I've only loaded POGS on it so far to see what sort of RAC I get: http://allprojectstats.com/show.php?projekt=0&id=29095466. Around 1000. Fairly low. I've been meaning to recompile that binary and also test some other projects. Should probably load some NCI projects on there (OProject and WUProp).
I've yet to load up my second U2 with Android to give NativeBOINC a shot, but I will shortly. I will! I need to got get some correct fitting DC jacks. I'm not repeating what I did with the current one that's on and I don't wish to share it due to the dodgy levels.
In the meantime, I thought I'd post some links Ray_GTI-R has been sharing as they're quite useful. In case you don't know, he's fairly active in the community when it comes to ARM crunchers. Ray, hope you don't mind me giving you a plug.
His NativeBOINC U2s in the lead:
5V distribution board for his gear:
Fully fused distribution board for 5V 10A PSU. Each output has a 2.5A slow-blow fuse (all Maplin items) to each ODROID.
5V power supply:
http://www.ebay.com.au/itm/110923861995 I've actually just purchased one of these!
DC jacks for U2:
Power supply warning:
Cheers Ray for sharing your experiences with us!