Saw the Opteron 6128's are now $95 OBO on ebay. 8 Magny Cours Cores at 2GHz.
Not the fastest, but you can pick two up and have access to 2P or 4P boards with 8 DIMM sockets per CPU (and they accept Registered ECC DIMMs). If you just want a machine with a lot of RAM these are pretty decent CPUs. I settled on these for my 2P Opteron 6128 system. 8x 4GB is a very inexpensive way to hit 32GB of RAM for ESXi.
Not sure what they are accepting, but seem to have quite a few and at under $190 for two they might make a good deal.
Here is a 4P G34 motherboard + chassis currently at around $700.
Not the fastest, but you can pick two up and have access to 2P or 4P boards with 8 DIMM sockets per CPU (and they accept Registered ECC DIMMs). If you just want a machine with a lot of RAM these are pretty decent CPUs. I settled on these for my 2P Opteron 6128 system. 8x 4GB is a very inexpensive way to hit 32GB of RAM for ESXi.
Not sure what they are accepting, but seem to have quite a few and at under $190 for two they might make a good deal.
Here is a 4P G34 motherboard + chassis currently at around $700.