With the variable-precision digital signal processing (DSP) block, the Stratix® V FPGA supports, on a block-by-block basis, various precisions ranging from 9-bit x 9-bit up to single-precision floating point (mantissa multiplication) within a single DSP block. This frees you from FPGA architecture restrictions, allowing you to use the optimum precision at each stage of the DSP datapath. You'll also benefit from increased system performance, reduced power consumption, and reduced architectural constraints. Figure 1 shows the Stratix V FPGA variable-precision DSP block architecture in the 18-bit precision mode. Figure 2 shows the Stratix V FPGA variable-precision DSP block architecture in the high-precision mode.