Suppose that your team has successfully developed a MIPS-style single-cycle design for the smart glasses processor. One of your team members, Lineo, is a great digital circuit designer and has offered to re-design one of the units in the single-cycle MIPS processor to have half the delay. Using the current delays shown in the table below, which unit should she work on to obtain the greatest speedup of the overall processor, and what would the cycle time of the improved processor be?

Element Parameter Delay (ps) Register clk-to-Q tpcq 30 Register setup tsetup 20 Multiplexer tmux 2.5 ALU tALU 200 Memory read tmem 250 Register file read tRFread 150 Register file setup tRFsetup 20