No mods at all. I really need the Vdimm mod.

Maybe we'll be able to work something out together... The picture below shows the Vdimm IC. It's totally identical with the Vnb IC. The green marked area is also identical around the Vnb IC, the yellow points are ground. Unfortunately I wasn't able to get a datasheet of the part... I already spent two hours of measuring and penciling around.

My new Cellshock memory doesn't work, cause default Vdimm is to low (1,51V).