GT 630 VS Radeon 6670?

[Plasmio]

I'm planning on building my second computer. It's not going to be as powerful as my first, I want it to lean towards general use with some light gaming like Minecraft (I like having several computers at my disposal; I guess I'm just odd). I don't wanna spend more than 65-70$ on this rig's GFX card, so between the GT 630, and the Radeon 6670, which has more horsepower overall? By the looks of it, the 6670 has the upper hand: http://gpuboss.com/gpus/GeForce-GT-630-vs-GIGABYTE-Radeon-HD-6670

 

[ASHISH65]

hd 6670 way is faster than gt 630

 

[Plasmio]

I thought so. How does it compare to a GT 640?