New Gaming/3D Design Pc build

Primary use:- 3D-Modeling, Animation, Render ( Autodesk Maya 2011, Combustion, Cinema 4D, 3Ds Max etc )
Adobe Creative Suite 5 ( Premire Pro, After Effects, Photoshop, Illustrator etc )
ie mainly used for 3d works and vfx.

Secondary Use:- Gaming- would like to play games like Battlefield 3, Skyrim and most of the new games at Medium to High settings. May be played in HD.

Overclocking :- Maybe, Maybe not. i dont really know how to OC. But if playing new games on the above settings need overclocking, i'll do it for sure. Also, if overclocking speeds of 3d and vfx rendering process, then i'll do it for sure.

Currently im looking into two build lists, which is fixed and will not change. So, you must help me to choose the build that suites best for me.

List One :-
Intel core i5 2500k (Second Generation) Base Speed 3.3 Ghz
Nvidia Geforce GTX 560 ( Non-Ti )
P67 Motherbord
8 GB (4GB X 2) 1600 Mhz Ram
500 GB HDD
600 watts PSU.

List Two :-
Intel core i5 3450 ( Third Generation ) Base Speed 3.1 Ghz
Nvidia Geforce GTX 560 ( Non-Ti )
H77 Motherbord
8 GB (4GB X 2) 1600 Mhz Ram
500 GB HDD
600 watts PSU.


Notes :- Graphic Card :- Radeon HD 6850 's Cost is lesser than that of GTX 560 Non-Ti's. So if 6850 outperforms 560 even by 1 %, i'll consider buying radeon over nvidia.

Case :- Two Cases are in my list. Corsair Carbide 400 R and CoolerMaster Elite 431 Plus.
please tell which of these will match my needs.

So in overall, will 3rd gen beat the 2nd gen.? Please answer my question ASAP. Thank You.