They don't share chips, and the GBC should be much more powerful than the NES. The NES had a CPU based on the MOS Technology 6502 running at around 1MHz, 2KB o

They don't share chips, and the GBC should be much more powerful than the NES. The NES had a CPU based on the MOS Technology 6502 running at around 1MHz, 2KB of RAM, 2 screens of video tile memory, and 2 sprite layers, with support for 64 sprites, max of 8 per line. The GBC had a CPU loosely based on a Z80 running at about 4 or 8MHz, 32KB of RAM, smaller resolution, more colors available (and more displayable on-screen at once), fewer sprites (40), but more displayable on one line (10).