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#11
As far as I know, the type of VRAM on a graphics card is completely invisible to the motherboard. The only problem I see with GT 710 cards at newegg.com is that GDDR5 cards tend to be considerably more expensive than GDDR3 ones. (I doubt that there's a significant performance gain with GDDR5.)
I worry a little with low-end nVidia cards because of their tendency to re-label old products. However, according to Wikipedia, the GT 710 is a "Kepler" card. The technology is nearly four years old, but it's still supposedly does DirectX 11.1 in hardware. That's not bad. It is also supported by the latest nVidia drivers.