Is it possible to change a64 memory ratio in runtime?

[fatbird2046]

Is it possible to change a64 memory frequency ratio(like fsb:mem=200/166 200/133)in runtime?If it is possible,which register should i edit?
I edit bus0-device24-function2-reg[94-96h] [22:20]bit with wpcredit on my 939 3000+,but as soon as i press "refresh" button,the system is dead......

[MrQ3W]

Download A64 Tweaker(google), it allows you to do this hassle-free.

[fatbird2046]

Download A64 Tweaker(google), it allows you to do this hassle-free.

First of all,Thank you very much!
I know this software,but i just want to know which register i should edit when i use wpcredit.

[MrQ3W]

okay maybe codered ho wrote it knows the reg adresses..

[bofh]

I can't seem to change my memory dividers runtime with A64 Tweaker, it just crashes.

[MrQ3W]

I can't seem to change my memory dividers runtime with A64 Tweaker, it just crashes.

You need to change them in the right order carefully or your system will become unstable.

[fatbird2046]

I can't seem to change my memory dividers runtime with A64 Tweaker, it just crashes.

Really!???
I just downloaded A64tweaker v0.31 last night, don't have time to try it on my system yet.

[Bungo]

depends on mobo etc.

My s754 epox mobo crashed on almost everything exept chaning 1t/2t mode.

With this msi k8n neo2 i can change like everything without getting crashed.

[MrQ3W]

Can change it all with my soltek board, but *183MHz divider is kind of strange: doesn't show up in cpu-z, everest or anything else but it does work and provides higher bandwidth but super pi is always unstable with it, I can underclock and it still is unstable with that divider even though most other things seem to work pretty okay. Anyone else managed to get it stable or is it just a freak setting?

Anyway those settings are dependant on board that is true they work best with the DFI I think.

[fatbird2046]

I have tried a64tweaker v0.31 on my EPOX-9nda3j.But unfortunetly it dosen't work.My system halt when i change the mem clock ratio from 133to166 with a64tweaker.....
I do the test when fsb=200,so it could not be the mem module's problem.

[bofh]

I got a MSI k8n Neo2 and it crashes when i try do change the ram divider. It's not an stability issue as i am decreasing the divider not increasing. I can however, change 2t enabled/disabled, and some of the timings. With would be nice for me to use the other dividers though.

[CodeRed]

I have tried a64tweaker v0.31 on my EPOX-9nda3j.But unfortunetly it dosen't work.My system halt when i change the mem clock ratio from 133to166 with a64tweaker.....
I do the test when fsb=200,so it could not be the mem module's problem.

can you boot when mem ratio is set to 166 from the BIOS?

If you cant then dont expect it to work under windows via A64 Tweaker either. I'd be looking for another cause of the problem

[fatbird2046]

Thanks Codered!
166 or 133 from BIOS is 100% OK. And my MEM can work properly at DDR440 at least.

[MaxxxRacer]

well i tried changint that on my neo2 with the latest a64 twearker and it crashed.. might have been the ondie memory controller crappint out like it always does though