89P7947 - IBM Pentium 4 System Board with POV for ThinkCentre M50 89P7947 - IBM Pentium 4 System Board with POV for ThinkCentre M50 $128.15
29R7228 - IBM 8177 Pentium IV System Board for ThinkCentre 29R7228 - IBM 8177 Pentium IV System Board for ThinkCentre $198.72