OpenCL-Based FPGA Accelerator for 3D FDTD with Periodic and Absorbing Boundary Conditions

Table 2

Comparison with GPUs and CPUs using single-precision floating-point computation.

	FPGA		GPU		Multicore CPU
	DE5	395-D8	GTX680	GTX750Ti	i7-4960x	E5-1650 v3
Number of	—	—	1152	1024	6	6
Core clock frequency (MHz)	260	193	980	1127	3600	3500
Memory bandwidth (GB/s)	25.6	34.1	192.2	86.4	51.2	59.7
Peak performance (Gflop/s)	193	1502.9	3090	1305	345.6	672
Processing time (s)	6.31	7.36	9.39	10.71	23.63	20.84

: CUDA cores; multicore CPU: CPU cores.