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4 Posts

05-18-2015

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Y50-70 Touch GPU Heat Problems

2015-05-18, 20:27 PM

I just bought a brand new Y50-70 Touch 4K Laptop about 2 weeks ago.  So far things have been fine with only minor annoyances such as the apps or browser windows locking up for 30 seconds or so every couple of hours. However while playing a game that is now 3 years old I noticed the GPU fan running loud constantly depsite me turning the graphics settings down VERY low. On a whim I decided to check the GPU temperature. I ran MSI Afterburner with a few games and GPU testing programs I'm noticing that the GPU gets up to 94C before it throttles down and jumps down to ~85C and then it slowly starts heating back up and usually sits ~92C.  By the way I am not trying to run these games at 4K or anything. I usually run them at 1080p or sometimes 720p with the same results.

 

The graphics card is an NVIDIA GTX 860M with 2GB which should be able to run these apps even on Medium and not over heat. I even underclocked the GPU with Afterburned and am getting the same problem. Has anyone else had this problem? The GPU's idle temp is 46C and there seems to be no problem with the CPU temps which sit around 75C on full usage.

 

Obviously these temperatures are too high to be safe but just wanted to know if anyone else has had this problem before I contact Lenovo.

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15 Posts

06-30-2015

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Re: Y50-70 Touch GPU Heat Problems

2015-08-25, 21:44 PM

I'm having a similar issue on a Y50-70 Touch 1080p.  Also 860M and pushing 90c.  And actually hit 100c on the CPU.

 

Did you ever find any resolution?

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4 Posts

05-18-2015

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Re: Y50-70 Touch GPU Heat Problems

2015-08-25, 21:50 PM

I repasted it with arctic silver thermal paste. I see in another post you said you might attempt to do that. It was not that hard and took only about 20 mins. I've repasted Desktop CPUs and GPUs before but this was my first laptop. It brought it down by about 2-5C. From what I've read around it's hit or miss on these machines if you get a good one that maxes out around 80-85C. I might try repasting again but I'm honestly too lazy to send it in for "repairs" as it works fine as long as I'm not gaming and the trip I bought it for to game with is over and now I just play games at home. 

 

Let me know if you have any luck repasting. 

 

 

 

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Re: Y50-70 Touch GPU Heat Problems

2015-08-25, 22:08 PM

Sounds like you're the perfect man for me to talk to. =)

 

Is it one connected heatpipe system for the CPU, GPU, ect. Or seperate units?  Did you do just the GPU, or everything?

 

Is it all screw/pressure mounted so I only need thermal grease?

http://www.newegg.com/Product/Product.aspx?Item=9SIA0AJ33T2869

 

Or does any of it need a thermal adhesive?

http://www.newegg.com/Product/Product.aspx?Item=N82E16835100005

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Re: Y50-70 Touch GPU Heat Problems

2015-08-25, 22:12 PM

It's connected to one heat pipe. The GPU and CPU are very close togetether and there is a mounting plate that screws onto it so you only need the grease and do not need adhesive. It is also numbered with like 8 screws in the order in which you should unscrew and rescrew to provide a good even application when you are locking down the heat plate to it. 

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Re: Y50-70 Touch GPU Heat Problems

2015-08-29, 5:23 AM

Huge success.  Took off 30c+.  No joke.

 

There is black tape around the heatsink and it was bulging up at the edges, preventing a flat seal the to cpu/gpu heatspreaders.  And even if there was a thermal connection, it would have to be through way too much thermal paste.  I sanded it down so it would be flush, and lapped both heatsinks with progressively finer grains.  Cleaned well with Artic Clean, and rubbing alcohol and put on AS5.  I used the spread method after looking at the heat spreaders and deciding that vertical line was for desktop i7s.

 

It's hard to pinpoint the gain exactly because the cpu was protecting itself as it was hitting 100c, so no telling how hot it could have gotten.  But, what I did do prior to replacing the thermal paste was underclock the max cpu hz from 3.6 w/ turbo, to 2.1hz.  By setting it to 80% under windows power settings, and also cranked my graphics in my game down from 'medium' to 'fast'.  Even at 80% CPU and fast graphics my temps were 89c and 79c respectively.  Post-lapping , this setup went down to 62c and 60c.  27 degrees improvement.

 

On turning the CPU back up to 100% w/turbo and the graphics up to high, I'm maxing out both the CPU and GPU at 74c under heavy load.  Cooler than I was running at 80% cpu w/ fast graphics.  Easily 30-40c+ difference as I didn't even dare to try high graphics when I was hitting 100c.

 

Artic Silver 5 is good, but not that good.  This was a quality issue.  Worst part is this is a new 'refurbished' laptop, that was immediately sent back in for service when I got it.  And after being refurbished, and repaired (replaced mobo), they still didn't address the underlying issue that likely caused the original return, and my repair.

 

In any case, after this operation, replacing the hdd with a Samsung 850 Pro, and the memory with 16gb g.skill, I'm quite happy now. =)

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6 Posts

07-03-2015

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Re: Y50-70 Touch GPU Heat Problems

2015-08-30, 22:50 PM

Hi

 

I am having the similar issue, my Y50-70 cpu temp goes to 100C while playing a 15 year old game and gpu hitting 90C I am wondering did you put thermal paste on gpu as well or just CPU and remove the type. i am plan to do it similar. 

 

Thanks

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Re: Y50-70 Touch GPU Heat Problems

2015-09-02, 2:16 AM

The Artic Silver 5 goes on both the CPU and the GPU.  And as he mentioned, there is one heatpipe assembly that covers both.  I didn't remove the tape, as it's likely there to protect components from touching the metal assembly.  I just sanded it down so the copper heatsink squares would be flush with the cpu/gpu heatspreaders.

 

Of note, there are several sticky pads on the assembly that appear to be protecting other chips from heat/conductivity.  I suggest you remove these prior to doing the lapping (sanding), as they get in the way and will get dirty from the copper/tape dust.  Just take careful note of which ones are where, and which chips they protect, and be sure to replace them before you put the assembly back on.

 

Look up the "spread method" for applying the AS5 to the CPU and GPU.

 

As for lapping the heatsinks on the heatpipe assembly, I used 400, 600, 800, 1200, 1500, 2000 grain sandpapers, progressively using finer grains.  Research "heatsink lapping" for details.

 

And carefully clean the copper heatsinks on the assembly after the lapping.  The slighting contaminent, dust, or even a fingerprint will affect your temperatures.  Use Rubbing alcohol, and coffee filters (lint-free). 

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6 Posts

07-03-2015

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Re: Y50-70 Touch GPU Heat Problems

2015-09-02, 14:59 PM

thanks that is great advice. 

 

I will order the AC5 and try do it soon.

 

Thanks

 

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11 Posts

07-03-2017

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Re: Y50-70 Touch GPU Heat Problems

2017-07-03, 17:59 PM

did u end up repasting since then ? what other mods/fixes have u done since ? 

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