Graphic card difference

Can any one tell me what the difference is between these two Graphics cards? 
except the price, name and release date... 

ASUS GTX680-DC2-4GD5 

ASUS GTX680-DC2G-4GD5

From what i can tell


DC2  - 

DC2G - 

Source Asus.com

So what is better?

Should i just go for the cheapest?

Get the 8+8 pin if you're looking to overclock it. Having the extra power can give more overclocking headroom. The DC2 can overclock as well, but most likely not as well as the DC2G