Came across a few 5870s on the cheap recently and figured I'd just toss them in my desktop rather than go order another rig kit. I don't have enough power [see attached] to run both currently, so I began to play around with underclocking the 5870s. I found that I could save 50w-60w per card and still get a good hash rate while using the desktop [no gaming, no photoshop, etc].

Or, at least that's what I think, I would like some opinions:

1) any way to get more h/s? or am I about maxed [for THIS situation]?
2) do all of these screen shots [data/config] look correct?
3) is the green highlighted area in my xlsx the 'sweet spot'?
4) any changes or commentary?

Essentially, and much appreciated, check my work! 

Underclocking 5870 Power/Hash Results
http://i.imgur.com/zB7bdJM.jpg

CGMINER BTC Config for 5870 Underclocked
http://i.imgur.com/DNSpcxL.jpg

CGMINER LTC Config for 5870 Underclocked
http://i.imgur.com/ogqr45D.jpg

CGMINER BTC GPU Screen and Config for 5870 Underclocked
http://i.imgur.com/JxmToDJ.jpg

Link to imgur gallery: http://imgur.com/a/MDnlp#0