Questions about Temps for ALL Lenovo Y510p Users!!

I have a Lenovo Y510p with 2x GT 755m cards in SLI.

When playing games like WoW the MAX GPU temps on Card 1 reach 90°C. On Card 2 (Ultrabay) 85°C.

At this point the game starts to stop responding. The screen will go black for about 1 second and
the laptop's fans will slow down for just a moment before the game resumes and the fans go back up.
This will happen pretty much any time the temps hit 90°C again.

• I have a Notepal U3 laptop cooler with 1 fan on each GPU intake slot and 1 on the center of the laptop.
• I have also repasted the CPU & BOTH GPUs with Arctic Cooling Silver 5.
• I have modded the bottom case of my laptop to allow more air into the laptop.
• The BIOS is also modified (so are the GPU BIOSes)

To stop the crashing I tried upping the voltage on both cards by 012.5mV - 025.0mV. This didn't
work at all. Games always seem to stop responding when temps get to 90°C. However my laptop
shouldn't even techinically be getting this hot in the first place. I'd rather max temps to sit
around 80C.

This laptop has always run pretty hot and I've always felt like I got a lemon as others have
explained to me that their laptops don't get anywhere near as hot as this.

As such I have some questions for other Y510p users:

1. What are your MAX temps whilst doing some extensive gaming?
2. Have you repasted your CPU & GPU?
3. Have you modded your Y510p fan intakes to allow for more air?
4. Do you use a cooler?
5. Do any of the games you try and play ever stop responding?

Also if anyone has any tips or anything, I am all ears. However at this point I don't expect this
piece of crap to really do any better as I feel I have already done everything I can do make it run
as good as it can.

Thanks.

 

Undervolt. Thats the only way to lower temps significantly. Mention your clocks and voltage.

 

Core Clocks on both 755m cards are: 1098MHz
Memory Clocks on both 755m cards are: 2700MHz

Not sure what the Voltages are.

How much would I have to undervolt to change the temps by 10°C down from 90°C to 80°C?
Also how much performance am I going to lose?

 

You don't lose any performance by undervolting, you only lose performance when you underclock.

 

I thought undervolting results in a loss of clock speed, the same way that I thought overvolting results in a higher clock speed.

How much should I undervolt then do you think? If I undervolt too much could I damage my cards or lose performance?

Thanks

Edit: Found this. http://forum.notebookreview.com/threads/the-undervolting-guide.235824/

Going to definitely give this a shot. Thanks so much for the advice!

 

Okay so I tried undervolting with NvidiaInspector.

Using the stock speeds that I mentioned above (1098MHz core & 2700MHz memory):

@ -112.5mV Temps wouldn't increase past 94°C. It took roughly 8 minutes to get to this mark. (GPU throttles automatically @ 97°C so it was nice that it didn't get there).
@ -125mV FurMark crashed after 2 minutes.
@ -150mV. FurMark crashed instantly upon starting. Obviously I can't go that low.

It's important to note that I cannot get my Ultrabay (2nd GPU) to work AT ALL on Furmark. Also FurMark incorrectly displays my 2nd GPU as GPU 1 and my 1st GPU as GPU 2. I've tried absolutely everything I can to get it to run my second card and even though it displays them working correctly in SLI it won't utilise the second. (Can't feel any heat coming from its vent).
Also I can't raise the clock on either cards at all with any of these lower voltages. Doing so causes the computer to instantly reboot.

At this point it seems as low as I can go is -112.5mV, and even then it seems only semi-stable and it causes issues in games:

I tried to play WoW at the stock clocks with the undervolt at -112.5mV and the gameplay definitely felt more sluggish. Whilst the framerate sat around 40Fps it definitely felt like it was sluggish and not smooth even though the FPS overlay didn't report any drops at all. The game still goes black very often and stops responding and the screen flashes. After shutting the game down the PC crashed soon after, music got stuck on loop and the laptop rebooted without stating what the error was. I'm guessing that 112.5mV is still too low. The final temps that were reported were only 66°C on both cards. So I have no idea why the game still stops responding...

 

Honestly, I don't think you should be getting these temps. Given that you already repasted, cleaned the dust off the fans and you're also using a cooler, I wonder why you're hitting such high temps. Did you consider having Lenovo change the heatsink? I mean maybe it's a faulty one. I see that you live in Finland, so I suppose room temperature isn't an issue either. I have 2 lenovo notebooks at home ( Y570, Y5070 ) and none of them seem to have issues regarding temps, even though room temperature is relatively high.

Good luck!

 

Hey thanks so much for your replies. I am pretty sure my warranty is void for repasting and modding the bottom of the laptop fan openings to increase airflow. Not to mention modding the BIOS, installing a Wi-Fi adapter that isn't Lenovo brand or whitelisted and for modding the GPU BIOSes...

I don't think they'd want to repair my laptop under those conditions.

I also have no idea why my temps are so high especially with a cooler. Looking at my indoor thermostat now room temp is 23C... My temps have always been like this. No idea why. I also have a desk fan aimed at my laptop...

I just finished running Memtest86 and got no errors either. I have no dust in my laptop either obviously and both fans are clean... I'm really stumped...

 

What method did you use for repasting?

 

The pea dot method. Not credit card or anything else. Made absolutely sure that the CPU and GPU were both firmly against the heatsinks. I've never repasted the Ultrabay card.

 

This is frustrating, I feel you. I don't know what else you can do, you already tried everything.

 

I appreciate the help so far a lot. Like I said I'm pretty sure I got a lemon. I have no idea either.

I'm going to test the VRAM and see if there's a problem there. At this point I just think the issue is due to overheating.

I also thought it could be something to do with drivers, I was thinking of going back to older drivers but at this point I am not really sure any more. I don't even know if it's worth the time as I don't see drivers impacting on temps really at all.

I should have had my laptop looked at by Lenovo when I saw temps like this before I started making adjustments myself. I'm just a bit worried that if I send it back they will laugh at me and then ask me to pay them to send it back to me in the same condition...

I'm glad your Novos are working well though.