iBook G4 12″ 1GHz Logic Board New! $200.00 Early 2004 A1054 iBook G4 12" 1GHz Logic Board New! quantity Add to cart Add to Quote Continue Shopping Category: Parts (iBook G4) Tag: ibook g4 Description New old stock, this new logic board came from a dealer liquidating their old assets. Apple 661-3188, 820-1606. 1GHz logic board for the 12″ iBook G4 Early 2004 with 256MB on board memory and 32MB VRAM.