OMG I have to be the most unlucky person :(

[Aragorn992]

Specs:

P4 Northwood 1.6Ghz, Malaysia, L207139W.
ASUS P4S333
Kingmax PC2700 (5ns)
Enermax 350W Powersupply
Bios v1004c

I cant believe it. My system will not run at 133fsb! I have tried increasing the voltage to 1.7V, jumper and jumperfree mode, all the memory ratios but everytime I try to set 133fsb my computer does not post. It tells me "System failed due to CPU overclock".

This is extremely dissapointing If I had known this was going to happen I would have bought the Athlon XP.

Can anyone please help me?

 

[Ebola]

Aragorn992, welcome to the forums.

I don't think your so unlucky. Perhaps just uninformed. many of the p4's doing 133 fsb are using the wire trick to get additional voltage. Its can be risky for the cpu.

It might helpt to buy a better heatsink too if your using the factory one. I'm sure batboy or one of our other p4 experts will have some better advice for you later on today.

 

[Aragorn992]

What exactly is the wire trick and what will it do?

Im sure its not heat, the temp is staying at about 42 degrees in the bios after about one hours gaming.

 

[Tweak]

I think you just have an "average" CPU that doesn't want to OC. Regardless of what you do, you will not be able to get it to 133. I'm no expert on the P4, but don't you have a .18 micron P4 instead of a .13. If you do this would be another factor limmiting you and your quest for speed.

 

[batboy]

I think the error message might be the key to this puzzle.

"System failed due to CPU overclock".

Sounds like the "speed error check" (sometimes called "speed error hold") is not "disabled" in the BIOS.

 

[ol' man]

Specs:

P4 Northwood 1.6Ghz, Malaysia, L207139W.
ASUS P4S333
Kingmax PC2700 (5ns)
Enermax 350W Powersupply
Bios v1004c

I cant believe it. My system will not run at 133fsb! I have tried increasing the voltage to 1.7V, jumper and jumperfree mode, all the memory ratios but everytime I try to set 133fsb my computer does not post. It tells me "System failed due to CPU overclock".

This is extremely dissapointing If I had known this was going to happen I would have bought the Athlon XP.

Can anyone please help me?

Aragorn, welcome

You will hit 133fsb, just hang around and you will ge there. If you need to vid pin it is real easy. I think those woodys can get more juice than 1.7v.

 

[Overclocker550]

Specs:

P4 Northwood 1.6Ghz, Malaysia, L207139W.
ASUS P4S333
Kingmax PC2700 (5ns)
Enermax 350W Powersupply
Bios v1004c

I cant believe it. My system will not run at 133fsb! I have tried increasing the voltage to 1.7V, jumper and jumperfree mode, all the memory ratios but everytime I try to set 133fsb my computer does not post. It tells me "System failed due to CPU overclock".

This is extremely dissapointing If I had known this was going to happen I would have bought the Athlon XP.

Can anyone please help me?

have you used a fsb of 124 instead and disabled error hold?
only 75% of em will do 133fsb

 

[Aragorn992]

but don't you have a .18 micron P4 instead of a .13

I checked and it is a Northwood (i.e. 0.13u).

Sounds like the "speed error check" (sometimes called "speed error hold") is not "disabled" in the BIOS.

What is this "speed error check"? Can you disable it?

You will hit 133fsb, just hang around and you will ge there. If you need to vid pin it is real easy. I think those woodys can get more juice than 1.7v.

Im lost for ideas. Ive tried everything and it just wont boot.

have you used a fsb of 124 instead and disabled error hold?
only 75% of em will do 133fsb

I tried most of the fsb options below 133. I took out all my PCI cards but can only get it to post at 120fsb.

 

[Overclocker550]

do you have a 1/4 pci divider? if not, theres your problem
if you can raise the fsb, then you did disable speed error check. your hard disk drive doesnt like the high pci speeds. nothing much you can do other than get a new motherboard that has the 1/4 pci divider

 

[Aragorn992]

When you select the fsb on my motherboard it comes up like this:

100/33
110/37
...
133/33
...

I presume the 33 is the pci bus so if thats the case then is must be automatic?

 

[Overclocker550]

yes. ok now what about the 1/2 agp divider? maybe your memory isnt pc-133 specs? what fsbs does your mobo do? can it do between 120 and 133? try 128 for example. what errors do u get

 

[Aragorn992]

Yeah im not sure about the agp divider I always thought it was twice the pci so if the bus is within spec so is the agp. Ill find out more though.

My memory as it says in my first post is Kingmax PC2700, and ive had it running stable at 180Mhz DDR. Althought it isnt the problem as ive always used 1:1 ratio when trying to overclock.

I can go from 100->200 in 1Mhz increments. The best I could do was 120fsb with all my pci cards out, even then windows (XP) wouldnt load.

If I went over 120 I always get exactly the same error "System failed due to CPU overclock" if I have ASUS Post on or high frequency beeps with it off, meaning "CPU overheated; System running at a lower frequency".

I honestly dont think its my processor temperature though.

 

[Overclocker550]

have you tried it with windows98? maybe windowsXP knows when a cpu is overclocked and prevents it. also is your motherboard popular among the overclockers?

 

[Aragorn992]

My motherboard is one of the best overclockers afaik.

The problems isnt with windows though. The problem is that my bios wont even post at 133fsb!

 

[Overclocker550]

the only other explanation is your chipset doesnt like high fsbs. my abit bh6 isnt stable above 112 and my microstar wont post above 138fsb! I know the cpu can take 155fsb, see my sig

 

[TC]

The SiS 645 is rated for 133MHz operation, and the P4S333 has the proper dividers so the agp and pci bus run in spec at 133. Your pc2700 ram should be perfectly happy at that speed. I would suggest upping the cpu core voltage jumper on the board itself. The bios voltage settings are not applied instantly when the machine is powered on. Essentially your cpu has to be able to post at 133 with the default core voltage of 1.5. After it starts the bios will raise the voltage to whatever you selected. Using the jumper on the board forces the cpu to start up with the extra voltage. This has helped a few people get going. Otherwise you can try the pin wrap technique. That also forces the board to apply the extra voltage immediately at power on.

 

[Aragorn992]

Otherwise you can try the pin wrap technique. That also forces the board to apply the extra voltage immediately at power on.

Where can I get more information on this technique? Im defintely interested.

 

[TC]

Where can I get more information on this technique? Im defintely interested.

I would take a look at Batboy's thread on pin wrapping. He's had the most success with it I believe. It's in this forum somewhere. I don't have time to look it up right now.