We have been developing Optically Reconfigurable Gate Arrays (ORGAs). An ORGA consists of a laser array, a hologram memory, a gate array VLSI. Such ORGA can optically be reconfigured by using two dimensional optical bus in a very short time. Also, since a holographic memory has a large storage capability, an ORGA can achieve large virtual gates. Up to now, an optically differential reconfigurable gate array to increase reconfiguration frequency with no increase of laser power and a dynamic optically reconfigurable gate array to achieve a high gate count VLSI have been proposed. However, architectures with both advantages have never been developed. Therefore, to realize both advantages of rapid configuration and a high gate count, this paper presents a novel fast dynamic optically reconfigurable gate array VLSI that combines both architectures. In this study, a design of the fast dynamic optically reconfigurable gate array VLSI is presented.