• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

Considering increasing voltages through vidpinning.

A

awdark

[H]ard|Gawd
2FA
Joined
Mar 22, 2003
Messages
1,633
I have a compaq. The bios doesnt let me overcook my p4. Its an intel 845 1.8ghz. I know the only way I can overclock it is through overvolting it via vidpinning.

Is there a guide anywhere on vidpinning? I want to knock it up to say 2ghz.

Thanks (I would search but its disabled)
 
sdfjklj... okay thanks for the information. I figured out the other element I needed was to be able to increase the front side bus. Mine is locked at 266 so its hopeless.. perhaps I should look for a cheap mobo.
 
It looks like that would not help me accomplish a overclock.
Is there any other physical way of overclocking? I see no jumpers, and the bios doesnt let me do overcooking.. and the software I have tried doesnt seem to do anything. (though the settings may have been incorrect)
 
Obviously increasing the core voltage alone does not make it run faster. If you do not have those options in the bios, you would have to mess with the clock generators or reference oscillators which is a fairly advanced project. Buy a new motherboard.
 
Short of a program like cpufsb, which lets you change fsb in windows. I could only see a bio flash to the normal bio for the board (if that would even work, would depend on the oem board) Might work, might not, i wouldnt try it unless you're prepared to get a new board.

Oems get to do things to computers that normal resell channels dont, like add their name to the startup screen, lock it against O/cing disable settings etc.
 
Okay.. using cpufsb results in nothing.. Apparently the PLL is an ICS 950201 and its impossible to change.

I dotn want to replace my mobo because that would mean I wold have to replace my case.. no decent motherboard has 3 pci and 1 agp only.
 
Originally posted by awdark
Okay.. using cpufsb results in nothing.. Apparently the PLL is an ICS 950201 and its impossible to change.

I dotn want to replace my mobo because that would mean I wold have to replace my case.. no decent motherboard has 3 pci and 1 agp only.
Click to expand...

Oh jeeze... You poor soul. D:

My main computer has 6 PCI slots, but only 1 usable. :p Chock it up to my ghetto home-made video card heatsink and fan... ;) Takes up 4 PCI slots, then I have a soundcard in one of the remaining PCI slots... :p
 
Might be a long shot but did you check for DIP switches on the motherboard? If you see some theres the data sheet for it:

http://www.icst.com/products/pdf/ics950201.pdf

The dip switch settings should be in there. (ICST usually is good for information.)

There must be a bios or a dip switch setting for changing cpu speeds. You may wanna look for the bios for a model with a faster cpu but the rest being the same. Glancing through i saw nothing of intrest, but you may wanna look it over. Good luck :)
 
Looking at that datasheet you can manually set the frequency select bits in the same manner you would the Vids on the voltage controller. You don't really have any granularity this way, but a 1.8A should easily do 2.4 with adequate cooling and a touch of voltage. You just need to tie pin 55 high to go from 100/66/33 to 133/66/33 a very simple mod. You might need to disconnect the signal it's recieving to avoid any contention however.

The easiest way to do the mod is to lift pin 55 off the pad and short it to pin 54. Easy and reversable.
 
That link is a dipswitch ver of exactly what I'm talking about. What I explained is just a hard wired example of forcing the fsb to 133 MHz with the same procedure.
 
I see..
would it work if I just shorted 54 with 55? I dont think it will be very easy to desolder and lift pin 55 from my board.

Er.. looking at the cpudatabase site I noticed 2 p4 1.8 processors.. if CPU-Z says mine is a:
Intel(R) Pentium(R) 4 CPU 1.80GHz Willamette 0.18 µ is it the 1.8g or the 1.8g northwood? If it isnt the northwood I dont think overclocking to 2.4 would work
 
Yeah you're probably not going to get much out of a Willamette, worth a shot tho :) You can short the two pins together if you disconnect 55 from wheever it's connected to next. There might be a resistor buffering it from another connection. You could just slid the resistor over. Or you could cut the trace leading out of the pin. In which case you would need to manually tie the pin back to gnd if it the CPU can't hang at 133 FSB.

I would suggest you experiment some even if you can't hit 2.4 with it, you'll at least learn something. Next time you'll have some experience and be more eager to play around with mobo mods etc.. have fun
 
Okay thanks for all the help and info. I will attempt this mod when I have more time. stupid essays...
 
Hey um guys? I did it and the computer wont even post now. Did I just fry my board? My fans power up but none of the drives starts to spin (unless I unplug the ide).
If so, what is a good p4 socket 478 board and what do you think is salvageable? I know my drives are still good.. my ram? my cards?

please help as the frys add comes out tomorrow.

:( bye bye dvd burner...
 
Perhaps your ram isn't capable of operating at the higher speed? or the CPU can't take it either. You reversed the mod and it still won't boot? Then check for shorts.
 
Yeah I am pretty positive everything is undone... do mobos have fuses? It still wont post... no video, no hdd spin up...
Oh yeah I hoped resetting the cmos would help... no. And the power button is unresponsive. It wont power down when I hold it dowm
 
Simply playing with one bit for the FSB multiplier should have no affect at all on the board posting or not assuming you reversed it. It sounds to me that you botched the mod very badly, as in the wrong pins altogether, or have a solder blob somewhere. You would have to try pretty hard to mess it up so badly that it won't post. As it is by no means a complicated or even risky modification. Recheck your work, use a magnifying glass to check for shorts.
 
No physical shorts, and assuming the orentation of the chip is based on the the text label, then I should have done it correctly.
 
Yeah.. I declaire the board dead. Though some interesting things..
The onboard nic still lights up when I plug it in.
Makes no post beep noises even when a speaker is plugged in but a faint hissing sound can be heard.
The fans that connect to the board amusingly still goes despite nothing else does.
And something I have never seen before. The ide devicces dont work at all when they are connected to the ide and power cables, but if only the power cables are attached, then the drive functions just fine. (I think)

Oh well im slowly hunting for a new board now.
 
You must log in or register to reply here.
Back
Top