Hi @crimsom . Thanks for your reply.

I should have mentioned that the laptop reaches 90°c when I'm not playing any games, just browsing the internet.

While on battery the temperature is 50 to 65 °c.

I think 90 °c is too much for basic tasks.

Hi @Aimad  guess you mean is that, when laptop is powered by both ac adapter and battery, the CPU gets hotter. This not surprising because with more power available, the Dell G5 15 5500 performance has also increased.

If the CPU exceeds 100°C, it should trigger automatic shut down with full fan speed to ensure that no permanent damage occurs on this gaming laptop. 

Hi @Aimad  thank you for sharing update. Agree with your assessment. Expensive Dell Alienware series and Dell G series gaming laptops run hot and the cooling system always seems inadequate. My expensive new Dell Alienware 17 R5 gaming laptop is a big disappointment, and spends most of its time in storage cupboard. My old budget ASUS 17" gaming laptop has superior gaming performance, a better cooling system and is used most of the time. 

Thanks for the answer.

The CPU temp is much stable when I reduce CPU frequency (3000 Mhz), and there's not a differecne when playing or rendering.

All I can say about your 'Community Accepted Solution' is HORSE HOCKEY. You should fire the engineering team that accepted this build when they knew that the CPU overheats with ordinary usage. My system maxes out at 100C basically every day no matter how low I set performance and just for your information. 100C does not trigger an auto-shutdown by the way. As I have seen some say here. Try again, Dell.................

You are absolutely right.

Mine's been overheating since the day I bought it.

After many attempts at other solutions. I simply went into the BIOS setup and disabled TurboBoost. Plugged in and idling at the highest battery saver settings I easily hit 97-98C. After disabling TurboBoost my CPU hasn't gone over 60C.

So the fix is too disable TurboBoost, reduce CPU frequency etc? Guess I should have bought a normal laptop? Why pay all this money for a gaming machine when a 700 laptop is the same? Rip off artists... Mine shuts down everyday...soon be a door stop