Hi,
They are pretty nice:
Here what I found
http://www.intel.com/support/processors/sb/cs-030747.htm
http://forums.anandtech.com/showthread.php?t=2077836
http://communities.intel.com/thread/30457
Basically they are unlock cpu (can be overclock easy) given to manufacturer's for test purpose.
Different things can happen here, some instructions might be disable, core lock / unlocked.
From there QDNR is you identification code, but didn't find anything on that.
Do you have a mobo for it ?
No motherboard unfortunately no!
Thanks for the info, still dont know exactly what they are though