Yeah, I'm at 165-180 watts with a single host running along with the pair of switches, cable modem, and AP. The second host has more drives so it's around 220 watts when it's on. I only turn it on for backups these days since I've got more than enough resources to run off a single host. My "original" rack setup from a few years back was pulling 1,400w constant. DL580 G5, 2x IBM x3650 M1's, 1x Home brew NAS, 2x Cisco Catalyst 2960's, 1x Cisco MDS 9128. Even ignoring the noise, that had a silly amount of horsepower for the time but that was $90/mo of electricity. So I decided I need to upgrade to something more efficient. "Stage 1" got that down to 650w. Now it's 400w with both running. That's $700/yr in electricity savings even with both running. 2 years of that will pay for the rebuild.
I've always hated HP's decision to force the high performance fan profile when you've got the riser cards installed. I've got 3x DL380 G6's in the closet still that did the same thing.