Hi @Kyuubi Arcanis welcome to this free user-to-user Alienware laptop discussion forum. 

Thank you for providing a good opening post with image. Intel says that their processors should always be less than 100ºC maximum, so that Intel processors are not damaged. Having changed fans, motherboard and thermal paste, the original CPU Intel Core i9-2900HK performance has been reinstated. Hopefully, this thermal issue has been permanently fixed so that system now behaves as advertised. 

It is Dell policy that if same faults occurs on three separate occasions, the system will be replaced with same or higher specification. However, your existing Dell warranty is applied in the interim. 

Thanks for your answer crimson. 

Unfortunately the screenshot i've uploaded is after the components change. Always using cooling pad. 

Yet the CPU is over 100C sometimes and throttling..

I'll keep in check tempereature and performance.

Hi @Kyuubi Arcanis thank you for sharing update and that thermal throttling issue has not been fixed. 

Not sure how Dell Senior tier might respond to no temporary/permanent fix. These remedial Dell activities are usually privately addressed, not available in public posts. 

You should Sign In to your online Dell account and update the existing Service Request to Reject this repair. In response to 100% Dell Quality Assurance of their nominated external contractor and Dell New/Refurbished replacement parts, the user is responsible to inform Dell Support that Service Request has failed. 

Please click on @DELL-Cares and send Private Message requesting assistance.