I measured the external temperatures of the four quadrants of the notebook after 40 loops of 3DMark's Fire Strike Extreme stress test. This amount of time is more than enough to get an idea of your average maximum running temperature for this workload.
In terms of CPU and GPU temperatures under load, the Omen 15 didn't really stand out and produced temperature figures that were slightly toastier than the competition. However, the good thing is that the palm rests remained remarkably cool while under load, a crucial point for anyone hoping to use the notebook for long gaming sessions. It looks like HP has done something right when it comes to heat distribution, and the Omen 15 should remain pretty comfortable to use throughout.
I used the built-in battery life benchmark in PCMark 8 Home to assess the battery life on the laptops.
Unfortunately, battery life is one of the weaknesses of the Omen 15. It's not terrible by any means, but it is some ways behind its rivals in this category. The 70Wh battery is a decent-sized unit to work with, but it's still smaller than what the others are offering. This is especially disappointing, considering that the Omen 15 is the largest and thickest of the lot, so it seems like HP should have had more space to cram in a larger power pack.
The portability index is an objective measure of how portable a notebook is, taking into account factors like size, weight, and battery life.
The Omen 15 may be a Max-Q notebook, but it doesn't exactly impress in terms of portability either. Ultimately, the combination of shorter battery life, heavier weight, and thicker dimensions means that the Omen 15 doesn't compare that favorably with the other Max-Q laptops.