MediaTek Helio G90T Advantages
Higher Frequency (2050MHz vs 2000MHz)
Lower TDP (5W vs 9W)
Released 11 months late
Qualcomm Snapdragon 670 Advantages
Better graphics card performance FLOPS (0.3584 TFLOPS vs 0.2304 TFLOPS )
More modern manufacturing process (10nm vs 12nm)