Qualcomm Snapdragon 821 vs 820 Main Differences Explained

Main differences between Qualcomm Snapdragon 821 vs 820 mobile chipset and did you know OEM can select between 2 different versions of 821 SOC for there mobiles and the differences explained compared to Snapdragon 820 Hindi version of this video https://www.youtube.com/watch?v=4j9zVZwOQ0U My Hindi Channel https://www.youtube.com/GeekyRanjitInHindi