It looks like supermicro doesn't differentiate on the range of series just series itself.
http://www.supermicro.com/manuals/brochure/X9_Heatsinks_socketR.pdf
I would install my littles E5-2670 into a CSE-815TQ-600CB chassis that is a 1U dimension.
I thinked to buy SNK-P0047PSC !! is it compatible both with the chassis, motherboard and the CPU ?
I'm little afraid to use a passive heatsink, but with the airshroud, it should be ok imho.