If you had your doubts regarding the 64-bit octa-core Snapdragon 615 SoC HTC Desire 820 and its 64-bit Octa-Core Snapdragon 615 SoC, the latest teases from HTC and Qualcomm clear things up quite nicely. Qualcomm has posted a new image to its Weibo account, confirming that the phone will be powered by the new Snapdragon…