Celeron600 cCO @900, but very unstable!!!help!

[Spacepiston]

Currently retyping this for the 3rd time, because of system errors!

Running 1.95volts (max allowed) and using intel heatsink/fan. Anything from 800+ is just like this.

Is it a heat problem? it will do 800mhz at 1.7, but unstable, like this..What can I do/ The thermal tape is shot, but its hovering around 35-40C temp wise, according to Sandra.

Are there other tweaks to make? Is cooling my problem? Almost any FSB will post, just wont make it to windows.

ABIT BX133, with 3 sticks of PC100 memory.

I know these questions come all the time, but hey!:)

[batboy]

You've answered your own question. It's running too hot. I'd ignore the Sandra temp and look at the facts. Number 1: CPU voltage of 1.95 is too much unless you have better cooling. Number 2: Thermal tape is crappy to begin with and if it's shot, you'd better stop right there before you burn that chip up. Number 3: Toss that retail heatsink/fan in the trash and get something significantly better. If you plan on running 1.95v, forget about the Gorbs too. Sorry to be so blunt.

[Newbie_Doo]

batboy (Mar 28, 2001 08:54 p.m.):
You've answered your own question. It's running too hot. I'd ignore the Sandra temp and look at the facts. Number 1: CPU voltage of 1.95 is too much unless you have better cooling. Number 2: Thermal tape is crappy to begin with and if it's shot, you'd better stop right there before you burn that chip up. Number 3: Toss that retail heatsink/fan in the trash and get something significantly better. If you plan on running 1.95v, forget about the Gorbs too. Sorry to be so blunt.

DItto.

Shut down, remove the frag tape, apply Arctic Silver, drop voltage down to 1.80, and try again. With the Retail HSF, I wouldn't want to go much beyond 800MHz and 1.8V. Your temps are too high, and you aren't getting good heat dissipation from the HSF. Invest $30-$40 in a good HSF, or $100 in a decent watercooling setup if you want to push beyond 900 with that chip.

[Spacepiston]

what temp is reasonable?

It idles around 80 degrees F, does around 120 when Sandra is running burn wizard.

I keep my case open, if that makes any difference.

[Newbie_Doo]

I found that my C2 got unstable around 39C. It was OK most of the time at 35C or less. Currently I am running 900MHz at 23C (ambient+2C) but I am watercooled. As for the open case, you MIGHT be making it harder to cool your cpu that way. If you have airflow through the case with the cover on, you should leave it on. With the case cover off, unless you are forcing air onto the mobo/cpu, you are likely just circulating the same warm air around the cpu.

[DocClock aka MadClocker]

Yup, frag tape is the worst, and some here swear by Arctic Silver thermal compound, (i'm one), even if you don't have a good cooler, at least get the good thermal grease....and in my experience, anything above 37c when overclocked is too hot...if you can keep it around 35-37..it might stablise out, but they are right, throw away your reaail h.s fan, and get an alpha, or Globalwin heatsink...your chip will love you for it, and just might surprise you with multi megahertz

[marty]

Spacepiston,

If you want to quickly check whether we are right, you can go to Radio Shack and get their thermal grease. Clean off the tape and use a small amount of the grease. If you get an improvement you know that cooling is your problem!!

[batboy]

OMG, it's heating up to 120F just during Sandra?!? That's nearly 50C, anything above low to mid 40's will start causing stability problems with a Celeron. Stop immediately and take corrective cooling action before it's too late. Like was said, at the minimum, get rid of that thermal tape and get some thermal paste.

My hero, Tim, has suggested in the past to open the case and direct a household AC fan to blow inside. If there is any improvement in stability, then it's a cooling problem. But, get rid of the frag tape first. If you are having trouble making the metric conversion for temps, try to keep the CPU full load temps down below 105F.

[Spacepiston]

Thanks for your help.

I went to Radio Shack and they were sold out!!!

Its definately a cooling problem. I found that everything is stable when under 40 C, but when it heats up past that, then it starts having problems.

I had a bid in on a Golden Orb, but since I havent heard many good things about them, I let myself be outbid.

So your saying a GlobalWin hsf will keep my chip under 40 C @900? ..damn i dont wanna spend another 30 bucks..but it looks like I might have to.

[batboy]

Check out the link below, they have a GlobalWin FOP32 for $19 on sale. This is the same heatsink as the FOP38 except with a less powerful fan. At some point, if you decide you need more air flow, slap a 80mm fan onto the sink like iI did. It keeps my P-III 700 CPU below 40 degrees even running 1071 MHz @ 1.9v.

http://www.directron.com/overclock.html

[Spacepiston]

Thanks, I think im going to go with this Alpha PAL 6035.

This guy has it modified with 2 extra fans, and hes throwing in a case cooler fan.
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1225464539

I wont need a 3 to 4 pin adapter right? The BX133 can handle this puppy?

[[SiRTOBY]]

How did you get that Celeron II to 1.95 volts on a BX-133 raid? isn't the max voltage 1.75?

[Spacepiston]

I donno. Im using 6.00 PG BIOS? Im not sure if its the latest or not.

I am using a cCO stepping chip though, which has a default voltage of 1.7volts.

I am allowed 1.95volts as a max from the BX133

[[SiRTOBY]]

What exactly is a CCO stepping chip? Any screenshots or reviews?

[William]

yeah, get a better hsf and some thermal compound. I am using the retail hsf on my celey, but i just got my fop 38 in the mail today :-). I won't dare take my system beyond this, but my temps are about the same and I am even more stable with the overclock ?????????? certainly a strage side effect.

[DocClock aka MadClocker]

Sirtoby, the stepping code is just intels coding from one chip to the next..the cBO was out, then came the cCO, next will be cDO stepping...every time intel makes an improvement, they change the stepping code..and it seems to follow some kind of alphabetical order.

[[SiRTOBY]]

So is there anything better with cCO than cBO?

[batboy]

With that eBay Alpha, I'm skeptical that adding a couple low flow el cheapo 40mm fans to the sides of the sink actually will give much improvement in cooling. It's looks to me like a gimmick more than anything, but who knows. Seems like 3 fans blowing in at 3 different directions would be fighting each other. Not many 40mm fans are rated at 8 CFM except the ones that are 20mm thick, and those shown in the pic are 10mm thick, plus part of the flow of 40mm fans are blocked by the metal shroud, so even if I were kind, it might give an extra 5 CFM per extra fan. That brings the total flow up to about what a standard GlobalWin FOP38 would be. My one 80mm fan still flows more than all of those 3 fans combined. But it has to be a vast improvement over what you currently have, I guess.

[LutaWicasa]

When I first got my Cel 566 I noticed as soon as temps reached 39-40c she'd get real hinky. I now use Alpha Pal 6035 w/ Delta Black Label. Even being the old Alpha(solid alum.) temp has not gotten over 36c. Thats when ambient is too high to begin with. Usually around 33c. I'm pushing 2.0v thru this Cbo puppy and all I have is Radio Crap compound. If ya cool her down she'll dance for ya :)

[Aveman]

I was having problems overclocking my cC0 Celeron II 600. The way the motherboard was designed was to boot up at default voltage before the ram test at the FSB you specified and change over to the voltage you specifed thereafter. So I couldn't even post at anything higher than 810 MHz. To fix this you have to trick the motherboard into thinking that the default voltage of the cpu is higher. To do this you have to be connected three pins on the bottom of the cpu with a thin copper wire. Instructions are here http://www.cotty.btinternet.co.uk/vidpinfrm.htm For a cC0 celeron II 600 you connect pins Vss,VID2 and VID3. It really isn't hard, I did it and I am new to overclocking. In bios my options now start from 1.9-2.2V, I won't be going any higher than 2.05V. So if your board lets you go to 1.95 V now, after doing this is will allow you should be able to go to 2.15V you would never attempt anything higher anyway I hope. If you run at 2.0V you should be rock solid stable assuming you get some good cooling going. I am now running at 900 MHz at 2.0V burning in, it can run at 1.9V at 900 MHz I have a pretty big Athlon fan on there now, so if you look into better cooling you might now even have to do this, but if you want to go higher and not have to get a new motherboard that this is the solution for you. It can go to 945 no problem. I am going to get a better case and a Global Win FOP-38, blue orb for my Geforce, a massive fan for the side of the case and a chipset cooler, I have already put Arctic Silver paste on the chipset, and go from there.

good luck, if you are going to do this be patient when wrapping the wire and MAKE SURE you have wrapped the right pins otherwise you will be looking into getting a new cpu.

[Spacepiston]

Newbie_Doo (Mar 28, 2001 11:29 p.m.):
As for the open case, you MIGHT be making it harder to cool your cpu that way. If you have airflow through the case with the cover on, you should leave it on. With the case cover off, unless you are forcing air onto the mobo/cpu, you are likely just circulating the same warm air around the cpu.

I checked out temps with open case, compared to closed case with case fan.

Temps went down by 1 C with case open, Cooling is definately better with open case, but Im not sure if that will remain true in the summer.

BTW< I am now running an Alpha, and the temps never go above 37C, but Im still having serious stability problems for anything around or above 800mhz.

[Kerman]

Spacepiston (Mar 28, 2001 11:16 p.m.):
I keep my case open, if that makes any difference.

Move to the artic and then open your case that should help!!!!