The "Undervolting" Guide

[falcon2claw]

I looked around and couldnt fin anything yet on another program then RMclock which may be able to undervolt the X9000:
Flip,you were right, I had to hit "default" to get my voltages.

Now the problem is that still I cannot set the X6 multiplier to go lower then 1V. Any work around this that you know of? If not its alright too, Ill just overclock it to 3.2gig. I figured I was gonna do one or the other with it, undervolt or overclock

[flipfire]

Thats the lowest an extreme processor like yours will go. Mine is 0.937v and i have a 2.2ghz, A penryn T9300 2.5ghz is 0.950v default i believe. See the pattern? The faster the processor the higher the lowest voltages are. Yours is an overpowered 2.8ghz so 1.000v sounds about right

You can undervolt and OC at the same time to an extent. Heres a thumb rule: The Higher the clockspeed, the more voltage it requires to run. If theres not enough voltage being fed, it will BSOD. So this means you can OC and still find the optimum voltages for the multipliers.

[falcon2claw]

I see, so im really only looking at changing the top multipliers to different voltages

[flipfire]

Yeaps. Ive never actually seen a case of a X9000 being undervolted so i wouldnt know how low that CPU can possibly go. Im guessing you should be able to undervolt by at least .100v for highest multiplier

If the 14x is stable at 1.000v then you can set all your multipliers to exactly 1v even if its the same voltage as your idle multiplier

If your gonna OC, i suggest doing that first before tuning the optimum voltages for the multiplier/clock speeds

EDIT: I totally forgot, with X9000 they are OC'd by unlocking the 15x and 16x multipliers. Im used to the "setting fsb higher" to OC CPU's. Im not sure if RMclock will recognise the unlocked 15 & 16x multipliers. If it can then you can lower the voltages for them and do the stability test too

[deputc26]

I dont have RMclock here at the moment but SLFM as in SuperLFM? I dont think your T5270 processor support this. If your voltages were detected properly then thats the lowest it will go

Yes T5270 does have SuperLFM and voltages were detected properly, there is an option to change its voltage under "management" and to change it's multiplier under "Profile" but I'm afraid of messing with it.

Reason I ask is my penryn's SuperLFM is at .95v while the T5270 is at .85v. I belive if T5270 can do .85v then T8300/T8100 should be able to as well, cuz both use 800mhz for SLFM.
I'm afraid of changing it though, that's why I'm asking

Hey Falcon! you may be able to lower that 1.0v floor by selecting a custom p-state/voltage after clicking on Management on the right-hand side of rmClock. Try it out, then tell me if it works.

[theseadragon]

yup...that was me, but my issue was that HWmonitor was showing different temps than RMclock or coretemp. I wound up downgrading from 1.08 HWmonitor to 1.07 and then it started showing the same as coretemp and RMclock.

I'll have to try that because I have the same issue, HWmonitor shows temps that are about 15 degrees higher than RMclock or CoreTemp; I also have the same processor as you (T5550). I got upset because HWmonitor showed my CPU idling at 61C

[SmoothTofu]

Great guide, just want to point out you have a few "SuperFLM" typos in your guide It should be SuperLFM instead?

[Needmore4less]

I got this temp readings using Orthos 11 minutes, I think they are pretty good for a dual core turion 64 X2... I dont know if undervolt the core or not...

[jerry66]

just undervolted my desktop opty180 , at 12x i'm running fine at 1.150 . temp running 100% x2 cpu both cores run at 44-46 c ! used to hit 52-54 c .
thanks !

[flipfire]

Great guide, just want to point out you have a few "SuperFLM" typos in your guide It should be SuperLFM instead?

I just realised that.. thanks lol

I'll have to try that because I have the same issue, HWmonitor shows temps that are about 15 degrees higher than RMclock or CoreTemp; I also have the same processor as you (T5550). I got upset because HWmonitor showed my CPU idling at 61C

The latest HWmonitor must have a bug for that specific processor.

Yes T5270 does have SuperLFM and voltages were detected properly, there is an option to change its voltage under "management" and to change it's multiplier under "Profile" but I'm afraid of messing with it.

Reason I ask is my penryn's SuperLFM is at .95v while the T5270 is at .85v. I belive if T5270 can do .85v then T8300/T8100 should be able to as well, cuz both use 800mhz for SLFM.
I'm afraid of changing it though, that's why I'm asking

Hey Falcon! you may be able to lower that 1.0v floor by selecting a custom p-state/voltage after clicking on Management on the right-hand side of rmClock. Try it out, then tell me if it works.

I havent really looked into the management section but this could be the key to finding the correct default voltages. Normally if your voltages are detected properly, the preset CPU-defined voltages are the correct ones, it stops you from going lower on purpose

You can try force setting it lower but i dont recommend you do, the most you will get is a BSOD. After it does, rmclock doesnt save the unstable settings when it crashes so once you restart, your back to the previous stable settings you were on.

You can change the safely change the superlfm multiplier if you want. The 6x multiplier will make the CPU idle at 600mhz, and 8x will idle at 800mhz.

I got this temp readings using Orthos 11 minutes, I think they are pretty good for a dual core turion 64 X2... I dont know if undervolt the core or not...

Those are temps are pretty good, its up to you if you wanna UV or not. Just look at the Advantages on the guide, if you dont need them then dont bother with UV'ing