C600 wont go higher than 612!!!

[RyanH]

CPU: Celeron 600 Malay SL46U cB0
MOTHERBOARD: Chaintech 6AIA4
RAM: 128mb SDRAM

FSB choices in bios and their results:

66: Works, but only 600mhz
68: What I'm currently on. 612mhz. Not good enough.
75: 675mhz. Gets into Windows, but crashes after a while.
83(80): 720mhz, freezes while opening Windows 98.
95: can't see anything. Have to reset bios on motherboard to get back to default.

What can I do? I can't change voltage in bios either or on motherboard.
In fact my voltage after getting into windows, is dynamic. Changes between 1.59 and 1.61. I don't know why though.

I even wired vid3 to vss to get 1.9v but when I started my computer I get nothing on the screen.

Please help!

[batboy]

What about cooling? The first thing you need to do is improve the cooling before doing any overclocking, especially before raising the voltage. Small fluctuations in the voltage like that is common.

[RyanH]

batboy (May 12, 2001 08:01 a.m.):
What about cooling? The first thing you need to do is improve the cooling before doing any overclocking, especially before raising the voltage. Small fluctuations in the voltage like that is common.

Cooling, yeah I got standard intel fan/heatsink. How come other people can get higher than me with the same cooling I have?
I see on the database that people can get to 900 using standard intel cooling.
I don't want to spend money on a noisy fan. Isn't there someway I could get up to at least, 720?

I should also mention, in my motherboard manual it says "You do not need to make voltage settings because SeePU automatically sets your CPU voltage."

The hell I don't!

[*spazzed*]

my computer is currently running at 626
Celeron 533@ 626...OEM machine (HP) with stock voltage and stock HSF, runs quite stable....no crashes yet and it's been running for almost a week......i guess it's just luck
since you can't raise the voltage, try running as fast as it will go for a while(say a week), then maybe you might be able to go higher but it may not work

[batboy]

Ryan, yes it does seem odd that it won't run at least 75 MHz FSB speed. I thought almost all Celerons would do at least that.

I think better cooling and a small bump in CPU core voltage might be the key. I recommend at least one front case fan pulling air in and another fan in the rear for exhaust.

There are plenty of good CPU coolers that aren't that noisy. However, stay away from the FOP38 if you don't like noise.

If you have a strict budget, then you might consider pulling the heatsink off and lap it mirror smooth with sandpaper. Then reinstall it with some good thermal paste. Arctic Silver works the best for me, but the much cheaper Radio Shack stuff is pretty good too. Don't use that crappy heat tape that's probably on it right now.

The motherboard does automatically adjust for DEFAULT voltage. You need to figure out if you can manually change the voltage, maybe look for the words "user define" in the BIOS under the core voltage settings. Once you get better cooling, you probably will want to slightly increase the voltage . This usually helps overclocking stability.

The problem is the higher the voltage, the hotter the CPU gets. The hotter it gets, the more unstable it is. So, cooling is a must. The higher you overclock, the hotter the system gets. Heat is the enemy.

[seadog]

Spazzed86:

How were you able to overclock your HP? I've tried all the fsb o/c programs I could find with no luck on my cel600. Getting set to replace the motherboard.

[RyanH]

There is no way to change voltage not even on my CPU, motherboard or bios.

I hate celerons.

[Carmine_Paterno]

Hey RyanH, don't destroy that chip! I recently killed mine while trying to get a peltier on it. I was wondering, since you are very unhappy with it, if you were willing to help me out and sell it to me. I don't feel like paying 50+shipping, especially since i don't have the money.

[batboy]

Ryan, you probably will need to get another motherboard, eventually. If that one is not adjustable, then overclocking is tough, not impossible, but tough.

For the time being, maybe do some of the cooling mods, you can probably get it stable at 75 FSB, I'll bet. Once you get the cooling under control, doing that "wire trick" to increase the default voltage to 1.9v will probably work, BUT at 1.9v you HAVE to be using excellent CPU coolers, thermal paste, and a couple extra case fans.

[*spazzed*]

seadog (May 12, 2001 04:22 p.m.):
Spazzed86:

How were you able to overclock your HP? I've tried all the fsb o/c programs I could find with no luck on my cel600. Getting set to replace the motherboard.

open the case up and look for the clock generator. Then write down the numbers that are on it, and use CPUFSB with the matching clock generator number, and it should work.......not very far though

[seadog]

Thanks.

[RyanH]

batboy (May 13, 2001 09:54 a.m.):
Ryan, you probably will need to get another motherboard, eventually. If that one is not adjustable, then overclocking is tough, not impossible, but tough.

For the time being, maybe do some of the cooling mods, you can probably get it stable at 75 FSB, I'll bet. Once you get the cooling under control, doing that "wire trick" to increase the default voltage to 1.9v will probably work, BUT at 1.9v you HAVE to be using excellent CPU coolers, thermal paste, and a couple extra case fans.

Thanks for your help, but with all those things you listed to buy, it would probably be cheaper to buy a better motherboard.

I still would have thought I could at least get to bios setup after wiring the vids to get 1.9v.

[RyanH]

Carmine_Paterno (May 13, 2001 05:51 a.m.):
Hey RyanH, don't destroy that chip! I recently killed mine while trying to get a peltier on it. I was wondering, since you are very unhappy with it, if you were willing to help me out and sell it to me. I don't feel like paying 50+shipping, especially since i don't have the money.

Maybe, how much would you be willing to pay? There are a few problems with that though.
1) I'm in Australia, not sure where you are though.
2) Although the C600 is small, it might get damaged on it's way to you.
3) I'd just be left with a crappy motherboard after that

[Newbie_Doo]

If your CPU is a retail unit, have you at the very least replaced the thermal tape with some thermal grease? This could mean the difference between 616 and 675 or more. Radio Shack sells some halfway decent compound for a couple of bucks and it will help tremendously. If you can spring $10.00 loose, you could get some Arctic Silver compound from one of the online vendors. This stuff is even better. Try improving the thermal transfer properties of your heatsink FIRST, then look to the things that actually cost a lot of money. Using the stock Intel heatsink/fan and Arctic Silver, I can reach 810MHz with my Celeron2-600. Try this first.