This is a special package of hard to source components. The Opteron 185 combined with the ASUS A8N32-SLI motherboard and latest bios (ver. 1409) actually supports 16GB of ECC memory as installed (see BIOS screenshot). I ran my TRUENAS Scale server on this exact configuration with great results. This listing includes:

• AMD Opteron 185 - Opteron Denmark Dual-Core 2.6 GHz Socket 939 110W Processor - OSA185DAA6CD
• ASUS A8N32-SLI Deluxe - no leaking capacitors, BIOS updated to ver. 1409 - includes MB backplate
• M312L5128AU1-CCC Samsung 16GB(4x4GB) 184pin PC3200 ECC DDR Server Memory
• Noctua CPU heatsink and cooling fan

Due to the special interoperability of this set, I'd rather not sell any components separately, but feel free to inquire about other listing arrangements. Further, you are welcome to ask configuration questions as well as links to OEM documentation and forum links that have been helpful to me in configuring this setup.