looks like there's at least this many variants of the crow mgmt board:
Hm...I kinda doubt it - it looks like the powerucd profiles suggests that some Crow boards uses 1.5v DIMMs, while others uses the 1.35v DDR3L, but I am not sure the ECC RAM used by the Crows actually come in the 1.5v form, so while it is possible, it's fairly unlikely.
There are 2 versions of the Clearlake switch - a Clearlake (12MB packet buffer) and a ClearLakePlus (16MB packet buffer). I spent the evening unpacking the squashfs image so I can poke around without firing up the switch (which is in my $dayjob office going through a burn-in anyways).
So, fun times deciphering the entire 7050 family, here's the 411:
7050 (model number)
Connectivity type:
TX (10GBaseT/copper connectivity - I have no idea why anyone thinks that this is a good idea)
SX (10G SFP+ connectivity - much more like it)
QX (40GbE QSFP+ connectivity - can be broken out into quadruple SFP+ links)
If the Connectivity type is trailed with a 2, it's a "plus" model with more system RAM and a bigger packet buffer in the switch. The trailing S tells you whether you are getting 4 more SX ports on the switch or not. There is also a Q in certain models, but I think that's typically used by the SX models to denote the presence of 4 QX ports.
Example: The DCS-7050TX72Q will have, hmmm...48 10GBaseT copper ports and 6 40 GbE QSFP+ ports. That's a Crow-only model, BTW.
I'll come by tomorrow and drop the codenames for the switches, but they are a headache to decipher. I also found out that the CPU board model in a given switch is not defined by model (well, it is), but it could also be production date. It seems that there are 7050QX-32 and 32S models that can be both Raven and Crow, it only depend on whether it came out before or after the Turion II Neo CPUs are retired or not - if it's produced after the cutout it'll be the Crow (with the GX420CA). There are also some interesting information about the family of CPUs used by Arista in their hardware.