Dell inspiron 15r vs 15r se

[cool_coder]

hello people,
i want to buy a laptop which can run 3D graphics for CAD software pretty easily.
i also will be playing moderate level games like NFS, which i suppose are not very intense on graphics. i have rounded down to dell inspiron 15r & 15r se.
15r has 7670m 1GB while 15r se has 7730m 2GB. i am a bit confused as to which 1 of these will suffice my needs.

my preferences are :
1. play hd movies without any problem
2. run CAD software without any lagging
3. play moderate games like NFS with max possible resolution without lagging.
4. battery efficient

please note that both laptops have same processor 3rd gen i5 3210.
the 15r se is costlier by about $100.
there is also a difference between wireless cards but i cannot exactly understand the difference. so can you please tell me which laptop is best for my requirements?
here are the tech specs :
15r se
http/www.dell.com/in/p/inspiron-15r-se-7520/pd.aspx?c=in&cs=indhs1&l=en&s=dhs&~ck=mn

15r
http/www.dell.com/in/p/inspiron-15r-5520/pd.aspx?c=in&cs=indhs1&l=en&s=dhs&~ck=mn

please help me as i know that there are people with high knowledge about these things on this forum.

 

[Alabalcho]

If you want to work with CAD, get a laptop with real HD screen(1920x1080). Neither one of the laptops you've shown has this as an option, so I would look for another model / brand.

 

[cool_coder]

If you want to work with CAD, get a laptop with real HD screen(1920x1080). Neither one of the laptops you've shown has this as an option, so I would look for another model / brand.

but price is also a constraint
& CAD software dont require to be viewed with that much resolution
this is not photo editing hence i dont need that much clearity.

thank you for replying