Hi Journer,
yes, generally with the 5000V chipset, you can run "up to two" CPUs.
I tried to look into the Gigabyte board's manual--no mention of running only one CPU there.
However, in an equivalent Supermicro board, they did mention running just one CPU.
However, if you need a server board, and don't need two CPUs, which need a lot more power, give off more heat, noise, etc, then maybe a Quad Core CPU might be better? All depends on your applications/server needs, but, even two dual core Xeons in a lot of computing power.
Also, bear in mind that the 5000 series chipset requires FB-DIMM memory--good in that it is ECC and fully buffered, but, more expensive, puts off a lot of heat, etc....
Single socket server quality boards:
http://www.newegg.com/Product/...2100%2CN82E16813151060
Quad core, ECC ram, RAID 1 or 5 hard drives, good backup system should handle a lot of servage....
HTH
NXIL