Is it possible to overclock a P3/866? I could use any advice.

[divinemartyr]

I just recently picked up a P3-866 FC-PGA, and realize that the FSB is already at 133, however, is this chip overclockable at all? I picked up the Asus CUSL2 motherboard, and know this is a decent motherboard for overclocking.

I'm very new to overclocking, and know very little about increasing voltages etc. I haven't installed the chip/mobo yet so any info before I do this would be greatly appreciated. Thanks!

One more thing, if anyone else has experience overclocking this chip successfully, please let me know.

divinemartyr

 

[SF DUDE]

You can overclock it, but you don't have much headroom being at 133 already. High quality PC143 or PC150 ram will be a must. Also make sure that you keep your PCI bus speed down. Don't expect much more than 900 or so from this chip.

 

[divinemartyr]

Wow 900 mhz, wouldn't even be worth oc'ing it. I bought crucial cas2 memory, the 7e sticks.. so i don't know if those would work or not.

 

[Plester]

you could probably get well above 900 on the cusl2, all depends on the chip. i built a cusl2 rig w/ a 733 for a friend and o'ced it for grins before installing all the cards. the 733 went to 913 at default voltage, stable as could be.

 

[divinemartyr]

I hear that 143 is a popular fsb. If so, that would give me about 931 mhz wouldn't it? How do you know if your overclocking was successful? If it boots?

 

[Usul]

If it loads windows, try w/ SETI@home or RC5 , if it's still working try qIII or similia and finally a cpu stability test.

 

[AdamK47]

I've been running my 650E at 1021MHz for about three months now. Ever since I got my MSI board I've been running at over a gig. If you really want to overclock that 866EB, an i815 board and some PC150 or CAS2 PC133 memory will do wonders for you.

I was really lucky with my CPU though. I've actually been able to run my CPU at 1080MHz on a 166MHz bus with the memory still at 166MHz 3-2-2 for about an hour before it overheats. It makes me wonder what a peltier would do.

 

[zener]

Good chance to run it at 6.5x142 to 6.5x144 stable. I am running it now at 6.5x144 = 936 with 1.7v core

 

[divinemartyr]

zener,

Thanks for the info, that's exactly what I wanted to hear. =)

AdamK47 - 3DS

I actually do have an i815e board, the Asus CUSL2. Also I have Cas2 PC133 memory from crucial. Hopefully I will have some luck overclocking this badboy. Sounds like I should pick up an alpha cooler first though.


divinemartyr

 

[divinemartyr]

zener,

Based on your recommendation, I clocked my system at 144fsb cas2-2-2 no problems. 936 mhz just feels faster! I don't even know if it is, haven't ran benchmarks at both speeds but it sure seems to be. My temp readings are about 30 celcius when idle and 44 celcius under a heavy load, was as high as I could push it to.

divinemartyr

 

[Supradude]

Good job!!! OC Rules!!! he he