Hi all,
I haven't been around here for a while, and if there is already a topic about this or somehow it's finally become available without the unlocked BIOS A05 and changing a setting the unlocked BIOS A05 then please feel free to disregard and remove this thread.
So, basically I'm going to explain how you can make your processor not drop down multipliers after a short time of maximum power, as such happened in the past.
After you've applied the steps mentioned in this guide you should find, like I have, that your processor multiplier remains fairly constant as if it was just beginning to be stressed. For example, my i7 2720QM starts at a multiplier of roughly x30, and in less than a minute it was originally dropping down to roughly x26 due to turbo power limits (TPL). Now it's remaining at roughly x30 for any length of time (lasted for the 352.404s test I did with 8 threads in TS Bench).
One word of warning before you begin, you must have the unlocked BIOS, preferably A05 but probably can be a different version. You must also be aware of the fact that without a cooling pad your laptop will likely throttle or shutdown before the CPU stress test (which lasted little more than 5 minutes) has completed. I am using a Coolmaster something, can't remember the name of it, suffice to say it is efficient and has three fans. Despite having this my CPU peaked at a temperature of 94C, and averaged at a temperature of 92C on the hottest core. You could reduce this temperature by disabling hyperthreading of course (if you have an i7). This test was also performed on the default BCLK (which registers as 99.7MHz on my laptop), I dread to think what would happen if I increased it with the TPL settings much higher/disabled.
Anyway, lets begin.
- Go into the BIOS (if you have the unlocked BIOS that is)
- Go to 7th tab which should be 'Power'
- In there go to 'Advanced CPU Control'
- In that scroll down until you find the option named 'Turbo PWR Limit MSR Lock', by default this is enabled, simply disable it
Save settings and reboot, remember to make sure your long and short duration limits are setup to their maximum BIOS values. Once you have rebooted, you will need something like ThrottleStop (I don't know of alternatives to hand, suggestions welcome).
Open ThrottleStop, go to the TPL button and then you should be able to disable the second limit,and increase both values of the limits. I was unable to do this with the locked BIOS and unchanged hidden BIOS setting. This will allow your CPU multiplier to remain at almost the same equivalent of the TRL settings depending on the number of threads running.
Like this thread/guide? Give feedback or rep.
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I also use unlocked Bios 05. Do you know where I can have all the Bios options explained? (like.. LAPDIQ0 under SATA menu means ... , changing it to ... does).
I am aiming at enabling stable SSD SATA 6Gbps with my SSD, now I have to run it SATA 3Gbps to be stable. It should be Bios based limitation.
Update: SOLVED.
How to unlock TPL settings on M14x
Discussion in 'Alienware 14 and M14x' started by Ixel, Oct 7, 2011.