Where to find 4:5 (host:memory) ratio mother boards?

[JTKGY]

Where did you guys get mother boards with such ratio setting??
The gigabyte motherboard I got didn't support such setting, it only has 2.66 or (3:4)....

From my other post:
===================
I can't get it to stablize somehow... I could run the fsb at 145 which means memory
clock of 385mhz... it would run all the sandra burn in tests fine and then the next time I
boot up I would get errors and sometime can't even get back to XP.
Now, I'm trying to see if it could stablize at 143 fsb (380mhz memory clock)...

Note:
For some reason, gigabyte's ga-i8rxp doesn't have the 4:5 host to memory clock ratio
I keep hearing about.... as far as memory clock... I could only set it to Auto, 2.0 or 2.66????
I believe that my cpu could clock higher... but my memory is dying on me (Corsair XMS pc2700 cas2.0)

Also, these are my memory and voltage settings...
memory: 2/2/2/5 15.6 usec <-- do not know what this is... something called precharge time??
voltage:
DIM = +0.3v
CPU = 1.550v
AGP = normal


Any ideas?
================= end


Out of frustration, I checkout the Asus P4B266's manual... same thing..
Auto, 1:1, 3:4....

 

[THUGSROOK]

i think only the SiS645 motherboards have a 4:5 ratio.

the 4:5 ratio is basically for 133fsb/166mem/333ddr speeds.

 

[JTKGY]

<< i think only the SiS645 motherboards have a 4:5 ratio.

the 4:5 ratio is basically for 133fsb/166mem/333ddr speeds. >>



Thugsrook,

Thanks for the quick reply.
I have a separate question hope that you dont mind...
In case of oc failures, what signs do you look for to determine the problematic component?
I usually got failures like
WinXP auto reboots,
WinXP can't start due with message like "Corrupted /windows/system... directory" ==>(overclocked pci ide?)
However, I never got total lockups (cpu is ok?)

Thanks in advance,

 

[THUGSROOK]

you will need to single out components in order to find the weak link.

slow the memory ratio, still crashes? then it aint the memory .....etc.

you did try raising the vcore and DDR voltages right?

 

[JTKGY]

I did... CPU vcore = 1.60 (though it seems to run fine anything below also)
DIMM core = +0.3 or 2.8v??
I didn't touch the AGP core voltage, it craps out everything I touch that.
Memory timing is set at 2/2/2/5/15.4 usec

I think it's the memory.. ran memtest-86 with 145fsb (2.66, 386mhz) and got errors...
ran with 144fsb (2.66, 383mhz) and passed... Going to rerun 145fsb again...

Also the strange thing is that... sometimes after runnig oc'ed for a while.. turn off the machine
for around 10mins... restart it... it will not even start WinXP (I mentioned this in another thread)...
Like as if the cpu & memory heat soaked or something...

Thinking of returning the memory... it's a Corsair XMS PC2700 512MB CL2.0...
Or could it be a bad mobo?

Very frustrated...

 

[THUGSROOK]

run with the memory at "by SPD" and dont tweak it. set all that memory stuff to auto. is there turbo settings etc? set them all to norm or auto or whatever.

run memtest86 for at least 1 hour to concider it stable. if it doesnt pass, its the mem or board. the corsair XMS pc2700 is kickass stuff tho - thats what i use and it can run @ 400DDR all day long 🙂

 

[JTKGY]

<< run with the memory at "by SPD" and dont tweak it. set all that memory stuff to auto. is there turbo settings etc? set them all to norm or auto or whatever.

run memtest86 for at least 1 hour to concider it stable. if it doesnt pass, its the mem or board. the corsair XMS pc2700 is kickass stuff tho - thats what i use and it can run @ 400DDR all day long 🙂 >>



Thugsrook,

Mine will barely post at 399ddr... using 150fsb x 2.66... It's got to be either the memory or mobo...
I'm returning the memory first... if still the same, then mobo..
wish me luck.

Thanks again,

 

[THUGSROOK]

ok - i see youve gone thru all that then 😉

gluck 🙂