andrewcarr

Distinguished
Sorry to disappoint but the i7 is a major improvement. I have that CPU in my Lenovo Y570 and it's quite good. It will be much better for rendering.

Now for the downside of the i7, it is worse at gaming (but only silghtly).
630m- http://www.notebookcheck.net/NVIDIA-GeForce-GT-630M.63761.0.html
7670m- http://www.notebookcheck.net/AMD-Radeon-HD-7670M.69483.0.html

But the processor difference is quite big.
A6-3420M- http://www.notebookcheck.net/AMD-A-Series-A6-3420M-Notebook-Processor.61302.0.html
i7 2670QM- http://www.notebookcheck.net/Intel-Core-i7-2670QM-Notebook-Processor.60135.0.html

So I'd still go for the Intel i7 laptop.