*** The Official MSI GT75 Owners and Discussions Lounge ***

I did notice to be fair! But still, the temps are impressive. I might try to undervolt some more and see if it's stable too ^^ Just don't see the reason for it as I am locked at 3.9GHz anyway.
@maxsilver have you undervolted? Do you use the bios setting? What's the magic you have done?

 

I haven't had a chance to do any gaming yet on the most recent paste job, but I did have the same paste on last round. The last game I was playing was new DOOM, and it was running at about 75C with around 3000 RPM fan speed or so. For what's it's worth I have the laptop on a laptop cooler, and always have the system in an air conditioned room, with ambient being around 22C or thereabouts.

 

Ah that makes sense. My room is like 25-30C all the time now. Still willing to know your undervolt settings if you have any ^^

 

What kind of undervolt were you able to achieve? I was able to get -160 mV on mine. My GPU is similar to yours, I have it set to a flat 0.9V as well in MSI Afterburner. Not sure if I have any overclock thought, if I remember correctly it clocks to about 1875 MHz in games or so.

 

I only use the bios ac dc loadline =1 setting. It ran over 1.3V default though, now it runs around 1.2V at max load. Haven't tried undervolting yet.

 

@maxsilver also, I am curious: have you changed iccmax (max vr voltage) settings in bios? I am asking cause that is what's making me throttle most likely in prime95.

 

To be perfectly honest I haven't even entered the bios yet other than to apply a bios update. The only voltage tweaking I've performed is in Intel XTU at this point. Given that my cpu is locked I don't think I'll be doing any bios tweaks any time soon. What kind of throttling do you see? I did see that the Aida 64 FPU stress test was causing my system to current throttle.

 

Interesting... aida64 doesn't make me throttle at all Anyway it's possible that since your voltage is lower that your current is low enough to avoid serious throttling. After all, U=RxI (voltage=resistance x current, meaning the lower the voltage the lower the current with constant resistance).
I saw the iccmax/vr current stuff being tripped continuously in hwinfo when running prime95 which is why I figured that's why. But I just can't justify increasing it since no normal program can make it throttle.

 

I think HID sets the undervolt to -80mV on GT75's along with the BIOS LL setting, seems to max out for people with the BIOS setting around there, although some report unstable at -80mV so they set a lower undervolt. If -80mV isn't stable, try reducing by +5mV increments until stable.

 

From what i have saw, you can easly do a undervolt in the range of 140-170 mv ...and with all respect on @Falkentyne, i get much better temps and without thermal throttling in put the undervolt than AC/DC loadline to value 1...at least in my tests.

 

I agree with only twiddling the undervolt as the best choice over fiddling with BIOS settings.

I went through all of this many years ago, and I started out helping people tune their BIOS to optimize performance too.

Lots of downfails to letting loose inexperienced people into the BIOS, first and most obvious is people like twiddling the knobs, so once you set them into the Briar Patch of BIOS settings, they start twiddling the knobs and get sent into the weeds. Then I had to spend a lot of time helping them all get back to normal.

If you think it's boring to keep repeating undervolting and other simple tuning instructions that apply broadly to all Windows systems - people don't look back more than a page or two in the threads, and for some reason don't think to use Search - imagine the multiplicity of repeats I had to spend time on individually for dozens of different motherboards and BIOS's.

But, HID needs to do what they need to do, and for them it's easier to set 1 common setting - LL 1 and undervolt of -80mV - which works for most, and HID support can then help the rest that need to reduce the undervolt under -80mV one on one.

As you've found that method may not get the last little bit of thermal tuning available, but it does enough to stop thermal throttling without re-pasting, and if they can up sell the customer on re-pasting, it's even "better".

I'd rather save the $ and do it all myself, but for the new person, it's probably worth their time the first time they buy an expensive new laptop, and want to get the best out of it.

Even I suggest -100mV as a good first undervolt, and if that works and you aren't thermal throttling, it's optional to go for more undervolt tuning.

I suggest busy people leave that final undervolt tuning as a fun task for later down the road, and after the CPU breaks in I've found you can eek a little more undervolt out of it anyway, so even if you fine tune early on, it's worth going back a few months later and try another -1mV at a time to extend the undervolt.

I'm happy the undervolt is working so well for you, and everyone else.

 

Mmm yeah I think about that the way too. I mean, ac dc loadline setting is super easy and doesn't require me to go back ever again unless I update the bios... It's insanely unintrusive and simple. I can see how others would be tempted to play with more stuff which I always tell people hell no pls don't. Obviously it might not deliver the lowest possible voltage and temps if you know what you are doing, but for someone who doesn't want to play around with it, it's the easiest thing to do ever. And tbh, I think my temps are acceptable given I am on the factory goo and 30+ room temp ^^ I don't really see the reason for my particular laptop to go further than this.

PS. is the hidevolution bios setting and -80mV undervolt on the i9 version? I assume with the 8750H the undervolt may go further if I won the silicon lottery. No one knows ^^

 

Well, i like to do the undervolt in Bios because not need a external program running...i need find a way to edit my VBios to put a max voltage at 0,9 V.

 

Mmm well I know the 1070 .8A vbios the msi used as cover up did a similar thing ^^ but tbh, msi afterburner is super easy and doesn't use much resources. Also, it provides the OSD with riva software so I am totally sold on that one! Never had problems with it either on 4 separate systems.

 

Yeah, im just happy now that not have any kind of bd-prochot or any issue...well still have that core temp diference but since my cpu dont go less than 3,9GHz and gpu less than 1900MHz in gaming i just dont care

Edit: Of course that i did a lot of tweaks to put the laptop at this state like find the right undervolt setting, repaste many times, changing the thermal pads...

 

After finding the final settings in Windows it can be nice to put the final numbers in the BIOS, but it's very time consuming to tune from the BIOS and go through waiting on the POST each time you test a new value. It's much easier to do it Live in the OS.

During every day use I have several different tuning profiles for CPU and GPU that I prefer to switch between live without rebooting. Most laptop BIOS's don't have profiles to switch between, and the GPU tuning settings aren't available either.

If you need to boot into another OS, then BIOS settings are helpful, but even then I prefer to find a way to do it in the OS.

 

I haven't seen any mention of settings from HID other than GT75, but it's possible they do it for other laptops too.

 

We do the BIOS setting on most MSI models, but every CPU is different, so the undervolting we do, can vary.

 

Here are my pre-surgery results:

Completely stock:

BIOS AC Loadline and DC Loadline set to 1. They were separate values in my BIOS:

In all honesty, this doesn't seem to be straining the CPU much. I get much higher temps in AIDA.

 

Are you running Small FFT with AVX/FMA disabled? Try enabling them.

The idea with disabling them is to get a good test for testing core temperature differential that also indicates instability when doing undervolting - threads exit with math errors before BSOD occurs, usually, without overheating the laptop with AVX / FMA enabled - also with those instructions enabled they skew the core load and makes core temperature differential readings invalid.

 

AVX enabled is barely acceptable. Windows does use AVX instructions so AVX 1344k FFT length is "ok" to test on. But not small FFT.

FMA3 enabled just amplifies ANY tiny amount of core temp pressure differences so if you dont have PERFECT contact on all 4 or 6 cores you're a goner.
Trying small FFT + FMA3 will just make the zener diodes trip and the laptop shuts off...

 

Well the fact is you don't have the 8750H + 1080 as EU models have... which is the main difference imo. Anyway if I could have a do-over I would order from you. MSI so far hasn't been very helpful in EU for me. Communication takes ages and nothing comes out of it. Is it the same for you as a reputable MSI reseller or does MSI actually listen to you? My fan has been making a slight grinding noise since the first day, so far RMA and sending the laptop off for 5-6 weeks seems to be the EU standard for that while it should've never happened in the first place.

 

Nice, I am currently undervolting -140 with core voltage set to 1.250v. -160 If I remember correctly BSOD for me. but I also seem to have higher voltage than you, around 1.115 usually.

 

I ran with 1344k and AVX=0 because those were the parameters Falkentyne set when he requested temps. Once I install the new memory and repaste, I will repeat this test as well as maybe try some more intensive settings once I am sure that everything went well.

 

1344K with AVX=0 is good for vcore stability testing. If you can pass this and your temps are reasonable and you get no WHEA correctable errors in event viewer, you are doing ok.
1344K with AVX=1 (CPUSupportsAVX=1 but CPUSupportsFMA3=0) is good for an AVX stress test and won't blow up your CPU like small FFT, but you may still need LM or a very good repaste to keep the temps down.

 

Anyone explain to me what this means?



So, we can put all the cores to 41? Or this is a simple bug on TS?

 

No. The setting will do nothing, it will not apply. The guy is just living in a fairytale land. If you look at current clocks at any time in the video you will see it's 6x 3.9GHz and NOT 4.1 (which he thinks he is getting).

 

What was i thinking but the fact is that if you go in options in Bios to select the multiplier, core 5 and core 6 allow you to change the values.

 

He’s increasing the Turbo Boost Window so that the cores can remain boosted longer. It really is a function of cooling capacity. With his GT63, the cores can remain boosted longer before dropping speed. Look also at his package power. He is running closer to 45 w TDP with the optimization.

 

Yeah I see the power draw now too. Also he is throttling at some points.... No good haha. The gt75 has none of that. Nice and steady 90W power draw indefinitely here with no throttling at all until VR current limit is reached - only happens in prime95 (can be adjusted in bios but I haven't done it and might never do since nothing else makes it throttle and 3.9 vs 3.7 is like no difference).

 

So he's using my IMON tweaks without giving me credit for my hard work?

Ohkay....got it.
Ok give @Vistar Shook credit for even telling me you could change IMON SLOPE first....

 

And if you do a reset and check again the value on cores, you will check that all are at 41x...all this in Bios, so is a bug in Bios?

 

The Bios settings won't alter the highest possible multipliers for a locked CPU like the 8750.

Enviado de meu Pixel 2 usando o Tapatalk

 

Will take a pic to prove that after a reset(restart*) the values dont change from 41x.

 

Can you run prime95 to have 100% load on all cores?
Those settings in the BIOS won't change the fact that the CPU is locked and 3.9GHz is the limit for 6 cores.

Enviado de meu Pixel 2 usando o Tapatalk

 

That's a bug. Or rather a "feature."
The GT75 Titan shares multiple SKU's within the same bios and motherboard.
It has to allow for a fully unlocked 8950HK CPU. Setting the CPU core multiplier in Overclocking Performance Menu or in the "OC" section sets all the cores to that value, even if the CPU isn't a K chip.
But the CPU ignores the 6 core ratio override and is limited by its internal setting

 

Let me try explain in another words…In that section i can,

Core1- Not allow me to put more than 41x
Core2- Not allow me to put more than 41x
Core3- Not allow me to put more than 40x
Core4- Not allow me to put more than 40x
Core5- Allow me to put any value that i want till 84, but i left the value 41
Core6- Allow me to put any value that i want til 84, but i left the value 41

If i restart and go again to the bios, i checked that all the values are in 41x even core 3/4...its that im talking about...in core 5/6 why not have the lock in 39x?

Hope that not you can understand what i mean.

 

Test it and see if it actually works.

Enviado de meu Pixel 2 usando o Tapatalk

 

Not work, im able to do 40x but only if disable 2 cores.

 

Another thing, if i left that values at 41x as the previous pic, in fact the undervolt gone but only in IA offset...my undervolt is set in Bios and if restart again and check the offset still the same.

 

The more of these other laptops I see, the more disappointed I am with laptop performance in general. It's sad. The gt75 seems like the only decent bga laptop out there atm all things considered (temps as well as performance, features and availability).
Yet building a pc will imo be much more satisfying (which I hopefully can do in like 2 or 3 years). I mean, no wonder the 8750H actually still runs pretty toasty in the gt75 just as it does in the thin laptops. One has to keep in mind that it runs at stable clocks with up to double the power draw that other laptops, including other msi ones. And I believe it can even be lower tdp in some laptops?
I don't think I would be happy with my cpu uncontrollably throttling whenever I do something demanding.

 

Temps after repaste with LM:
I find it strange that my temps didn't improve but my package power went up significantly. I ran the stress test in AIDA (Stress FPU and GPU) and my temps barely brushed 70C. I may repaste again later on but I will give it a few days before I decide.

I also cut down an Enzotech VRM heatsink and put it on my chipset:

I ran Atto a few times back to back and my PCH maxed out at 61C so that seems like a great success.

 

good day, I have some trouble updating windows to 1803, I'm not sure if others have encountered the same issue, installation failed something like that. Tried several times but the last win 10 update was 1607. Please advice.

 

Yo so I just got my MSI GT75VR with 32 gigs of ram and the gtx1080 and to be honest I’m kinda disappointed
I really like the mechanical keyboard and the display but that’s it
It sometimes just kinda lags without any reason like there is the spinning loading circle over the mouse icon without me doing anything
I checked in task manager and the only kinda „heavy“ processes running in the background are Cortana and the pre-installed norton antivirus
Sometimes when I launch dragon center it shows that the ram is used 25% and again that’s without an running application

I also played a GameCube game which I tried to upscale to 4K which also was laggy as hell. It struggled with keeping 50 FPS and sometimes had some seconds where the frame rate fell below 40 FPS
Shouldn’t this laptop be capable of running dolphin (the GameCube emulator) without any problems at 4K?
Even my old desktop was able to run games upscaled to like 2k (I know 4K is more demanding, but still) and that desktop has a very old cpu. The gpu had maybe like 1gb vram so it’s not even worth mentioning. The only good thing about that desktop was the 16 gb ram...
But in terms of hardware the Msi notebook is better in every way so how can it struggle like that? I also updated to the latest graphic cards driver.

 

You already answered your own question.
Northon antivirus.
Cortana
Dragon Center.

 

That raises an interesting question. Can we do without Dragon Center and still modify our fan curves? Aside from loving to revert from my custom curve to Auto, if it is that resource intensive I could see trying to do without it.

 

Yes. MSI Silent Option, Skylake version.

 

Actually I have no issues with dragon center I still don't get how people get so many (may be the different version in gt75vr). And who would keep norton etc? The first thing I do with new laptop: 1. make a backup of original system (e.g. burnrecovery). 2. uninstall everything I know what it is and I never wanna use it. 3. disable cortana and superfetch. 4. check if restore points are enabled. 5. make one. 6. go a bit deeper into powershell etc and remove every windows 10 app I don't wanna use - or use ccleaner to remove them, often that works (i.e. message app - totally pointless on a pc or laptop not like you'd have a sim card in it, as well as anything that relates to calling, finances, maps, weird games, get help, paint 3d, onedrive,.... a huge list).
7. go to settings and make sure cortana is not allowed to touch anything even if it's already disabled, also deny all access to other stuff I don't use (e.g. location). And deny background activity for apps (with exception for mail app).
Once I am remotely happy: 8. make a full disc image of the C drive (to be repeated every few weeks).
9. Keep on tuning as I go and discover more useful stuff (e.g. ooshut up10).

 

Dragon center is what is making your CPU throttle when you run prime95.
Even after you set VR_CURRENT_LIMIT to 800 in your Bios (ICCMAX).
Dragon Center enables "TDC" and sets it to 640, which greatly throttles your CPU.
Dragon Center on the GT73VR and GT75VR never did this. This is a new "feature" of the "Gt75" and other 6 cores Dragon Center now.
And normal users who dont know how to unlock their bios would never ever know this, since that setting is hidden (in CPU VR Settings->Core I/A Domain).

That's why you need to uninstall Dragon Center, use MSI Silent Option, go back into your Bios and disable TDC and set TDC limit to 0, and set VR Current Limit back to 800.
Then you won't throttle anymore (Just do the IMON SLOPE And (-) IMON OFFSET tweaks)