alienware you need to implement CPU/fan performance in17r2 bios

Seriously,

My new 13R2 (6500U, 960m) can support unigine valley + wprime test with +130+250 O/C on the GPU. Absolutely no throttling (CPU 3.01 GHz and around 82°C on the CPU)

I did the same test on my 17R2 (4980HQ 980m, A0, 240W) with a similar O/C and it resulted in a crazy throttle of the CPU . ( XTU was reading thermal throttling around 30% which was not the case with my 13R2, even with comparable temperatures!!!)
valley+wprime with the 980m at stock clock on the 17R2 resulted in the 4980HQ sticking at 2.8GHz powered with limited wattage (something around 20-24W, I don't remember exactly).

But the worst in that story is that the 4980HQ was not even crazy hot, it reached 80°C and then downclocked like stupid and stay at 70°C!!!
If the my 6500U can run at full clock speed even after reaching 80°C under heavy load, why my 4980HQ is stupidly downclocked in the same scenario??

To me it looks like a limitation in the bios, nothing to do with hardware. My 17R2 gives me satisfaction in gaming scenario but it is clearly borderline under extreme load.

I read somewhere that someone resolved throttling problems by enabling CPU performance in the bios of a AW15 of skylane generation. We just need a good bios as weel for the haswell generation.