MediaTek's Helio X20 chipset, the industry's first deca-core endeavor, is fresh out of the oven, and with it comes the inevitable comparison with the elephant in the mobile chipsets factory - Qualcomm's Snapdragon 820, which has Qulacomm’s custom CPU - Kyro CPU. There will be Adreno 530 GPU clocked at 650 MHz. The best thing is that it supports DDR4 RAM with even faster speed. Another better thing in Snapdragon 820 is that it will support Category 10 4G LTE that has download speeds of up to 450Mbps and supports LTE FDD / TDD, DC -HSPA, TD-SCDMA / EDGE, CDMA20001x, EV-DO Rev networks.
As the first chipset with 10-core, MediaTek Helio X20 achieved this with tri-cluster architecture: two powerful Cortex-A72 units, clocked at 2.5 GHz, then four lowly Cortex-A53 pieces, running at 2 GHz maximums, then a quad pack of Cortex-A53s again, which had been clocked the lowest, at mere 1.4 GHz, for the unassuming tasks.
From the specifications and comparison table above, the 820 sports four custom Kryo cores that are at least as powerful as ARM's standard Cortex-A72 architecture, and also features DDR4 RAM tech support, while the Helio X20 maxes out at DDR3. Snapdragon 820 also has a custom GPU that supports screens with higher resolution than the X20, as well as 4K video encoding at double the framerate of MediaTek's deca-core champ. Last but not least, Helio X20 is built with the 20nm process, against 14nm for Snapdragon 820, and Qualcomm has bundled its upcoming juggernaut with LTE Cat. 10 modem, while the X20 sports a Cat. 6 radio only.