Manufactured on the same 14nm FinFET technology as Snapdragon 820, Snapdragon 821 will provide the next level of computing performance in upcoming Android powered handsets. \r\n\r\nQualcomm has detailed the description of Snapdragon 821 below:\r\n\u201cBuilding on the technology leadership introduced with the Snapdragon 820 platform, the 821 is engineered to deliver faster speed, improved power savings, and greater application performance, ensuring 821 powered devices keep pace with the growing performance demands of users to deliver the unmatched user experiences the Snapdragon 800 tier is known for.\r\n\r\nThe Snapdragon 821 is engineered to deliver a 10% performance increase over the 820 with the Qualcomm Kryo quad-core CPU, reaching speeds up to 2.4GHz. Why would you introduce something to replace what many consider the best mobile processor available today? Simple, we\u2019re not. Rather than replace the Snapdragon 820, the 821 is designed to complement and extend the competitive strengths of our Snapdragon 800 lineup.\u201d\r\n\r\nMost phones, like the upcoming Galaxy Note 7 have been rumored to feature a Snapdragon 821, and yes, the chipset does deliver more computing performance, but it does not exactly reciprocate battery life. You should be aware that Snapdragon 821\u2019s processor is clocked higher than the Snapdragon 820\u2019s, with the details listed below:\r\nSnapdragon 820\r\n\r\n \t2 x Kryo @ 2.2GHz + 2 x Kryo @ 1.6GHz\r\n \tGPU: Adreno 530 @ 624MHz\r\n\r\nSnapdragon 821\r\n\r\n \t2 x Kryo @ 2.4GHz + 2 x Kryo @ 2.0GHz\r\n \tGPU: Adreno 530 @ 650MHz\r\n\r\nManufacturers who have decided in the end that a Snapdragon 821 is going to be their pick for future devices should also be aware that a higher clocked processor will require them to fit in a larger battery capacity. Failure to do so might not end up delivering the user sufficient battery life, but there are also ways in which you can downclock the processor in order to conserve more juice.