M3A overclocking

[justapost]

There is a new Bios version(0406) available for
download.
alternative download

This bios includes the tlb fix. It can not be disabled via bios, but AOD and CrystalCPU works.

The cpu multi can now be modified (8-11 with 9500).



Also the bios allows modifying CPU and NB VID in the range 0.8-1.25V now but the CPU VDDC field has gone.




The memory timings submenu has changed, it does no longer show all these options


It does not allow to configure dct0 or dct1 but only both dct's.


The memory runs in ganged mode and there is no bios option to switch to unganged.

There is one nice new setting called process downcore. It allows disabling 1-3 cores.

Disabling 3 cores saves ~14W DC, two cores saves ~5W DC and one core saves ~3W DC in idle.

The NB multi is now at 9x and wprcedit shows the correct value 00101b. I tried 00100b with 1x HT but the system did not restart.

Prime95 failed after an hour yesterday with ref HT 215MHz and after half an hour with 220MHz (Ram-V 2,1V everything else auto).

Today i tried it with CPU VID and NB VID at 1,25V and it failed after a few seconds. With only one core enabled it's stable since half an hour with ref HT 230 MHz at ~41°.

Guess I need more CPU VDDC to reach higher speeds so i have to wait for the next bios.

[noee]

Thanks for posting that new bios, seems to be a little friendlier with the G2 Brisbane (I've been trying a BE-2400 and the 5000+ BE).

Looks to me like this bios is set up to really work with AOD and do all the serious O/C from within Windows. I have had zero luck with AOD (beta version .14) on this board/cpu combo. AOD locks my machine no matter what every time I hit "Apply".

I was able to get 3150Mhz Orthos stable with stock volt (1.344) and DDR2-667, idle temps around 36C, load temps at 51C using a Zerotherm Butterfly, HT at x4. This was the 5000+ BE, 13x @ 240 fsb.

I know I can go higher but there just aren't many DRAM options (compared to even my Biostar TA690G). Do you guys know if I can set Max ASynch Latency in the Bios?