Hp Pavilion Dv7 Vs Dv6 Hp Pavilion DV7 Vs Dv6?

Hp Pavilion DV7 vs Dv6? - hp pavilion dv7 vs dv6

Thinking of buying a new laptop, and we have the HP Pavilion. Well, John Lewis, they sell the DV6 pavilion for £ 580, but also in other places that sell Pavilion DV7 for only ten pounds more.

What is the dv7 that DV6. I know that the dv7 is new, but this does not necessarily mean better?
Can someone help me, alone. I wonder about the most important areas ....
RAM
Processor speed
Weight

If there is anything else, please comment on them.

Thanks