Strange Ultra-D Voltage Problem

[suio]

When I ran 3.2V DRAM voltage when JP17 is in 1-2 position, the system passed all stability tests (memtest, occt, prime etc.). When I ran the same DRAM voltage (all settings identical) when JP17 is in 2-3 positon, the computer failed every single stability test.

 

Any explanation? Could it be a defective component on the motherboard?

[quadcity]

A shot in the dark here. Do you have all of the power connecters to the mobo plugged in? When you switch that jumper I think you are requiring more power to the mobo even if you do not change the mem voltage.

 

Quad

[suio]

A shot in the dark here. Do you have all of the power connecters to the mobo plugged in? When you switch that jumper I think you are requiring more power to the mobo even if you do not change the mem voltage.

 

Quad

 

Yes.

[THunDA]

When I ran 3.2V DRAM voltage when JP17 is in 1-2 position, the system passed all stability tests (memtest, occt, prime etc.). When I ran the same DRAM voltage (all settings identical) when JP17 is in 2-3 positon, the computer failed every single stability test.

 

Any explanation? Could it be a defective component on the motherboard?

 

 

DO NOT use the 5v rail for 3.2vdimm and below.. Its not required and its NOT recommended..

[timpanogos]

first off, see ThundA's reply ... second watch your pwmic temp and see if it is not significantly higher on the 5v setting ... that could be part of the reason. Something has to be dumping more volts/amps to give you 3.2 off the 5.0 verses 3.3