Klem

Just type in Google "Silicon Lottery", and you can see very much info about your question. For example like this: What is the silicon lottery? - CPUs, Motherboards, and Memory - Linus Tech Tips CPUs of a particular series or model are not exactly identical. Some overclock better than others. The lottery means you have lucked out and gotten a good one for OC. There is no way to predict until you reach the upper bounds of overclocking. Quality of memory controllers of the identical CPUs have differs. One can be stable with 2400, but other one do not stable with 2133. It is normal. When chip manufacturers like Intel, TSMC, UMC, GF, etc. make wafers, there are slight variations in material quality across the wafer surface, there are local variations in how the lithography, metal vapor deposition, photoresist chemical deposition, etc. are done and this can yield a significant contrast between how good the best chip of a given batch will perform vs how bad the worst chip of the same batch will perform. You have absolutely no way to know beforehand how much farther beyond that your specific chip can go under any given circumstances beyond stock conditions. That's the chip lottery. Some i5/i7 may max out at 4.2GHz while others may hit 5GHz. With CPUs memory controllers happens exactly the same things.

For first step no.

I think you need check next things: 1. Windows power plan ->Max Performance. 2. Nvidia Control Panel ->Power ->Max Performance 3. Download DDU( Nvidia drivers uninstaller), run it and complitly uninstall Nvidia drivers. Then download and install the latest Nvidia driver 353.06 with option "Clean install". 4. Go in bios setup menu, and on the last page "Save and Exit" set to "Default Settings", then F10 to save, then Enter. 5. Disable laptop, unplug(disconnect) power adapter, unplug(disconnect) battery, then push and hold power on button(2-3 times). Then connect the battery, connect power adapter, and start laptop.

Look at your screenshots. In GPU Load box we can see only 0% and 1%. But i want look at same screenshot where in GPU Load box we can see 90% or more.

Can you run any 3D load in window mode, and then (after 3-5 min) make the same screenshots?

With mobile NVIDIA cards, MSI Afterburner can adjust only the core and memory clock. For voltage adjustment use NVIDIA Inspector or ASUS GPU Tweak or EVGA Precision. Run any games only with AC adapter.

To flash back your original stock vbios, all flash procedure the same.

Yes, of course it is safe, if you have GTX 980M 4G in Asus G751. Don't worry. Just flash it.

Ok. But I don't understand, why you wrote about HM76?

http://forum.techinferno.com/general-notebook-discussions/9367-need-help-bios-unlocking-3.html#post127462

Yes, in MSI laptops, real settings for manage TDP, was placed in EC firmware. But without specified EC datasheet its would hard or impossible to figure. Even after disassembling with IDA Pro , or some other 8051 debugger.

Interested, but I don't understand, it works for HM77 or for HM76, or for both? You changed only this one setting in Descriptor region? I ask because for unlock BCLK, i always changed other setting, in ME region, and all works fine, of course only for HM77.

And it can be solved, if modify EC firmware.

You can read this thread: http://forum.techinferno.com/dell-latitude-vostro-precision/9690-14-dell-latitude-e6430-performance-upgrades-system-mods-4.html#post131332 But I think your limit for memory is 1866MHz, because in Latitude E6420 used the old Sandy Bridge platform.

I think, in this case, only one way -> to change SSD with another controller.

Nice result! Especially latency. Congrats! But why some strings in Aida64 are empty? And CPU clock has different value in Aida64 and CPU-Z?

In this case may be issue with SandForce SF-2281 compability.

Yea, may be you are right! String on the photo does not seems sharp.

What the mSATA SSD do you use? Are you tried to update to the last firmware?

Just use Nividia inspector to overclock your card, and all be ok.

For dual channel 2400x8x2=19200x2=38400. I think, with your 4940MX, Aida64 will show around 35000 MB/s for read, around 37000 for write, and around 33000 for copy. Post please, stock dump.

Thanks. This is the newest Hynix chips H5TC4G83DFR-PBA. Nice result for so-dimm DDR3L. Can you post here SPD dump from Taiphoon Burner? You run 2400, with what timings? With 1.35V voltage? Are this settings is stable? Try test it on the 2400 with program TM5. TM5 link: http://testmem.tz.ru/tm5.rar<!-- google_ad_section_end -->

What the memory chips use on your HyperX impact 4gb DDR3L?

http://forum.techinferno.com/general-notebook-discussions/1847-nvidia-kepler-vbios-mods-overclocking-editions-modified-clocks-voltage-tweaks-511.html

Mod vbios for MSI GTX 880M, based on your stock vbios. MSI.GTX880M.8192.131219.zip