[U-Boot-Users] CPU or Northbridge?

Hi all, I have to configure my board for U-boot.

My board contains a: - PowerPC 750 FX as CPU - Marvell Discovery GT-64261 as Northbridge

and I found two interessant boards (in the Directory <uboot>/board): 1) board/Marvell/db64360 with: - PowerPC 750FX - Marvell Developpement Board 64360 2) board/evb64260 with: - MPC7400 - Marvell Discovery GT-64260

So I ask you what is better to begin, a board with the same CPU as mine (1) or a board with nearly the same Northbridge (2)? Thanks,