How undervolted is your Barton 2500+?

Badger · Post by **Badger** » Sun Feb 20, 2005 1:42 pm

In the quest for quiet comes the need to lower temps any way possilbe.

At stock the 2500+ is at 1.650 volts. Right now I'm at 1.350 volts stable, stock speeds for everything in the system. It reallly does help those temps.

So... how low can you go?

mathias · Post by **mathias** » Sun Feb 20, 2005 2:01 pm

~1.59V

Not only does my A7N8X not allow undervolting, it doesn't even let mobile athlons run at stock voltage, the lowest setting it allows is 1.575. On top of that, it apparently always overvolts a bit.

Badger · Post by **Badger** » Sun Feb 20, 2005 2:10 pm

bummer... I should add that my Barton is not the mobile, just the regular ol' run-of-the-mill, locked multiplier type.

Webfire · Post by **Webfire** » Sun Feb 20, 2005 2:26 pm

My Barton also runs at 1,35V at stock speed prime stable, never had any problems.

@mathias: You can undervolt with the A7N8X deluxe, my 3000+ is running at 1,55V. Not a big difference but better than nothing. You have to use the newest bios and then you can undervolt with 8rdavcore.

mathias · Post by **mathias** » Sun Feb 20, 2005 2:49 pm

I've heard of 8rdavcore causing Mboards to have to be reset if it was set to something like 1.1V and not set back up before shutting down, can it stay undervolted if you don't go overly low?

burcakb · Post by **burcakb** » Sun Feb 20, 2005 2:53 pm

I run at 1.49V. But I also overclock slightly to 175 MHZ

Webfire · Post by **Webfire** » Sun Feb 20, 2005 3:08 pm

I don't think that you have to reset the mainboard because 8rdavcore only changes the Vcore in Windows when you restart it should be the stock Vcore again. But with a simple commandline it automatically changes the vcore to x.xxV when windows starts.
You can test until which Vcore your system is stable and then use in the autostart command.

mathias · Post by **mathias** » Sun Feb 20, 2005 3:12 pm

There's the problem, I'm usually not running windows.

JanW · Post by **JanW** » Sun Feb 20, 2005 3:21 pm

I run at 1.475V (read as real 1.52V by lmsensors) at stock speeds. I can't try lower settings as I had to cut some L11 bridges on my CPU (more details here) to let me chose lower Vcore on my A7N8X-E Deluxe, and I went for the safe small step down, rather than the big step.

mathias wrote:There's the problem, I'm usually not running windows.

Same here: I don't have access to Windows at all (if you don't count that NT4 installation I have on a VM). Any tools for software undervolting under Linux out there? Seems like there was a 8rdavcore version for Linux in the old days, but I can't find it now.