This paper presents two high performance FPGA architectures for the 2D DCT computation for Ultra High Definition video coding systems. Both architectures use Distributed Arithmetic to perform the necessary multiplications instead of traditional multipliers. The first architecture uses 105 clock cycles to transform an 8×8 block and reaches a rate of up to 206 samples per second at a 338.5 MHz frequency, while the second one requires 65 cycles for each 8×8 block and achieves a rate equal to 252 samples per second at 256 MHz. Both architectures have been implemented using VHDL. Virtex7 FPGA of Xilinx has been used for the realization of both implementations.