Here's a simple relation of all the known PSP Motherboards. There are different versions of them, but are just virtual ones, you won't find a difference printed on the board.
For the ones that don't know yet, Baryon is same as the syscon, and Tachyon is the chip that contains the ME, CPU,and VRAM decryption mask roms.
For the ones that don't know yet, Baryon is same as the syscon, and Tachyon is the chip that contains the ME, CPU,and VRAM decryption mask roms.
More info --> http://alek.dark-alex.org/