yip1228

The bios cannot be modified due to RSA signing, but the ME FW can. Though it needs to have the flash descriptor unlocked to be able to do so.

Does holding WIN+left_arrow+right_arrow on boot show a BIOS screen message. Something about HDA_SDO or flash descriptor? If so, then your DV7's flash descriptor is unlocked in the same way as Elitebooks/Probooks. If not then you'll need to research whether another key combo exists. If it doesn't then the way to unlock is to pinmod the audio codec chip which requires disassembling the machine. Eg of how I did it on my Dell E6440 is at http://forum.techinferno.com/dell-latitude-vostro-precision/6980-14-dell-latitude-e6440-owners-lounge.html#post99289 .

You can see how good your 3820QM is by doing same test using Throttlestop 4-core TS-bench test as outlined at http://forum.techinferno.com/hp-business-class-notebooks/2537-12-5-hp-elitebook-2570p-owners-lounge-37.html#post77432 , building a table of multiplier versus TDP and comparing against existing entries in that table. If you can hold only x32 then you are -300Mhz from the i7-3820QM's max x35 4-core multiplier. Your chip would be one of the worse ones given that a highly binned i7-3630QM could do the same x32 4-core mode at a considerably lower cost.

Thanks again and first of all, following what you said before minimizing the energy draw from the iGPU does helps me bin up 100mhz where it set at 3.2- 3.3ghz now. I have followed the guide and dump the bios successfully before, but I have no idea how to mod the bios and the ICC part, moreover I dont know how to flash the me fw itself through dos. Anyway I researched about BGA and PGA, apparently BGA version of the processor generally required lot more voltage across idle to full load. I guess reducing voltage is the only way to bump up the speed in my case since my 3820qm already hit 45w when 3.3@4 core, there is no more room for BCLK oc where it will downscale the multiplier to balance the TDP I supposed.

One more thing, I found the new updated Xtu let me adjust the max TDP to both short term and sustainable one. However it doesnt take any effect no matter wat I did, I restart the program and reboot the system, it just stay same maxing @45W.

With a TDP-locked HP you're max performance can be limited by TDP or thermal throttling If you have a heatsink that attaches to a dGPU and CPU then even a 17" may get thermal throttled.

To maximize performance within the 45W TDP limit, the best you can do with Ivy Bridge is increase BCLK to get extra performance in the headroom that Intel provides for stability. Also ensure if you have an iGPU that you've installed the latest Intel drivers and set it to run in 'maximum battery' mode in the Intel control panel. That gives more TDP for CPU use rather than iGPU use. You'll need to flash a special modified ME firmware to be able to increase BCLK which if you ask nicely, Khenglish may be able to help you with.

I found that on 45W TDP-locked HP systems there is no benefit in getting anything better than a i7-3740QM. Even then there can be variation of up to 200Mhz between individual chips. Even more alarming, a 2570P owner finding his BGA-to-PGA i7-3820QM missed 400Mhz in 4-core mode (max=x31 instead of x35) making it perform the same as an inexpensive i7-3610QM.

REF: http://forum.techinferno.com/throttlestop-realtemp-discussion/6958-haswell-step-backwards-ivy-bridge-i-have-some-shocking-tdp-results.html#post95181

Thank for reply Nando, Unfortunately my bios is RSA signed, there is no way that I could flash the ME FW. Btw, I'm having a same 3820qm bga to rpga, However, according to your chart where the 3820qm running at 34x multiplier only hit 39W of TDP whereas my cpu will hit 45W at 32x. Is that just my cpu bad?

@yip1228 Unfortunately I do not know how to enable those features. All I know how to enable is BCLK control. Even if I could enable them, laptop ivy bridge processors do not support negative voltage offsets to help with your temperature.

thanks for the reply. is there any mod that I can adjust my TDP so ill be able to benefit from the short term turbo while not being overheat for long term?

hi guys, new to the forum and i saw this interesting post here. So I wonder if it would work on my dv7 7008tx, its has a 3820qm upgraded by me and recently throttle alot and I want it to be able to set the voltage offset plus adjustable TDP, does this trick works for wat im looking for? sry for my broken english.