According to this
article, Resolve uses nVidia CUDA which PD stopped supporting long ago. Many other editors use CUDA.
As JL_JL wrote, PD only uses hardware NVENC in supported GPUs, and this
chart shows which nVidia chips have that feature. You can see that the MX450 has no hardware encoding capability, and not even any NVDEC so it's unsuable as far as PD is concerned.