interesting observation on overclocking celeron 600 cc0.

[sendatooli]

by now im sure all have read my rants. anyways, my celeron cc0 600 will only reach 900. whats so interesting about that you ask? well i know not all cc0 celerons make it higher than 900. this is the interesting part. it runs on 100fsb at stock voltage rock stable. it maxes out at 26c. temp. it runs at 75mhz fsb(so i know it is not my motherboard or peripherals that will not go higher). the strange thing is, if it runs 100 fsb at stock voltage at super low temp rock stable. why then will it not even post at 103 fsb? i would think if 100fsb was really all it could give and it was maxed out, it would need higher voltage and wouldnt be so stable at 100mhz fsb. usually if a chip is rock stable at one fsb it will at least post at the next fsb. i think this chip has more in it. it is keeping a seceret somewhere. i thought by now i knew all the tricks with celerons. obviously this little guy is hiding something from me. if if you have any idea what it might be, please let me know!

also, i thought i might just trade it towards a p!!! 700(to go 1 gig+). i do not know if my infineon 7.5 nanosecond pc 133 512mb. will make it to 143+ bus. will it? if so ill probably just go try the p!!!. if you think it is worth it. i know it will not be hard to squeeze more performance out of the p!!, at any speed.
still, id like to get my little cely going where i know it wants to go! thats the fun of overclocking. why give up 7 days after i bought it?


any suggestions on this matter are greatly appreciated,
sendatooli.

[wild_andy_c]

What memory are you using ?

Have you actually tried burning the chip in for a few weeks at a higher voltage?
.........or is this an out of the tray speed?

My first 600 took a month to do 900. I've now got it down to an art of burning them to achieve real speed.

[Something]

Well, the same is happening with my cC0 700 Mhz my friend!
And this is exactly what i tought too (that the chip has a little secret somewhere). Mine will work fine and rock stable @87, but won't work @90 or more... My CPU is brand new and it might have to do with what the other guy (wild_andy_c) pointed out... we'll see...

Something

[sendatooli]

wild_andy_c, as i stated above i am using infineon(kingston) 7.5 ns. pc 133 2x256=512mb.
i ran the chip at 600 at stock voltage for 7 days before i even attempted to o/c it.
right now, before i even read your post, i am running it 900@1.98vcore. with prime95 torture test going 24/7. also, i have now set the asus slocket to the ppga mode to increase i/o voltage. i have further set the vio voltage to 3.58(max setting) sometimes exceeds 3.6 at this setting. if this kills it big deal! its boxed!(hope intel isnt reading this!). it may be my video card since when i jiggle it around, it starts to post and gets a little further at 105. i doubt it though, since i know for a fact that the vid card(radeon) runs at 88mhz bus.
you may be right about the break in, though. my 566 cely did 953 before it died. it took 9 months to get it there. when i first got it, it wouldnt go 850. you can see why im mad though, my 566 went faster than my 600 is now going. i really thought it was gonna hit 1100mhz plus out of the box. im lucky like that. well, not this time!
also, my pep66 does not seem to be making real good contact, but the thermal diode reads 26c. under full load. 20c. idle. erronious reading,maybe?
once i got the pep66 jamed on the 566 it went faster. like i said i have a super amount of air colling,though.

well, in the final anyalisys what mhz might i expect out of this baby once i break it in? i doubt 1108 is in the cards at this point? without being that greedy do you think i have a chance for 1008?

your reply greatly appreciated,
sendatooli.

[LutaWicasa]

May I ask a silly question? I've noticed recently that a large number of people have had some probs going as high as they thuoght they might. Has everyone forgotten about the old celly's and some of the lessons they taught us? At least 2 peeps I talked to (on some board or other) have managed a little extra ooomph by futzing with the L2 cache. My old cel300a didn't want to go 504 until I raised the L2 to 15. After a few days I was able to drop it back to 10. Perhaps the L2 isn't quite happy at those speeds with default latency (which I beleive is about 2?) Just a suggestion, and ignore if you've already tried this. Lotsa luck.

[Tom]

you cannot adjust the L2 latency on the new celeron II just like on the new pentium III, AFAIK

[Joe Conflict]

I've been running a Cel 600 at 900 for a few days now successfully, but when I attempt to go to 104Mhz bus speed, I will POST and boot, but will get a Windows GPF, so I think there is a limit to the chip somewhere. It's all in balancing the heat, clock speed, and voltage input that makes the chip happy.

[sendatooli]

ok, as i stated earlier, my cpu is running under 26c. at full load about 21-23 idle. well the alpha works best in my case BLOWING. yeah, blowing super hot air right onto the bx chipset! i thought i took care of this by installing a larger hs on the bx. guess not. since it is running at 36c. idle and up to 44c. under full load. are the temps more than the bx can handle? my abit had more space between the alpha and the bx chipset, so it did not get that hot. if you think this is my limiting factor to hit 1 gig,what should i do? no room to fit any larger hs or fan on bx(blue orb or lasgna is out of the question).could reverse alpha to suck like it is supposed to in the first place, but on my cely 566 that made the cpu run too hot.

all i need to know is, "is my bx temp too high?". if so im going to work on this problem straight away.

any replies are most welcome,
sendatooli.

[batboy]

I don't know for sure, guy...but it sounds like 44 is a little hot for a Celly and a BX board. Might need more heat control. Some people that have lapped their heatsinks smooth and used Arctic silver have reported some success in lowering temps. I've heard that some motherboards overclock a tad better if their is only one stick of RAM in. The secret for a fast Celeron is effective cooling and then higher voltage.

Little by little since last summer, after lots of research, learning, work and effort, plus trial and error, I finally got my C566 to post at 1030 MHz, but then it locked immediately. It's been a long road and I'm determined to benchmark my machine at 1+ gig, but I have more work to do yet. So the moral of the story is: don't get in such a hurry, my friend. Overclocking is not always instant gradification. Woo that little chip like you would a special lady. If you treat it right, ya might just get lucky! Good luck!

[sendatooli]

alright, just did a few mods. this is interesting. a lot of air cooling. cpu ia at 25c. full load! and chipset is at 33c. full load! usually cpu would be hotter, but because of what i explained in my last post it is not.

still too hot?, i doubt it.
doesnt get cooler with air cooling.
im just waiting to break it in now and see what happens in a week or so.
i may hold off on the p!!! 700 after all, since other people are having their problems too.


overclocking is like las vegas, that is why intel does not "condone" it.

sincerely,
sendatooli.

[Tachyon]

No, overclocking an Intel is like Vegas BECAUSE they don't condone it (and locked the clock multiplier inside the chip). :)