    The Core is a Coppermine Socket 370 and all the cpu features in the bios are all locked cant change a thing...
  10. Actully on a P3 a 200Mhz increase would be noticeable. The P3 was faster than the P4 clock per clock. I personlly own 2 P3 systems and i owned a P4, and my 1ghz P3 was a very capable system, more so than the P4. But i highly doubt you will be able to change anything on it.
  11. Most coppermines can reach 1Ghz, but don't expect it to go much higher then that. I remember trying to push my 866mhz coppermine above 1Ghz while utilizing some pc-166 ram I had, even pumping 2.2v into that cpu couldn't keep it stable above 1Ghz as anything that heavily utilized the L2 cache would crash almost instantly.
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