Warning: Some i7-6820HKs and i7-6700HQ have Uneven Core Temps due to Uneven Heatsink

Well, i used arctic silver 5 and still nothing close to -20C...

https://pp.vk.me/c636820/v636820184/52e91/lU08fGBIRd0.jpg

 

These values are from maximum heat in prime. Small data bench in OCCT is much cooler.

 

I had problem with 2 of my laptops asus rog 751JL cpu 4720HQ and msi gs43vr cpu 6700HQ uneven core temperatures on both, diferential of 10c between cores.
The problem is not in the CPU
The problem is in the heatsink tensioners ,they dont make much pessure to press heatsink against the cpu and gpu
Simple repaste didnt help,
Then I bent heatsink tensioners (ALL OF THEM) that way they make more pressure on the cpu and gpu, its simple as you can bend it by hand.
Then I repaste with mx-4 and test with prime 95, now I have temps not more than 3c difference on all cores on 100% cpu usage.and on idle not more than 1c difference on both laptops.

 

dpost

 

I overclocked my 6820hk to 4.1ghz and while playing CS GO, my laptop froze (mac temp 98C when froze). I used stock clocks to run OCCT for short period and the temp difference between hottest core and coolest core is more than 5 degrees ( max temp around 79 C). I have 1 core which has always highest temp and 1 core which has always lowest temp.

So my question is how do you calculate the temp differential. Is it between any 2 cores with extreme temps or in any order?

And do Dell fix the lightbleed problem? I have lightbleed on the bottom of the screen

 

Do not use AS5, it's an outdated paste and is conductive!

I would also refrain from using Prime95 as it pulls too much power through the CPU.

MX-4 will not last you long, soon it will dry out and make your temp 100+ on load.

4.1GHz on CSGO indicates that you have a thermal pad problem.

Remove the thermal pad on top of the CPU chokes (small gray metal squares). And do a repaste with a decent compound like kryonaut or gelid extreme.

You can also send the laptop to Team LHz for repaste!

 

Hi there,

my laptop's heatsink will be replaced by Dell in the next few days and I would like to get the thermal compound replaced as well.
However, after reading about Kryonaut, I have found some posts stating that it will actually suffer from pump-out if the heatsink is not perfectly even.
Taking into account that this laptop is a PITA to disassemble, I would like to have some thermal compound applied that won't suffer from drying up or pump-out.

Therefore: is IC Diamond 7 still the way to go or has some compound taken the crown? (assuming an uneven heatsink!)

 

All types thermal paste will suffer from pump-out if the heatsink is not perfectly even. But ICD is probably the best if the heatsink is a mess.

 

How does Grizzly Kyronaut perform? How does it compare to LM?

Hey guys,

So I decided to repaste my stock 17R4 (#3 unit) with Grizzly Kyronaut to see what it can do and the results will surprise you. My main goal was to collect data on the temps over extreme usage. (OC, Benches, Extensive Gaming etc...)

First of all, this unit was one of the early batches so the heat sink was just a nightmare. It didn't suffer from the horrific 20C+ temp differential even when it was stock, but still, as you can see the temps are terrible, but wait, according to dell (anyone have that link to that Dell page?) 100C is within reason. *Barf* Seriously right?

Secondly, it did take some work to get it right, although it was okay after reassembling it again the first time, by my OCD wanted it as perfect as possible without having to head to the shop like I usually do to balance the heat sink, so this was all done just on my desk at home.

I've just finished up so I'll post a lot more data later, but for now, here are some screenies as an appetizer.

Interesting note, but not surprising:

+ The GPU actually runs cooler (so far) than LM by about 3C-4C. Again, so far... - My GPU on my LM'ed 17R4 after heavy gaming peaks at 57C.

+ I did a little PCH mod and the temps have dropped ~8C as well. (I've used a 1.5mm copper shim with fujipoly 11.0's to hold it in place and with a little tweaking the under black cover sits perfectly on top of it to hold it in place. It's nice and snug and it won't go anywhere.)

+ The CPU temps seem to be very close to LM...Before I make any official statement let me run some more tests and I'll report back.

_________________________________

BEFORE: After Playing Overwatch


AFTER: Playing Overwatch


AFTER: Fire Strike Stress Test


wPrime: First Run right after reassembly.


CUSTOM PCH MOD: So far it's dropped the temps ~8-10C. It's still early so I'll more a more concrete temp data shortly...


Disclaimer: You may be thinking...with these temps using traditional paste, we could be onto something here eh? Well, it's going to take a lot more than just repasting. The whole process has to be treated like you're doing LM + HS mod / fix + etc...

 

@iunlock

Bro, does the uneven heat sinks only applies to Alienware laptops? Sorry if I ask because I have an intel i7-6820HK in my GT80.

 

The truth is, every laptop suffers from it, but some more than others.

AW's really hit the spot light, because we (yes we as a community) found the culprit of a design flaw, way before Dell even did. - The good thing is that Dell recognized our findings (credit to us all) and acted on it right away to correct the issue and the newer units rolling out have been pretty good.

Have you tried running OCCT or wPrime and monitoring your temps via hwinfo64?

 

Thanks bro, I'm fairly new when it comes to this...what software should I use to detect uneven core temps and how do I read if its uneven core temps?

 

Download HWINFO64 (I tend to favor the portable version) and pay attention to the Core temps, when running OCCT and wPrime. I like v1.55, but you could use the latest one too..

Take a screen shot and post them here so we can see how your system is doing...

 

Thanks bro, I'mma going to do it now....stand by.

 

Fixed and pretty good? One week and we are finished with February. Azor said models pushed out from 7 Dec was fixed!!

 

btw bro do i need to run occt for hours?

 

To be fair, for the sake of there being fixed units rolling out, have you seen the latest models to have first hand knowledge of the fixes?

I have... so has @Mobius 1 ...

They are a lot better with both the core differentials and under regular use (stock) it'll get by just fine.

 

At least for 1 Hour. Take a screen shot at 15mins, 30mins, 45mins and/or just at 1 Hour.

 

I see. I guess I'll just do this later today, thought it will be like 10 minutes like XTU stress test.

 

You could just let it run as it doesn't have to be exactly an hour. The more = better... I've ran mine over night for almost 12 Hours and @Mobius 1 has a 24 Hour run....

The most important thing is to not screen shot it too early like at 10mins for example as that doesn't say much at all. A lot of members have done this and raved about the temps, while being power limited and without giving it enough time for OCCT to run....

 

I might also add that I undervolted my CPU -0.175V so do I need to restore it to stock before running OCCT?

 

That's fine. No need to run it at stock. Stock CPU runs overly rich and is not a good indicator of the true capabilities of what your system can do. Running it at the best settings where you get the best MPG is key as it displays the systems potential, accurately.

 

Done bro.

http://imgur.com/a/4hvC2

GPU temp didn't stay below 60C.

Stock paste.

 

wPRIME v1.5 Not all find the older version. It's removed from wprime.net

 

I recently had another technician change my fan assembly and have received a somewhat newer revision (maybe the latest one?).
The packaging of this assembly was labeled as 2017-02-23 (afaik, might have been two days before / after that, but you get the idea).

Unfortunately, Dell has switched back to its stamp (or maybe they never shipped replacement assemblies with thermal paste?).
In order to further this topic, I'd like to add my somehwat shaky / blurry pictures of this revision.
@iunlock: I have added my picture on top of yours, to explain the change - please contact me if I should take it down. (I have left your watermark intact)

Dell has completely removed the old, thick thermal pads on the upper part of the assembly and replaced them with thermal tape(?).


Besides that nothing obvious has changed:

 

I bought a "listed as new" off the outlet, it has a 6820HK in it, I fired it up and ran CPU stress test and donut of death and could not get the GPU past 70 and the cpu hangs around 76c to 81c max under max load.

Figured not to bad for a stock system.

Also, in my view it's only logical that dell would go back to a stamp, to many techs that could screw something up. What would matter a little more is if they improved the quality of the stuff the stamp is made off. stock paste is still stock paste. Anytime I buy a high end laptop I always plan on prob having to repaste anyways, especially when i want to know its done right.

 

Has anyone had an issues with the 7820HK Kaby Lake CPUs?

Just wondering, is there any vendor that is most likely to get these problems?

 

BGA is junk... You buy it now and it might work fine.. But when it breaks 2 years down the road and you don't have warranty, you have a brick.. Get a LGA laptop!

 

A non BGA board can break just as easy, CPU's that are secured currently to the board and use the right type of solder wont fail unless the chip it self goes bad. So why yes if the chip goes out it's a new motherboard, that does not make them anymore less reliable then the ones with the socket. You have to change a part out regardless.

I have a old Alienware 14 that is BGA and 3 years old kickin around here that my kids use. Thing still runs like a top. Why my M17x R4 that is socketed corked off and I have to replace the MB in it.

 

Difference being replacing 1 part vs paying for a MB / GPU / CPU because they're all welded together.
Other than that Intel offload their worst binned trash onto BGA and market it as unadulterated performance which is total BS.

Just for the record I believe the Alienware 14 is a socketed CPU and BGA GPU. God didn't bless twice here

 

Not the processor

 

But BGA is still BGA right ? On the BGA subject I personally always get the extend warranty with Dell especially how expensive these puppys are and now with them being BGA even more so now.

I can also agree if one goes out it's a M/B replacement, I was just stating I have had more motherboards go out on me then the BGA chips in the laptop. Dont get me wrong, I don't like BGA anymore then you guys do but it is what it is and its better then it used to be back in the HP disaster with it in the DV model days.

On a bright note the silicon gods were good to me, after a repaste of the laptop she is holding a nice O/C and holding under 70C across the board. Ill take it.

 

myth...

...or is 'Fake News' the current vernacular.

I don't win lotteries, when a bird ****s somewhere in the World it hits me, and the one time I speed in my car I get the ticket...every single time; my current R4 has the QHD with zero banding problems / bleed, better quality, clarity, brightness, etc. across the board than any TN I have ever seen in my life let alone better than the several hundred 1080p IPS by Dell and others that I have worked with, AND on this same unit I have the 6820HK BGA that I have literally beaten the hell out of via every stress test in existence and it runs like an armoured thoroughbred at temps mimicking a spring day in southern California...not to mention having a 2010 XPS-15 L501x that runs just as well as the day I bought it.

I may be overdue for an absolute nightmare in my next BGA purchase, but in the meantime, no way I could be that lucky as noted in the aforementioned. I am convinced that it only takes a few reported nightmares to blow-up a myth that ultimately becomes one heck of a grand urban legend.

 

It's fact not a myth. Which ever way you present it, If 1 piece of hardware goes pop you'll be throwing the baby out with the bathwater and replacing every expensive component since they're all soldered together.
As to how common it happens, only planned obsolescence knows, but I truly hope you never find out outside your warranty period.

 

Myth...

...you're just loud, delusional, and must read things a minimum of twice to comprehend.

 

Mmhmm, nice bait mate.

 

thatta boy...

 

I've seen so many Clevo P650 owners literally cry when their laptops die after 1 year... Sager were charging 800-1200 to fix the laptop which is as much as paying for a new one!

 

The meaning with soldered hardware... As stated. Planned obsolescence. Very well said @TBoneSan
Soldered hardware = Max extended expensive warranty. You will be milked whatsoever you do. Either pay for new spare parts and repair or use same money on warranty!!

 

That's it, it's been stated behind closed doors that the big push for un-upgradable filth is so they can milk the consumer. It doesn't take a genius to work it out either. Yet insucure people prefer to sulk and see it as a pissing contest.

 

See one of the latest posts in BGA VS. PGA THREAD

 

Insecure huh...LOL; yeah, I really envy you and that rattling 2009 PGA upgraded with your 7700k that sounds like weed whacker you got lugging around with you. Why don't you now write your sermon about that sweet circa-year-Obama's first-term 1080p screen you have with it and all the chicks you pick up with your 412 fps and how nicely you heat your cans of soup on that back of that thing. The bottom line is for every arm-waving believer like yourself that BGA is failed before it even hits the marketplace has several million happy customers with more interesting lives and already looking forward to their next machine after the 3/4-year average ALL of these things end up obsolete anyway...

...PS: I have a lowered, 2009 Nissan Sentra with really loud headers I'd like to sell ya if you're interested; the thing will EASILY carry a Corvette turbo V-8.

 

Cheer bro, yeah i did have a good read through there. There's a lot of good information there for all...

Simmer down salty boy. But cool story anyway.. again.. nice b8....3 out of 8

 

...and so it concludes the same way once again, every single time; outgassing a bunch of manic frustration, yet thin in any validity, nor any semblance of basis whatsoever...

...NEXT.

 

Guys,

This are my core temps after updated bios (latest from the dell site)

*Using OCCT

core 0 - 89
core 1 - 78
core 2 - 90
core 3 - 74

8 min test

cpu did not go over 3392 MHz

*Using Aida64

core 0 - 97
core 1 - 87
core 2 - 98
core 3 - 85

2 min test

cpu did not go over 3392 MHz
also Aida64 says my cpu is Throttling

Do i have a problematic CPU?
Should i ask for an exchange or ask for a tech to replace cpu/motherboard/heatsink?

This is a gift for my brother who lives over seas, i have 20 days.
What should i do??

thanks for the support.

 

Probably just poor heat sink contact and lousy factory thermal paste. Please post your system model information and CPU/specs. That way others that have the same product that you do can chime in with possible recommendations or steps they have taken to correct it. No point in sending it back for an exchange because what you get will likely be the same or worse. All new notebooks typically have horrible temperatures now unless you buy them from a boutique like HIDevolution or Obsidian-PC.

 

ok
Alienware 15 R3 i7 7700hq 16 256 ssd 1060 6gb

So should i ask a tech support to come to my house and change de heat sink?

 

Have the warranty transfer to you and you can claim service.

Usually with new unit, better ask for a heatsink replacement. And buy a tube of good thermal paste like Gelid or Kryonaut, have the tech replace it for you.

Disassembling this laptop is not that hard if you want to try. It will not void warranty, we have proof of this being stated by the Alienware representative.

There's zero reasons to buy from anyone other than Dell/Dell outlet when it comes to Dell machines, period.

 

Where do you live again?

And where does your brother live.