IPMI sdr entity 8 (memory module) only showing 3 records?

I've got two Dell PE R710's -

• A has a single socket and 3 DIMMs in one bank
• B has both sockets and 6 (2 banks @ 3 DIMMs) filled

The output from "ipmitool sdr entity 8" confuses me - according to the OpenIPMI documentation these are supposed to represent DIMM slots.

Output from A (1 CPU, 3 DIMMS, 1 bank.):

~#: ipmitool sdr entity 8

Temp             | 0Ah | ok  |  8.1 | 27 degrees C
Temp             | 0Bh | ns  |  8.1 | Disabled
Temp             | 0Ch | ucr |  8.1 | 52 degrees C

Output from B (2 CPUs, 3 DIMMS in both banks, 6 total):

~#: ipmitool sdr entity 8

Temp             | 0Ah | ok  |  8.1 | 26 degrees C
Temp             | 0Bh | ok  |  8.1 | 25 degrees C
Temp             | 0Ch | ucr |  8.1 | 51 degrees C

Now, I'm starting to think this output isn't DIMMS themselves, but maybe a sensor for each bank and something else? (Otherwise, shouldn't I see 6 readings for the one with both banks active?)

The CPU's aren't near 50 deg C, so I doubt the significantly higher reading is due to proximity - Is anyone able to explain what I'm seeing?

Does the output from my ipmitool sdr entity 8 -v here on pastebin seem to hint at different sensors?

The sensor naming conventions are poor - seems like a dell thing.

Here is output from racadm racdump