Microsoft will be forced to block all tweaking and perhaps even running XTU. The Internet is ablaze with, its too hot, its throttling, Why is my CPU/GPU frequency xxx. etc. etc. Its a completely counterproductive distraction. Try to run XTU on a MacBook Air it says platform not supported. End of story. The thing gets much hotter than a Surface, its fan noise measures over two times as many decibels and decibels is logarithmic not linear. Something that sounds twice as loud is only 10 decibels greater. Running the same test we measured 35db noise level on a Surface and 75db on an MBA. Intel built these chips to have multiple limiting mechanisms so systems could be built with different heat dissipation profiles using the same part. Still they manufacture Haswell parts with different specs, they come in 11.5w, 15w, and various 2x, 3x, 4x, 5x 6x, and 8x watt packages. Generally processing power increases with the power in watts but the two are only loosely related. The 15w part outperforms the 11.5w part and it can be shown that a throttling 15w part outperforms an 11.5 w part. Grousing about does a 15w part run at maximum speed is pointless in the context that it outperforms what the 11.5w part could do. I submit that Microsoft should lockout reading all metrics and disable support for tuning utilities like XTU and operate as a blackbox.