Thank you for replies and discussion
I have found access to two of the Gigabyte MA770T rev 1.1 motherboards and can obtain two 6 core chip Phenom II X6 1100T models for virtual machine and multi-tasking work. Chipset is well supported for Linux and Windows and motherboard has ability to be fitted with 16 GB of RAM.
Intel has 6 core, AMD has 6 core, so specific 6 core support in software may come to pass in some virtual machine environment hopefully.
Two machine will meet the need and other machines less focus on multi-tasking and virtual machine can be purchase separately.
I would say thank you for advice and information. It has helped to make a good purchase decision to fit my needs.
I would wish you happy holidays as well.