Based on the same Navi 14 chip, the Radeon RX 5300M comes with the same number of compute / texture units and ROPs, but it gets lower bandwidths and VRAM capacities limited to 3 GB. Compared to the 5500M model. The reduced specs may lead to a performance drop of around 20%.
https://www.notebookcheck.net/AMD-launches-the-Radeon-RX-5300M-mobile-GPU.442773.0.html