Some of the best dual processor motherboards are the following :

The Asus Motherboard E7520 Dual Xeon 800 MHz FSB EEB 3.51, Max 16 GB DDR2. This smother board works with a 64 bit performance operating system and it has a great server connection and has complete RAID support for ICH SATA port and SCSI/SATA controller. It has been on the market since 2005 and it is made by ASUS.

The Motherboard nForce 680a, SLI has dual Athlon 64 FX, CEB with Max 8 GB DDR2 with PCI and GBE. This is a multi core and multi socket piece. It is used for the desktop and there is cache memory installed, Ram installed and a compatible processor is the Athlon 64 FX, it has 2 processors and the chip set is a NVIDIA n Force 680a SLI. The network is a Gigabit Ethernet and the IEEE 1394 Fire Wire.

The Tyan Motherboard 8131 has a Quad Opteron it has a powerful 4 way and it has the Thunder K8QSD Pro, it also as a 4 way platform that is created to support the dual core AMD Opteron processors. It has been available since 2006.