Hi,
even if 2352(B3) are not offcially supported, they work without problems.
I made the same thing as you before getting my reg rams; don't worry, the situation is different between FXs and Barcelonas.
FX IMC don't require the bit parity check with ram, so when they are initialized they don't ask for ram directly so the motherboard makes a beed (noRAM beepCode).
Barcelona based processor's IMC require the parity check with ram due to their design, so if there is no ram available the IMC can't initialize and the processor won't initialize, so the motherboard can't even know that a CPU (or both) is installed.
Trust me, there's no problem, your system will work when ram arrives.
welcome to the dual socket world!
Yankee