I purchased my Y570 aprox. 1 month ago. For the first week, I had no problems running games/applications at highest settings. Over the past two weeks though my laptop has been unuseable.
For my tests and results I've used speedfan, gpuz, cpuz, and FurMark.
At idle with the graphics card "disabled" by the hardware switch, it sits around 60-65c.
At light load (gpu usage < 25%) the temperatures reach 80c within 2 minutes and continue upwards towards 95-100c.
At any higher load it reaches the 95-100c range in under 5 minutes.
For all load tests my laptop went from a cold start with the gpu starting around 35-40c.
Once it reaches 100c it begins to throttle itself with the core clock dropping down to sub 200mhz. Even at this extreme underclock, the gpu is still unable to cool itself and remains +95c until all load on the gpu is stopped.
I have done various clean installs, flashed the most recent bios, and tried various combinations of the updated energy management and nvidia drivers; nothing changes the overheating.
Based on my own results and various other posts on the web, the only conclusion is that this is a serious hardware problem. Not only that, but it seems relatively obvious that the problem is the thermal paste applied to the cpu and the gpu based on results of people who have reapplied their own paste correctly. Sending my laptop into lenovo for maintence or getting an entire new laptop does not seem to fix the problem based on other users results with those options. The thermal paste application is still flawed on a returned model or a new model.
This is unfortunate that the only successful way to make my laptop run correctly AND SAFELY is to void my warranty and properly apply thermal paste.
Thoughts? Agree? Disagree? Did I miss anything? I really like this laptop and when I first got it I thought it would have no problems thermally due to its seemingly well enginered heatsink, fan, and heatpipes. To have such a well enginered solution fail due to a quality control issue is really embarasing. I will not be purchasing another lenovo after this, and I'm actually rather disappointed by that.
