Help w/ Vdimm MOD [Albatron KX18ds motherboard]

Quote:

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Originally Posted by andlcs

David Coleman, in the Albatron forum they said if the memory is CAS2 by SPD it will run at CAS2. Mine UTT is CAS2.5 by SPD so I can't test.

One interesting thing is that CPU-Z reads CAS2-3-3-11 when I set CAS2.5-3-3-11
http://valid.x86-secret.com/show_oc?id=23036

wedfighter, how do you change CAS on by software? I thought it could not be changed after the memory count.

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I'm using CBid 750

Hello, I finally did the mod but it didn't work. VDIMM voltage remains the same when I decrease resistance.

I tried connecting the VR 50k in pin 2 of LM358 and ground, the board booted fine but VDIMM did not increase. Then, I tried Pin 6 and Ground, same thing happened...


Couple of pictures:
http://www.geocities.com/a_andlcs/KX...ngVDIMM_01.JPG


http://www.geocities.com/a_andlcs/KX...ngVDIMM_02.JPG

What's wrong?

Thanks

What model/revision is the board??

edit, I see in the first photo that it is a "DS", I don't believe the vmod works on that model. The plain"D" does, as I have modded several.

mike

I just realized that I had replied to this thread a long time ago, it's rough getting old:D

Shouldn't matter what model the board is as long as the regulators are the same.

Quote:

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Originally Posted by Hell-Fire

Shouldn't matter what model the board is as long as the regulators are the same.

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I didn't know that, Thanks

I re-checked the resistance and voltages:

LM358
PIN2 + GND: 2.5k
PIN6 + GND: 100 Ohm

PIN1: 5.9V
PIN2: 3.0V
PIN3: 3.0V
PIN4: 0.0V
PIN5: 3.6V
PIN6: 3.6V
PIN7: 5.4V
PIN8: 12.0V

Is that the right VDIMM chip?

The mod that I did on my KX18D was to place the trimmer between pins 3&6.
This was according to Malves mod on his site.

http://malvescorner.net/kx18.html

The IC you are working with on your board is a LM358, the one on the KX18D is a RT9202. My information is not of any value to your board.

Maybe some one with recent electronic experience will come by and help out. My technology is from the late 60's and I never worked as an engineer:(