Measure R3E DDR_VTT?

[spoolindsm127]

Hello everyone. This is my first post so I hope it's proper. Apologies in advance for any mistakes.

I want to know if it's possible to measure DDR Reference voltages on the R3E? The X58A-OC has this feature and I found it useful.

Also does anyone know exactly how the R3E sets DDR Ref volts? What does +0mV or +12.5mV exactly mean? 12.5mV being added to a default value? If so what is the default value?

Thank you.

[Shammy]

ddr vtt not = ddr vref
ddr vtt just termination volts for dram. ddr ref = vdimm divide by 2. so yes def value = vdimm divide by 2. + or - whatever just do the math.

[spoolindsm127]

Oh ok sorry for the confusion and thanks for pointing that out.

I am still trying to measure DDR Ref somehow. Is this possible? Every board under/over volts so I have no idea where DDR Ref is being set. I feel this is a key setting to successfully stabilize my overclock.

Thanks for the help.

[Shammy]

its a simple r1/r2 voltage divider circuit from vdimm and has almost little current draw so dont think you need to worry about it being at half. changing this obviously will affect oc, but usually you would not deviate too far from half.

[spoolindsm127]

Very useful information thanks much Shammy