P751TM1-G 8700k can't boost past 3,8ghz

Morning folks, it's me again.

My laptop is back from Eurocom and the tech did an amazing job(really), setting the ram correctly, giving me the 2x8 stick of ram I ordered, ended up switching one of the 8gb stick for a 16gb one so now I have a total of 24gb.

He was also able to undervolt the cpu, something throttlestop refused to do.

The only remaining problem is the fact that the CPU cannot get past 3,8ghz under load.

Here are some pictures of the CPU underload; https://imgur.com/a/1aJp22U

I already tried on reddit and some people told me to enable MDC mode, however, I can't seems to find it in the bios.


https://imgur.com/a/kRyHCqS picture 2 and 3 are when I am inside the *view/configure turbo options*

 

Use HWINFO 64 to determine what the throttlingcause is.

 

Alright, after a teamviewer session with @Danishblunt he said that XTU randomly change value, that it's not caused by any power/temps throttling and he also think that it's an EC issue.

So @Prema , can you enlight me?

 

Basicially whats happening here is that the EC or BIOS randomly changes the values to some static value, which is weird. Even when playing with throttlestop or XTU it seems it would simply change the values back to some default value and refuses to change it. Another interesting thing is there is no throttling, No thermal, No Current, no Power etc. It looks like it has some locked values it refuses to go past.

However it would work underclocked.

Maybe some of you know whats going on here:
@Mr. Fox @Papusan @ yrekabakery @Meaker@Sager @XMG

 

I should add that another user here was able to overclock his Eurocom Sky X4C.

The only difference between me and him is that I have the unlocked bios that come with a delid from Eurocom and he has the regular bios.

 

PremaMod has EC throttle removed, but you need to ask Eurocon as I have nothing to do with the firmware they are using...

 

How should I word that to them?

I mean, if I tell them *Hey, there's EC throttle, what do I need to do* will they understand?

 

Just tell them that their 'unlocked BIOS' doesn't work properly, they will probably already know as many user here where reporting problems with it.

 

Thank you!

 

@Eurocom Support

 

double post

 

@Danishblunt it's weird that I didn't receive a notification of you tagging me in this thread.

That's me, right?

Yeah I have the stock BIOS, 1.05.10RPR dated 2/28/2018 and EC 1.05.02.

On my 8600K I can run 47x all cores using 1.175V static (override) voltage without throttling except in 6 thread Prime95.

Here's after 1 hour of CPU-Z stress test at 4.7 GHz:



Here is combined CPU+GPU load of Prime95 (3 threads) and Unigine Heaven:

So you had the tech switch you from 1x16GB to 1x8GB+1x16GB?

Well that's a nice capacity upgrade, but did you lose dual channel in the process, and can you run at XMP-3000 now?

Plus the 8GB is single rank while the 16GB stick is dual rank, not sure how well that works either.

I can adjust multipliers and voltage in ThrottleStop just fine. However currently I'm setting my 47x all cores and 1.175V in BIOS. But there's no difference either way for me.

 

The only throttling I've observed so far is in 6 thread Prime95. At 4.7 GHz and 1.175V (override), 6 thread Prime95 (AVX off) pulls >130W, which drops me to 4.5-4.6 GHz due to VR Current Limit. It seems there is a limit at 108A that cannot be adjusted, since increasing VR Custom Setting in BIOS does not help, and ThrottleStop does not read the register correctly (it always shows 164A).

Is this the EC throttle you're talking about?

 

Half the 16gb stick will stripe with the 8gb stick for 16gb of dual channel and 8gb of single.

 

I found the perfect stability test



Using these settings in Prime95 (on all threads, so 6 for me) with AVX disabled, 4.7GHz at 1.175V stays locked at 130W package power consumption and barely tickles the edge of the VR Current Limit.

Small FFTs is too much and throttles, large FFTs and blend aren't intensive enough.

 

Yeah, I was talking about you, had forgot your username so sorry about that.

Memory is stable at 3000mhz with the correct timing

On the spec sheet it says that he swapped the 1x16gb stick for 2x8gb like I had ordered but he must have forgot the 16gb stick I guess.

It also says that the CPU test "came back fine" when in the email I had sent him it was one of the listed issues.

Do you happen to have your bios on hand by any chances?

I remember your post saying that you were going to delid at home so you have the non-unlocked bios.

I sent an email to the guy that helped me friday, telling him he had forgot a 16gb stick and that the cpu was stuck at a max speed of 3.8ghz. Still waiting on a reply so far.

I just hope it's simple as flashing the bios, I don't want to send the laptop again.

 

I mean if you have 2x8GB and it's running stable at 3000C16 then I wouldn't mess with it, don't fix what ain't broke right? With 1x8GB + 1x16GB you're running in that weird asymmetric single/channel mode as Meaker mentioned, as well as with mismatched ranks, and who knows if 3000MHz would still be stable. Unless you really need that extra capacity, idk your call.

I don't have a copy of my BIOS on hand at the moment, no. Actually not familiar with what tools are used to dump and flash BIOSes these days with the new stuff, plus idk if they still embed the Windows key in the BIOS and if you would lose your OEM license if you flashed my BIOS since I bought without an OS. I would talk directly to Eurocom about the BIOS issue and they can either remote flash it for you or send you the files and instructions to perform it yourself, you shouldn't have to send it in again.

Yeah I'm in the process of delidding atm. It actually came delidded with liquid metal from the factory but they did a poor job of it. Didn't scrape off the stock Intel silicone, used way too much liquid metal that it spilled all over the PCB, didn't spread it so coverage was poor, and used super glue to seal it back up. The super glue on the PCB is a problem right now that I'm trying to figure out. So if they did your delid as sloppily as they did mine, there's still thermal improvement to be realized with a proper delid, plus I have to put on my Rockit copper IHS.

 

Memory is super stable, I don't need the extra capacity, it's a weird/funny mistake.

I am not confident enough to do a delid myself if I can be totally honest but I am sure that there's obviously improvement available when I see the QC that goes there and it's a shame because I really thought that paying extra dollars/top money for all those littles extra (delid, screen calibrations etc) that I would get a perfect machine but here we are.

 

I don't think there's such thing as perfect, but if you want something closer to that, HID would probably be the best bet. Obviously you pay a lot more there for the same config as you would at Eurocom. Me personally, since I feel comfortable working on my own computer, I would rather get a better hardware config within my budget and do the work myself.

On a side note, I also discovered a design flaw with this model's speakers so I made a cool little mod to fix that. I'll make a thread about it when I have time, and I'll also email the details to Eurocom so they can hopefully incorporate it into their build process. It's actually a really easy mod to do, just requires the right material and a fair bit of disassembly.

 

acetone (nail polish remover) breaks down superglue.

 

Trust me, it worked on the IHS but it's not doing squat to the super glue on the PCB. I'm going a different more aggressive route (carefully) so fingers crossed.

 

Does it involve a razor blade shaving it down to the PCB? Lol! that's what I did after my failed attempt of using superglue. It worked, just be careful not to cut to deep.

 

LOL NOPE. Very careful sanding with super fine (1000 grit and 2000 grit) sandpaper to get the super glue off.

 

That sounds like a much safer method to me lol.

 

Just coming here to update people; yesterday while playing some Far Cry 5, I noticed that my laptop was boosting at 4.4 on all core.

I had previously played in the bios, HOWEVER, Nothing was working, now, after not touching the laptop for 2 days because I was out of town it somehow went back to normal? I am a bit lost.

Tried some benchmark and the laptop was boosting, with not so bad temps (10 mins XTU without breaking 80s)

I have a -125mv undervolt in throttlestop but I have a feeling that it's not really applied/working.

 

Are you using static/override or adaptive voltage mode?

 

I tried both on his notebook, didnt change anything.

Strange really.

 

The unlocked BIOS he has is screwed up. The stock BIOS (what I have) is better.

 

He didn't do anything to it, he didn't reflash, he didn't play with settings, it just started working out of the blue. I mean wat are we supposed to take from that?

 

Shrugs

Anyway OP should be getting the stock BIOS soon. Even though it's boosting now, he's still having voltage issues that I don't have.

 

Well no, the voltage does actually work as intended, however it locks to a certain powerlimt. I had no issues playing with the voltages at all on his notebook, but it would downright refuse to accept any value higher than 118W and even set it to something.

I agree tho, stock BIOS + EC is recommended here, hopefully Eurocom will send him soemthing useful. I wouldn't want to rely on something unlocked that acts weird either.

 

There's a VR Current Limit throttle at 108A, which limits the CPU to a max package power of 130-140W from what I've tested. Probably EC-based because it's not affected by the current setting in BIOS. Prime95 throttles at above 4.7GHz due to that, but less demanding workloads can run at higher clocks without throttling.

 

No thats the odd part, it simply limits the power limit INSTANTLY. If you change to 120Watts it literally takes 1 second for the system to revert it back to 118W. Ive never seen a behaivior like this before.

 

Update; I am now able to overclock/play with voltage.

I setted PL1 and PL2 at 150000 in bios and am overclocking using throttlestop.

4.5ghz with static voltage of 1.1191 and a -25mv offset undervolt.

The 1080 can also clock at 1880mhz with 0.9v which is great, thanks @yrekabakery for the voltage curve tips.

Thanks for your help folks, I will really need to get the regular bios tho.

EDIT; With those settings, the cpu barely touch the high 70s and the GPU usually stay at 80 I guess I could try to push for 4.6 but I think those settings right now are a pretty good balance of power/low temps etc.

 

Still good temps. Nice work. It looks like the under-volt is pretty low. I have seen some users report -50mv.

 

Keep

That's true, but keep in mind my cpu is already under 1.2vcore with an undervolt.

I'll try to fiddle with it some more tonight, my next step is improving my firestrike score (18k) it seems pretty low to me.