If you're trying interested in the power usage (and not just trying to make a point or comparison), I just recently built a very similar box (same motherboard a

If you're trying interested in the power usage (and not just trying to make a point or comparison), I just recently built a very similar box (same motherboard and CPU, different RAM, and 4 TB instead of 6 TB HDDs + a pair of SSDs for the OS and ZFS ZIL and L2ARC). I can plug it into my Kill A Watt and measure the power consumption if you'd like.