Atom C2758 vs C2750 for FreeNAS

Hey guys, so I've recently been looking a lot at the new 8-core Avoton/Rangeley Atom boards by SuperMicro, they seem like very solid platforms for FreeNAS (moreso than the ASRock boards - better NIC and SATA controllers, more DIMMs, better layout).

I'm just confused about one thing - there are two versions of the 8-core Atom with only minute differences:

SuperMicro A1SAi-2750F: supports only Intel...

Atom C2758 vs C2750 for FreeNAS