whats the DEFAULT NB (MCH) voltage for the DS3P?

[LOUISSSSS]

i currently have mine at +0.1v, but i don't even know what the default is can someone educate me? what are the safe operating ranges for the p35 chipset?

i'm running 3 x 1gb of ram, Q6600 9 x 356 = 3.2ghz

 

[Xpoc]

According to Everest mine is 1.25v. Try Everest and see what it says.

 

[LOUISSSSS]

where in everest does it say that?

 

[zorrt]

i measured mine to be around 1.27v using a multimeter. I have mine set at 0.025v higher in bios just so Vista would accept my overclock. Range I think its like 1.45v or something safe, don't quote me on that though. I personally wouldnt like it to exceed 1.4v without active cooling.

 

[LOUISSSSS]

i still can't find my default or current NB (MCH) voltage. my NB temp is 43C while CPU is at full load.

 

[zorrt]

How did you get your NB temp? I thought there isn't a temp sensor for the NB on this board. I know theres a temp sensor thats next to the SB that speedfan picks up.

I don't know what software can read the NB voltage (nor do I think the board has a sensor for it) thats why I used a multimeter to measure it. But yea its generally around 1.25v to 1.3v.

 

[LOUISSSSS]

the temp i got a temp reading from on the DS3P rev 2.0 is from speedfan on the chip: IT8718F, it has 2 sensors, a "Temp 1" and a "Temp 2," from 2 fluctuated more closely with the Cores (0-3) so i assumed that was the CPU, and the other (Temp 1) was the NB

 

[Xpoc]

To find north and south bridge volatge in Everest. Click Motherboard, then chipset. It will show at top of screen. It only shows default voltage so you have to do the math when increasing voltage.

 

[zorrt]

Originally posted by: LOUISSSSS
the temp i got a temp reading from on the DS3P rev 2.0 is from speedfan on the chip: IT8718F, it has 2 sensors, a "Temp 1" and a "Temp 2," from 2 fluctuated more closely with the Cores (0-3) so i assumed that was the CPU, and the other (Temp 1) was the NB

I use speedfan also. The reason I believe that temp sensor is closer to the SB than the NB is because if I place a fan directing at the NB that sensor doesn't move. Whereas when I place a fan directing at the SB the temp drops dramatically. This is when I had the stock cooler on the 8800GT which provides no airflow to the SB.

 

[LOUISSSSS]

Originally posted by: zorrt

Originally posted by: LOUISSSSS
the temp i got a temp reading from on the DS3P rev 2.0 is from speedfan on the chip: IT8718F, it has 2 sensors, a "Temp 1" and a "Temp 2," from 2 fluctuated more closely with the Cores (0-3) so i assumed that was the CPU, and the other (Temp 1) was the NB

I use speedfan also. The reason I believe that temp sensor is closer to the SB than the NB is because if I place a fan directing at the NB that sensor doesn't move. Whereas when I place a fan directing at the SB the temp drops dramatically. This is when I had the stock cooler on the 8800GT which provides no airflow to the SB.

do u think u can draw me a quick paint edit of the motherboard circling where u think the sensor is? i currently have a nexus 120x25 1000rpm fan blowing perpendicular to my ram since they can get pretty hot when gaming or running 100%

 

[LOUISSSSS]

Originally posted by: Xpoc
To find north and south bridge volatge in Everest. Click Motherboard, then chipset. It will show at top of screen. It only shows default voltage so you have to do the math when increasing voltage.

using EVERST Ultimate Edition 2007

Motherboard -> Chipset
does not show any volates. it shows:

Device Description: North Bridge, South Bridge

Field:
NB Fields with no info about voltages
SB Fields with no info about voltages

 

[zorrt]

Originally posted by: LOUISSSSS

Originally posted by: zorrt

Originally posted by: LOUISSSSS
the temp i got a temp reading from on the DS3P rev 2.0 is from speedfan on the chip: IT8718F, it has 2 sensors, a "Temp 1" and a "Temp 2," from 2 fluctuated more closely with the Cores (0-3) so i assumed that was the CPU, and the other (Temp 1) was the NB

I use speedfan also. The reason I believe that temp sensor is closer to the SB than the NB is because if I place a fan directing at the NB that sensor doesn't move. Whereas when I place a fan directing at the SB the temp drops dramatically. This is when I had the stock cooler on the 8800GT which provides no airflow to the SB.

do u think u can draw me a quick paint edit of the motherboard circling where u think the sensor is? i currently have a nexus 120x25 1000rpm fan blowing perpendicular to my ram since they can get pretty hot when gaming or running 100%

Naa I'm lazy to do that haha. Naa seriously I'm not 100% sure and couldn't be bothered pinpointing to it, but I have a strong feeling its very closeby to the SB heatsink.

My reasoning are, with no (or very little) airflow to the southbridge heatsink, if I feel the heatsink itself it gets very hot, and the temp sensor read high, mine went up to 47ish+ degrees. My NB heatsink though is very cool (had a fan blowing on it). When I placed a fan blowing directly on the SB heatsink, the temp sensor dropped back down to I think it was 38 degrees in a very short time. Had no benchmark software or anything running on both occasions so its nothing being stressed.

This was all done by accident btw because I was just trying to cool down the SB. I originally thought the temp sensor was for the NB too but its hard to believe that thats the case with the results. But I doubt there would be a temp sensor on the SB cuz thats just stupid.

If someone could prove me wrong, I'd gladly hear them out. I'm not an engineer or anything, I just poke around at things and stumble upon things by chance.

 

[zorrt]

Originally posted by: LOUISSSSS

Originally posted by: Xpoc
To find north and south bridge volatge in Everest. Click Motherboard, then chipset. It will show at top of screen. It only shows default voltage so you have to do the math when increasing voltage.

using EVERST Ultimate Edition 2007

Motherboard -> Chipset
does not show any volates. it shows:

Device Description: North Bridge, South Bridge

Field:
NB Fields with no info about voltages
SB Fields with no info about voltages

Anyway Everest lists the chipset default voltage as 1.25v, not sure why yours not showing up. But yea no sensor but it can be used as a guide I guess as most won't stray too far from that on default. Like I said, mine was 1.27v on default.