Hmmm. LE1 blinks then shut off, BMC comes online and heartbeat blinks.
When I try to start via ipmi it fails, post code FF.
On PSU power cycle the fans start up and processor gets warm, ipmi reads power is on but it doesn't post.
Thought it must be ram but now I have no idea.
Board is brand new and tested from supermicro (previous board was actually defective)
EDIT: Turns out the CPU was also defective (both board and CPU were defective!). New one works great.