V is for Voltage and DDR is for...
Though I am confused by this, why DRAM Voltage and VDDR? Similar to CPU PLL?
I googled ''What is VDDR'', this is what I found: http://forums.overclockers.co.uk/showthread.php?p=22754642.
I reckon it's voltage for the memory controller but who knows...
LOLOLOLOL, so lame, I want to know what it does...