Celeron 400 overclocking. how much ?

[Thor_Sevan]

My friend wants to overclock his celeron 400.
I told him he could go to 75, 83 and 100 mhz bus speed. He has 100 mhz ram.

Is it safe to run the 83 mhz bus speed ? Or, could he run at 100*6=600 mhz with a new FAN on the CPU ?

Thor

 

[odog]

366's @ 550/566 which were much more likely then 400's @600...

he has a chance with a good HS/F but it's not very common.

 

[bacillus]

take a look at the cpu database here to help give you some idea!

 

[Howard]

I think Adul had a 400@600...

 

[Thor_Sevan]

Humm, cool.
But, is the 83 mhz bus speed dangerous ???

THor

 

[Eug]

<< Is it safe to run the 83 mhz bus speed >>



No.

While the CPU might be OK at 500 MHz, the drives may go belly up at 41.5 MHz.

I would stick with 75 MHz.

100 MHz - I doubt it, but you could try, with a better heatsink/fan, and a 2.2 V Vcore.

 

[Rand]

It's highly unlikely that he will manage at 100MHz FSB, the 366's were the last .25micron Celeron processors to manage 100MHz FSB with any degree of regularity.

It should do 75MHz FSB no problem and that is a pretty safe FSB speed. There is a fairly good chance that it would do the 83MHz FSB BUT that would force a 41.5MHz PCI bus and a lot of peripherals may not like being forced to run that high.

 

[apoppin]

I had a Celeron 400. The best it would reliably do is 450Mhz. 500Mhz was possible but the system was a bit unstable. The 300A, 333 and 366 were far better overclockers.

 

[Vrangel]

I second what Eug said. When I used 83fsb my HD sounded differently.
I ignored that...and then one day HD booted with screeching noise.
It was dead.

 

[RedShirt]

Yeah... I hear you guys. The 83 mhz bus was the worst idea in the world. I think it was Asus that came up with the idea, right? Well anyways, I have never had any luck running anything at 83. Everything is just too out of spec.