If you’re using a relatively recent, non-Apple, sold-in-the-US smartphone, odds are good that it contains some kind of Qualcomm SoC. From 2011 or so up until now, the company has used a potent combination of LTE modems and custom CPU and GPU architecture designs to shove most of its early competitors (Texas Instruments, Nvidia, and Samsung) to the margins or out of the business entirely.
After a long string of successful flagships, the Snapdragon 810 has been a bit of a disappointment. At its best, it can be faster than the Snapdragon 800, 801, and 805 chips that it’s replacing. But the two 810-equipped phones we’ve used—HTC’s One M9 and LG’s G Flex 2—have definitely run hot, and performance slows down quickly as you use the phone.
Throttling processor speed in smartphones, tablets, and laptops to avoid overheating is completely normal, but the 810 runs especially warm. More interestingly, Samsung’s Exynos 7420—a chip which uses the same combination of Cortex A53 and A57 CPU cores at roughly the same maximum clock speed—is much faster than the 810, and it holds up better during extended use.
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