If you want gaming, the screen can't be too small, details can't
be seen. If it's for general uses, well, it's up to you to decide.
Considering that it's a tablet, its power saving feature may
attract you, especially if you are on the move all the time. This
will be a critical factor. If you aren't, I will recommend sticking
to the current one that you have.
When playing games, it will most probably lag. Not due to lack of
RAM, but the processor's speed.