[9560] CPU Throttling under load

I've repasted with Kryonaut and added 6 W/mK arctic pads to 4 VRM locations as per the ultrabookreview guide. CPU loves to throttle down which is gimping gaming performance.



Takes around 10-15 minutes for it to start throttling. Ambient etc all seem OK?

 

0% gpu load - p95 for 5~ minutes hit 1700MHz throttle: http://i.imgur.com/BFxxmZs.png

It seems package hit 85c after 5 or so minutes. Idle temps are around 52-55c after repasting with Kryonaut

 

I am not sure if you are aware we have a dedicated thread to the thermals on the 9560, give it a good read and you will see depending on the capabilities of your CPU (no 2 are the same) and the ambient temperatures that it is to be expected.

http://forum.notebookreview.com/thr...rature-observations-undervolt-repaste.785963/

I would avoid going crazy and sticking thermal pads everywhere as only a small percent gained a benefit when the rest of us noted it just heated the chassis to the extent it caused it to pull in hot air making matters worse after a period of time. The same applies to changing the VRAM pads as they are low heat transfer to stop the heatsink dumping heat into the VRAM rather than removing it triggering a throttle.

Either way you are better posting this in that thread but you are not going to make it better as it isn't a gaming laptop.

 

Oh awesome thanks for that, ill dig through there. I rather meant I added pads to 4 MOSFET locations not the VRAM - haven't touched those.

 

This has been reported by many. The issue seems to be caused by VRM area overheating. VRM pads help a little but not enough. One reportedly successful mod is not as simple, involves adding cooling surfaces to the VRM mosfets and redirecting some of the cooling air from the fans over there.

http://forum.notebookreview.com/thr...ures-benchmarks-xps-15-9560-kaby-lake.802345/

If you're not prepared for such modding, you can consider restricting quality settings and fps, and turning down the power to the CPU and iGPU in Advanced power options (power profile), so that the GPU is more likely to run unthrottled.

Other simple things, you should try undervolting if you haven't already, and lifting the rear of the laptop by a few cm also helps a little bit.

 

It's not thermal throttling, it's TDP throttle. Intel thermal & dynamic framework is responsible for that. Remove it in device manager and make sure Windows doesnt auto reinstall it and you won't get thermal throttling anymore.

Downside is that the system will get hot. The bottom of the case will become almost too hot to touch. Plus that all the components will be stressed to the max.

So I'll strongly advice you not to use it, if you care about your system.

 

I have to say only a fool will disable something that stops the laptop going past its thermal limits in something that has poor cooling like the XPS9560.

 

Of course but im not seeing how 77c cpu cores and 72c ambient is any issue at all ><

 

Yet.

 

If the laptop is going to die under 70c loads im just going to return it lol.... I'm getting throttling while debugging in visual studio, mouse lags for 2+ seconds at times, its really not fun.

 

You only see temperatures at sensor locations. VRM mosfets may be over 100 oC at that time. Just read the two linked threads, this overheating is real not fiction.

Some other laptops with similar horsepower and dimensions have cooling plates or heatpipes for the VRM mosfets. It appears that more proper cooling within XPS 15's physical dimensions is feasible after all, but that it is not as simple as adding a few thermal pads.

 

Whilst a CPU temp of 70 is fine an ambient is not.

 

Yeah I played around a little, routed some of the airflow with left over pads as well as trimming the pads on mosfets to fit exactly. I also removed a 1mm pad from each mosfet so they are 3mm stacks now. Temps have been sitting at 70c solid after 1+ hour of gaming and cpu is fluctuating between 2400Mhz and 2700Mhz.

I did disable turbo and speedstep and c-state
Dell power manager is set to ultra performance.

 

I did a hell of a lot of tinkering and ended up taking everything out, fixing the issue with the vram pad that sits with a bit of heatsink missing and repasting the CPU/GPU, works fine now.