M3A overclocking

[justapost]

Justapost, thanks for the feedback.

Bounced back.

Those monitoring readings are incorrect because your BIOS>Phenom support is bad. Those AOD readings are only displaying what you're BIOS is telling it.

You are right, my description was inaccurate. To be correct the bios writes the wrong value into the registers and AOD reads those wrong values correct.

Your BIOS is not the first, every bad ASUS BIOS I've seen which lacks support for Phenom runs the NB multiplier async with the core multiplier, and so that messes Phenom monitor reading up in ALL software but CPUZ (however CPUZ won't validate in this state because it detects errors).

Uhm must add a screenie for the latest bios. That one writes the correct valuest to the registers, so AOD and CPU-Z report the correct values now.

The real clock speeds in the above AOD screenshots (faulty ones) are NB MHz=HT MHz in CPUZ and CPUZ CPU/RAM is correct.

Well i could set the ht multi with 0301 bios and it was reported correct in cpu-z. I remember tictac mentioned the register storing the ht multi once in an barcelona thread but i did not check that value with wprcedit.

If you set 9x multi on Phenom, it'll boot up just fine and AOD will read the correct values.

nb multi u mean?

If voltage/memory control is missing in AOD, it's because of your board BIOS lacking support for it.

Memory settings work in AOD. The bios lacks a field for CPU VDDC.
But in terms of ref HT it is AOD/Clockgen/Systool lacking support for the clock chip.

If you can change CPU/NB VIDs, then again this is a BIOS feature. However Sammi did say that the CPU VID is usually locked (1.20/1.25).

Who is sammi could not find a user with that nick here.
Wasn't it macci saying CPU VID is locked in AOD? Anyway i can set values below 1,2V for CPU VID in bios.
I'm pretty sure that the new bios modifies CPU and NB VID and not CPU VDDC and NB voltage. So the labels (prozessor and northbridge voltage) are wrong, as the bios does not yet show up on the website i assume it's experimental wip atm.
Both fields are locked upward at 1,25V. The first bios had only a CPU VDDC field labeld as prozessor voltage going up to 1,55V (but nothing beside auto worked).

Bad supported ASUS boards would show high MHz for Phenom and high volts and high and low VIDs but in actual fact were not changing anything at all (AOD will show this properly). So keep testing to see what the state is.

AOD works with X2 CPUs just fine.

Bios settings prozessor voltage 1,2V prozessor-NB voltage 1,1875V


AOD shows 1,2V CPU VID but no CPU VDDC and allows CPU VID modification.
Also added wprcedit and cpu-z to show correct multi readings.


Bios settings prozessor voltage 1,1875V prozessor-NB voltage 1,175V


AOD shows 1,1875V CPU VID


Found that it is possible to set a lower ht multi with AOD in the range 6-9 with a 9x multi or in the range 1-5 with a 4x multi in bios.
Could not measure a difference with Cinebench10 OpenL but the systems power consumption dropped ~2W going from 9x to 6x.