Undervolting the AMD Turion 64 ML-34 processor (L2000)

[abugi]

No, these hangs I am talking does not happen when you prime at that stepping, but rather during transition, like from 4x to 9x jumps or from 9x to 4x jumps, processor is unable to stabilize with border voltage.

Anyways, RMClock 2.0 has that feature built-in to provide stabilization voltage to proc.

So, which version you are using?

Thanks for the suggestion. I will vary the load to get the voltage swings. I have done some of that since I am in Preformance on Demand mode but more extensive testing would be prudent.

[VidKo]

Hi! I bought an Acer 5024wlmi for my girlfriend, and she gave it to me for 2 weeks to make fresh install and to thoroughly test it. Of course I had to underclock it

Currently I am testing it on 4 x 0.875V and it looks stable for now, on 0.850V it just hangs:



Regards, VidKo

[abugi]

Hi! I bought an Acer 5024wlmi for my girlfriend, and she gave it to me for 2 weeks to make fresh install and to thoroughly test it. Of course I had to underclock it

Currently I am testing it on 4 x 0.875V and it looks stable for now, on 0.850V it just hangs:



Regards, VidKo

0.875v works for me for a while but it would randomly reboot until I up it to 0.9v. It is solid at 0.9v. I have HP Special Edition L2000 with ML-32.

[VidKo]

abugi, yep, I had random lockups too at 0.875, at 0.900 is rock solid. At 1.8GHz rock solid at 1.150V

Regards, VidKo

[hegemon]

Stable?

I'm running my ML-37: 4x@0.900 right now ... using Prime95 to stress test. Things actually seme to be OK. Haven't noticed any instability. Anyone successfully running on less power? Are most able to run at .900, or do most run higher? This is obviously much better than running at .975

Edit: This is down from 4x@0.925 for me

[vassil_98]

A number of chips are able to do fine at 0.9v but probably most of us are at 0.925v. I'm actually surprized the ML-37 goes as good as 0.9v! I had the impression that ML-32 (or 34) and lower could undervolt better at 4x, that is 0.9v. Maybe we should set up a poll to find out

[Drutort]

First I have to say THANK YOU, for this thread, I was just googling as I had bought a new Acer TravelMate 4402, I love it because of the price and the features, the x700 ati video card is the major selling point, because with the price of this laptop there are almost no other laptops that have a dedicated video card (though its only 64mb) its great, upgraded the laptop with 1gb ram adding of a total of 1.5gb

As I was reading the newegg comments about it, some ppl reported that it would run hot, and as I found out its not hot for me, but the cpu did peak out at above 75C which worried me a bit, idle 50-55C (the room temp is quite hot here, in AZ)

The cpu is turion ML-30, which too bad its not the MT, but after reading the main thread I couldn’t believe that I could change the voltages, I had suspected it, and thought that the values might be too high (1.450) as reported by RightMark, but other applications round up, showing 1.5V

Right now im testing it as low as 1.05V (system BSOD’s at 1.025v) this is amazing as the full load with prime is at about 60-63C and fan only turns on at about this range, the lowest voltage as many others have said seems to be .9V anything lower BSOD’s even if I find that the stable voltage are a bit higher then these tests, im still very happy with such results now lets hope I can find linux software that will let me do the same

[Drutort]

so far i had tested 4h and 30min prime95 so its pretty good, at most though to be on safe side the voltage will be at probably 1.075, if any instability issues show up with 1.050v.

CPU turion ML-30 (LanCaster sh-e5)

[maasenstodt]

Just to add to the list, I have a Compaq M2105us (bought on Black Friday for $400) that I upgraded with a Turion MT-40. After 48+ hours of flawless Prime95 testing, I've settled on the following for the time being (using Performance on Demand):

4.0x (800MHz) : .850V
5.0x (1.0GHz) : .900V
6.0x (1.2GHz) : .950V
7.0x (1.4GHz) : 1.000V
8.0x (1.6GHz) : 1.050V
9.0x (1.8GHz) : 1.100V
10.0x (2.0MHz) : 1.150V
11.0x (2.2GHz) : 1.200V

I know the ML series isn't bad, but given what I've ended up with, I'm glad that I went ahead and bought the MT-40.

[chinna_n]

Stable?

I'm running my ML-37: 4x@0.900 right now ... using Prime95 to stress test. Things actually seme to be OK. Haven't noticed any instability. Anyone successfully running on less power? Are most able to run at .900, or do most run higher? This is obviously much better than running at .975

Edit: This is down from 4x@0.925 for me

I think that is really good for ML-37 ( I was able to go 0.925v, but I want to have some buffer, so kept at 0.95).