I will be using the lap for a bit of gaming but the main purpose of the lap would be for designing (photoshop ,illustrator,autocad,indesign etc ). Is there a noticeable difference between the two ?
If you want to run more modern games then you really will need a quadcore especially since it is a laptop. I didn't even realize they made dual core I7s on the mobile side until I went and looked. I know autocad is only single threaded still, but I think indesign can benefit from the cores as well.
Well obviously the quad core has twice as many cores. In programs or games that can utilize the extra cores, you'll get significantly better performance.
If you want to run more modern games then you really will need a quadcore especially since it is a laptop. I didn't even realize they made dual core I7s on the mobile side until I went and looked. I know autocad is only single threaded still, but I think indesign can benefit from the cores as well.
Quad. Since you'l be gaming 4 cores will be better. And as your primary usage is photoshop, autocad (multithreaded). The dual core i7 has 4 threads while quad i7 has 8 threads which is why you should go with the 8 threaded quad i7