Update: P5B Vanilla (16Feb2007)

[ziddey]

Update. I've found vdimm pencil mod for vanilla board.

I may not have the same revision as you guys based on the pictures I've seen compared to what I've seen but...

Under my RT9214 IC, I have 6 smd resistors in a row. If you notice the 5th one (with board vertical and pci to left and floppy to right),

you'll see continuity between pin6 and one end. You'll see continuity between the other end and ground.

I've found that with #2 pencil shading, the best I could do was about 2v (slightly less). No doubt with a higher pencil, I'd imagine it'd be possible to get more.

But I made a hybrid of copper ink and pencil and managed to bring vdimm up to 2.18v (well 2.34v also, but that was too much for a
I would have rathered 2.10v as a baseline, but seeing how the p5b only has +0.3v as a max, and I want 2.5v as a max, I guess we'll have to compromise.

I've found initial resistance to be 568, with vdimm 1.8v.

With 508, I saw 1.96
420, 2.34
and 450, 2.18.

Hope this helps.

I had only cpu in for testing, and once vdimm of 2.18v was achieved, placed in my dimms to ensure of it. However, I won't be able to do testing since I don't have a video card to use at the moment. When I dissembled my watercooling to get the motherboard out of the case, I managed to wet the video card, so I'm waiting till tomorrow.

Update: Bios options for vmch are auto, 1.25, 1.40, 1.55, and 1.70.

Actual values were found for 1.25, 1.40, and 1.55 to be 1.30, 1.50, 1.60.

It's a shame though. I was kind of hoping vmch adjustment wouldn't do anything. Would have meant hope to get to 500fsb. Looks like not though, oh well.

I doubt that fsb is what's limiting me at this point

Finally found the revision. The silkscreen was barely visible that I missed it the first few times. It's 1.04G of vanilla.