Motherboard

Must be the *exact* same motherboard : Supermicro H8DMR-i2, also known as Supermicro H8DMR-82

Processors

2 x Opteron 2214 HE Low-Power (2.2GHz, Dual Core, SktF, 1 MB/Core L2 Cache)

RAM

No matter, but buy it all in once to avoid surprise.