Celeron II Temp

[Pb2]

Hello, I am new to the fourms. Anyway recently I upgraded an old Asus P2b (Rev. 1.02) (Bios 1012) motherboard from a Intel P II 400 MHz to a Celeron II 766 MHz. So far it seems stable. I was wondering if 35 degrees C. is a good case temp.

 

[ropey]

Hello Pb2 and to the forums,

Your temperatures are well within the operational limits and I would not worry at this temperature.

Your PII 400 has a built in thermal diode that will halt when temperatures rise unfavorably. Thus as long as you are not having problems with data writes or crashes you can be fairly certain all is fine.

Is there any reason why you wonder at the temperature? Any abnormal system functions appearing? The Celeron II 766 is running on a 66MHz bus and is capable of a better bus. The Pentium II 400 was running on a 100MHz bus and there is a liklihood that you can take the Celeron processor higher as it is a Coppermine based processor whereas the PII is an older architecture Deshutes processor.

Are you interested in working an overclock on this processor? Your Celeron II 766 is on a Socket 370 to Slot 1 converter I would think? Otherwise your Celeron II is running at a 2.0Volt which is NOT healthy for this Coppermine 766 which should be running at ~1.7Volts.

There is a fine writeup at this forum for the selfsame motherboard and Celeron II.

http://www.overclockers.com/tips296/index02.asp

R

 

[batboy]

Anything under mid 40's load CPU temp is fine for a Coppermine.

 

[Pb2]

Hello again and thanks for the reply. Yes I am looking forward to overclock the processor a little bit further. Do you know what is the max. Case temp that this processor can handle before it self destructs. Also do you think that this processor can hit the 800-900 mHz range using vantec's copper x heatsink and fan.

 

[ropey]

I would be very surprised if this processor did not make 11.5 X 75 MHz = 862.5MHz and possibly 11.5 X 82MHz = 954.5MHz

What fans do you have in your case? What size is the case and what openings inside the case do you have for installing fans?

Also which vantec fan are you speaking about.

R

 

[batboy]

Yeah, 75 FSB should be fairly easy.

 

[Pb2]

I would be very surprised if this processor did not make 11.5 X 75 MHz = 862.5MHz and possibly 11.5 X 82MHz = 954.5MHz

What fans do you have in your case? What size is the case and what openings inside the case do you have for installing fans?

Also which vantec fan are you speaking about.

R

The only fan the case has is the heatsink fan. The case supports only 1 fan and it would be a 120 MM intake. It doesn't support any exhast fans. The only thing I know about the vantec fan is that double ball bearing, spins at 6800r.p.m and has a CFM of 37.6. I also have another question, The motherboard has more FSB setting then the slocket. If i were to overclock the system which fsb should I use.

 

[batboy]

That CPU fan should be good. Your power supply should have an exhaust fan, so put an intake fan in the front of the case. O/C using the FSB settings on the motherboard.

 

[ropey]

If i were to overclock the system which fsb should I use.

I have myself successfully overclocked 733MHz Celeron II's (three out of three) to the 100MHz bus which is 1.1GHz. I do not know if your 766 will make it to 1.16 but there is a good chance. This was the last 66MHz bus celeron and as such was on a mature fab that was more than ready for the 100MHz bus.

I would first use the 75MHz bus frequency and test it out on prime95 for stability for at least six hours. Then I would move to 83MHz to test for boot rather than stability. If the system boots at 83MHz into windows then I would attempt the 100MHz bus frequency as this will bring your pci/agp speeds back to spec.

You might have to up the voltage of the Celeron II (via the slotket, since the ABIT SlotKet version has all the necessary voltage steppings) up to 1.7 ~ 1.8V. I personally have used the slotket for the FSB bin increases whenever possible. Your board should do this fine as well though and if the voltage changes are on board you can use them also.

R

 

[Pb2]

Ok, today I followed your advice and attemped to overclock the computer to 800Mhz. Before I did the overclock I tested my computer with prime95 at it's stock setting and it failed the blended test in under two min. Now that it is overclock it seem to have no problems so far. With the case open the computers current temp is 30c.

Update: After 46 min it failed prime95 blend test. Is this bad?

 

[ropey]

If your system is failing the test at stock then I would check your bios settings for your ram as possibly the settings need to be dropped down somewhat.

R

 

[Pb2]

Ok so how do I fix this in the bios and what setting should I set the memory to.

 

[ropey]

Set your system to "Bios Defaults" and this should bring your ram to bios settings. Then try a stabilty test.

If your system is still producing errors then I would swap out the ram with some other ram and retest.

I would say that your problem probably lies with either RAM or RAM settings.

R

 

[Pb2]

Ok it seem that the ram setting are at default. But anyway i tried overclocking to 83.3. It seems that the processor can handle it but the video card doesn't like it. At 100 Mhz it is even worse. The computer starts to beep or freeze. The computer is currently back at 75 mhz bus.

 

[ropey]

At 100MHz the APG/PCI are back to being locked at 66/33MHz. That doesn't mean that the processor can take the 100MHz bus as 1.1GHz is a fair speed for a Celeron II and some do not make it that high.

How's the errors at 75MHz?

R

 

[Pb2]

After putting the jumpers back at 75 Mhz the computer now fails the prime95 blend test in 2min to 1 sec. But then when I test the computer using sandra it doesn't give me any errors?

 

[ropey]

If your computer is failing prime at stock values then your system is not functioning stably and that needs to be addressed first. Sandra is NOT a good test of stability.

Sounds to me as though you might well have ram errors and need to test your ram.

Here is a free ram memory test to try at stock speeds.

http://www.setiathomescreensaverspeed.co.uk/downloads/freeware/ramemory/memtest/memtest.htm

R

 

[Pb2]

I ran the program like you suggested. After 1hr It has not reported any errors. Also since I have installed more memory in the pc, the computer now passes Prime95

 

[ropey]

Allright, now that you are not erroring at stock conditions you can up the fsb to 75MHz and run the Prime95 again.

If you do not get any problems at 75MHz then you can give 83 a try for boot and Prime stability. If you make it at 83MHz then by moving to the 100MHz fsb you will once again be in AGP/PCI stock speeds alignment. This is hopefully a range you will be able to make. If not then you will have to drop down to 75MHz or if your components can make the 83MHz AGP/PCI fsb increase you might wish to run it there.

I have done all three with the 733 Celeron II and finally left it at 100MHz fsb.

R

 

[Pb2]

Ok, my celeron is currently stable at 862. The problem is that it can't reach the 83 Mhz bus without a new videocard and 100 Mhz bus is too much for it. Is it possible to hit the 90 Mhz(1035 MHz) using some sort of software program. If so what program is that ?