Question about Vcore on the DFI?

[tranceaddict]

When they say that 1.6V is that max on air for these Opterons, do them mean 1.6V set, or 1.6V showing in BIOS (in blue)? Example, currently I am testing 3000Mhz SuperPI 32M with 1.525V Inputed in BIOS, but only 1.48V is actually read in BIOS (1.46V in MBM5). Which one is the actual one, or the one I should follow, the SET one in BIOS, or the one that is SHOWN in BIOS? Thanks.

[Mekrel]

The DFI Nforce4 boards are known to undervolt a tad, and to the same levels that you are experiencing.

 

This is good however, a board which undervolts rather than overvolts is welcomed by me, for instance 1.45v*110% should give 1.59v but my board undervolts this to 1.53 roughly which is what my opteron takes for 3.0ghz stable.

 

So the reading in MBM/CPU-z is more correct than the bios.

 

Apparently using the Special VID multipliers give more accurate voltage.

[Lackadaisical]

So the reading in MBM/CPU-z is more correct than the bios.

 

I actually dont trust the readings I get in CPU-Z or MBM. I just go by what I actually set it at instead of what the sensors are reading. Quite a handful of people have done tests with a digital multimeter and the results have been that the voltage you set is correct (not the voltage shown by the sensors), you can check for yourself with a digital multimeter to be sure

[tranceaddict]

Even the Voltage that is shown in BIOS by the sensors?? (in blue writing)

[red930]

Even the Voltage that is shown in BIOS by the sensors?? (in blue writing)

 

Not a good idea to go by any sensor. Always assume that the voltage you set is what you're getting, unless you have a decent multimeter handy and know where to check it.

[Guest burningrave101]

I wouldn't advice 1.6V on an 90nm Opteron. These are low vCore chips so i'd stay at 1.55V or under with aircooling even if your temps dont look that high. I dont think the temp sensors on these boards are very accurate to begin with, especially on the Expert board i have.

[tranceaddict]

Thanks guys. I would not use 1.6V 24/7, just doing some testing. I'm on my first part of Testing using Super Pi 32M, then I will move on to OCCT and SP2004. So far I found the max on it, 3070MHz @ 1.61V 32M stable. I tried to bump it to 1.65V, but it just would not go any further.

 

P.S I would never run that for day to day as Load Temps hit 53C at times with an ambient of 31C