Emerging reconfigurable systems: Exploring 3D FPGA architectures

Although FPGAs are a flexible alternative to ASICs, they suffer from interconnection delay which results in comparatively poor performance. Using 3D-FPGA instead of 2D-FPGA reduces the Manhattan distance between the components which results in reduction in interconnect length, delay and hence improved performance and speed. In this paper, we introduce the recent trends in 3D FPGA architectures, discuss the challenges, and display the performance evaluation metrics.