vdimm on ultra D

[cellyboo]

ok, i've been wondering about this for quite a while , so guess i just ask you guys,

if i select a particular vdimm on my lanparty ultra D, the bios, ITE and any other monitoring software always report it being +0.10v higher

ex: if i choose 2.5v -> comes up 2.6v, 2.6v shows 2.7v, 2.7v shows 2.8v and so on

i've tried with 2 different RAM and it's the same

my 3.3v rail shows 3.33+v

 

i wonder what's wrong or is it just normal?

[ganders75]

Ignore the voltages reported by software monitoring... Neither of these will be corerct - you just can't trust them. The only way to really be sure is to use a DMM to test the actual voltages..

[cellyboo]

agreed..

but still i need them for a quick control..

what i really ask is, if you choose 2.6v, what did the bios reading told you? the same 2.6v or 2.7v?

[ganders75]

I seem to recall reading somewhere that all DFI boards over-volt slightly on the vDimm... Pretty sure that's normal - but i'll check mine for you when i get back home...

[Sharp]

2.5v = 2.55v

2.6v = 2.66v

2.7v = 2.76v

2.8v = 2.86v

 

That is how it is on my board.

 

For 2.8v I use,

2.7v and enable +0.3v = 2.79v.

 

And ITE reports that as 2.75v

I trust the BIOS.

[cellyboo]

yeah i've read about the overvolt and i found this, stating that dfi added 0.10v to vdimm

http://www.xtremesystems.org/forums/showthread.php?t=61632

 

should i do the jumper mod to get a stable vdimm, or this ov thing is just ok?