PII350mhz upgrade on gigabyte board

[Guest]

I am having trouble getting this gigabyte motherboard ga-686lx4 to properly recognise my PII 350mhz (100mhz fsb). It has jumper settings for both bus and multiplier for processor's.
When set to 100mhz bus it will recognize as 350mhz but then freezes. on warm-reboot it does nothiing.
When set to 66mhz it recognises it as 233mhz and seems to operate fine, at limited value.
Trying all of different multipliers yields same results. Ideally I would set to 100mhz bus and 3.5 multiplier, but this still freezes system.
I know someone has useed this board out there....
<b>Thanks for your help</b>

 

[killall]

is your ram pc100? is your cpu pc 100? my system froze when i tried pc 100 ram on a 66 board for some unknown reason... the board just refused to accept the 2 ticks together... either one on its own worked find but together they wouldnt... the 66 stick wouldnt work on any other motherboard either... oh well

if in doubt blame microsoft...

 

[girish]

what chipset does the board have? the name suggests to have the 440LX chipsets. it does not support 100 MHz FSB. you need eitehr the 440BX or 440ZX chipset to get that. 350 MHz was the first P-II to use 100 MHz FSB.

if its the right chipset then probabely you RAM doesnt work at 100 MHz, try changing it to a PC100 RAM.



<font color=blue>die-hard fans don't have heat-sinks!</font color=blue>

 

[girish]

i just checked out the gigabyte site and it does have the 440LX chipset. it does not oficially support 100 MHZ FSB. so its probabely the chipset itself being overclocked!

the 100 MHz jumper on the board is present there because probabely its the same PCB they use for their BX chipset based board. tey should have warned about it in the manual.

you need to get a new board to get that P-II 350 work at 350, else have to stick to 233!

girish

<font color=blue>die-hard fans don't have heat-sinks!</font color=blue>

 

[Mordy]

100Mhz on LX means PCI works at 50 Mhz (TOO much to work), and AGP has 100MHZ speed (for crazy overclockers only). Check if that board can do 83 Mhz .

-Beer! Good!
-James Hetfield

 

[Guest]

Yeah, exact chipset is Intel FW 82443LX. Is there no way to upgrade the chipset without the whole mb? The other strange thing is that on the mb it has pin settings for the multiplier, and it goes up to 366mhz, even though mb documentation only says to 333. Any suggestions to how I could get it to run at 333? THanks!!!

 

[Guest]

It can do 66,75,83,100.
-- I just tried 83mhz bus. It boots up and displays processor as 291mhz when I tried both x4 and x4.5. Any other help on to kick it uup any further?

oh and I do have PC 133ram and it works fine when not having clocking problem.

Thanks

 

[girish]

its multiplier locked at 3.5. even when you are setting the multiplier to 4.0 or 4.5 its still running at 3.5x83=291!!!

now if the board does support 100 MHz, although 440LX doesent officially, you can try it. set the PCI clock ratio to CLK/3 instead of 2, you can now get the PCI run at 33 MHz instead of 50 MHz that is way too high for most of the hardware onboard. also if possible use a chipset cooler for the northbridge chip, the FW 82443LX chip on the board, it should help it run overrated.

girish

<font color=blue>die-hard fans don't have heat-sinks!</font color=blue>

 

[Guest]

So any clue on how I would set the clk/3 instead of clk/2? or the other option is to fix the motherboard multiplier. I like the first option, its more creative and will get me the full 350mhz out of processor. So is it possible to set the PCI clock divider? THanks!

 

[girish]

its in the BIOS settings, "Advanced Chipset Features" I havent seen this setting on any jumpers. yes, some boards do have settings like 66/33, 100/33, 133/33 etc on the jumpers that set CPU clock/PCI clock but your motherboard probabely doesnt have them.

basically, 100 MHz is the speed your BIOS will boot, it will then set the PCI speed to CLK/3. it should work anyway, give it a shot.

girish

<font color=blue>die-hard fans don't have heat-sinks!</font color=blue>

 

[Mordy]

I don't think it is possible to change clk/2 to clk/3 on 440LX.

-Beer! Good!
-James Hetfield

 

[girish]

i had the option on a few LX boards I used. checked out the 686LX4 manual and it does not have such setting.
they provide 100 MHz setting but warn you not use it.

its strange, they provide it and they dont know it will overclock the PCI bus and then they warn you not to use it!

I guess you have to run your CPU at 291!

girish

<font color=blue>die-hard fans don't have heat-sinks!</font color=blue>

 

[AmiGaGa]

Yeah, exact chipset is Intel FW 82443LX. Is there no way to upgrade the chipset without the whole mb? The other strange thing is that on the mb it has pin settings for the multiplier, and it goes up to 366mhz, even though mb documentation only says to 333. Any suggestions to how I could get it to run at 333? THanks!!!

Hello,

i have rev1.9 MB and i use Celeron 533 on it (with Slot1 / PGA adapter).
BIOS is 2.4d beta version.
PII-350 is not working on it, even with 100MHz SDRam