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Outlander_04 :
90 - 100 C is way too hot
Your BIOS should be throttling the cpu back so it never gets that hot .
This is bull. We are not talking about an AMD chip here. Temperature limit for Haswell is 100°C, and that's where it does throttle, so everything is fine from that perspective. The question is why the chip gets that hot in the first place.
The temperature itself is not much of an issue for Haswell, the throttling is what you do nto want to happen for obvious reasons.
Note that 100°C can be reached under heavy load, but that should require running Prime95 torture test on all cores, not watching a simple twitch.tv video. Check your cooling. If all else fails, you can resort to de-lidding your CPU. That is a procedure that requires effort and is not entirely free of risk, but will definitely bring down your core temperatures big time.