Summary
User reports Qwen3.8 27B at 20 t/s split between an RTX 3060 12GB and an RX 9070 XT, and at 5 t/s on a 780M iGPU with 5400MHz DDR5.
The 20 t/s figure is for the two-GPU split configuration and the 5 t/s figure is for the iGPU.
User prefers the 5 t/s iGPU setup for system usability.