ABit AX78 Overclocking/Stability

[justapost]

Yeah, I know what it does but like I said it never worked. Installed latest lm-sensors manually (2.10.1) and then ran i2cdetect 0, never gave any feedback, failed and then second time froze my system. Rebooted and then ran it again, no output. Then ran i2cdetect -l and it again froze my system. No idea if its broken but none of these commands nor sensors-detect does anything odd in Ubuntu, I had tried it once before a few days back.

Ah ok, thought you ran sensors-detect and not i2cdetect.
Hmm 2.10.1 is an old version. SB700 support was added at 2.10.3 and the latests is 3.0.1. Starting with 2.10.4 there is also a module for your sensor chip available (w83627ehf).
You need SB700 support in i2c-piix4 to dump the i2c/smbus devices.

Will try in Ubuntu and check - just give me some hours to test stability first.

Thanks, I got my hands on the spec of the clock chip they used on the M3A and the Sapphire board, the GBT uses an very similar chip. I also have the specs of the clock chip used on the M2A-VM. So i'll try to write a small kernel module to read out ref HT and pci express clocks. It might be extended to change those frequencies in the future. Depends on how much time it will take.
Yes

I didn't understand what you said there

Say core0 need 1.3V to be stable at 3GHz but it is not stable at say 1.45V.
Core2 is stable up to 2.7GHz with 1.3V and is also stable at 3GHz with 1.45V.
In this situation with 1.45V applied it might be core0 causing the freeze.
It's a vague theory and i don't like those.

I'm perfectly fine with it since AMD themslves demo'd and allowed us to clock cores individually in their own public software: AOD.
If it was problematic, they wouldn't do that. Anything causing them headaches, they always remove, even if its something rare.

Good point.

Looks like mine and yours are similar. Mine is on 3000 1.344v/1.338v idle/load stable now for about an hour. Load, it can do 3055 on all cores at that voltage stable, but idling I'm still testing

The question is, is the goal (3GHz phenom) reached now.