HARDWARE MINING. DEAR A QUESTION. ON VIDEO CARDS INFLUENCE RAM MEMORY? OR ONLY IT MATTERS THE NUMBER OF NUCLEOS THAT IS.

FOR EXAMPLE: Sapphire Radeon ™ RX 480 8G RAM Sapphire Radeon ™ RX 480 4G RAM

In this case, these two GPUs only varies the ram memory, does this influence mine mining?

Thank you.