Also consider that many xeon workstation/server boards have limited sleep state support. Any newer i3/i5/i7 will enter S5 sleep and barely sip 1w, with instant

Also consider that many xeon workstation/server boards have limited sleep state support. Any newer i3/i5/i7 will enter S5 sleep and barely sip 1w, with instant on wake. The time you save sitting waiting for the machine to start up (workstation/server boards are also insanely slow to post) will be worth the investment in a newer setup.