[bighap]

From what I've heard, its not too great of a chip. This is what charlie had to say about it:
NEO4.x Charlie's rating: 4/10
NEO4 was announced in July 2001 & delivered in December 2001. It has 44 wires! CD-R backups (other than EA games) require no swap - they boot directly. There are special swap procedures for EA CD-R & DVD-R games. Import originals do not boot with this mod.

All in all, for 44 wires of install heartache, this is a disappointing mod.