The Helio G90 and G90T use an unspecified combination of eight Cortex-A55 and Cortex-A76 — ARM's first 7nm design seen in Huawei's Kirin 980 — with speeds of up to 2.05GHz. That CPU comes along with the standard Mali-G76 GPU and a Cat. 12 LTE modem with 4x4 MIMO antennae and 3x carrier aggregation. The chip supports up to 10GB of LPDDR4x RAM, a 64MP single rear camera or a dual system with 16MP and 24MP sensors, and dual wake word recognition to trigger Google Assistant or Alexa.

Tellkis reports
https://tellkis.com/2019/07/31/mediatek-helio-g90-helio-g90t-socs-gaming-chipset/