Aliasing and jagged edges nvidia gtx 960 4 GB

Hello everybody. I have recently bough a new graphic card msi nvidia gtx 960 4 gb and i’m experiencing bad aliasing issue becouse i see edges as jagged and fragmented lines. I have never had this issue before with my radeon hd 7850 2 gb. My screen resolution is 1680 x 1050. In nvidia control panel, i have turned on antialiasing but it’s like it’s not working. Could you help me to solve this issue? I post some screenshot of the problem and my settings both for blender and nvidia and my system configuration:

-MOTHERBOARD: ASROCK A790 GXH/128M
-GRAPHIC CARD: MSI NVIDIA GTX 960 4 GB
-CPU: AMD Phenom II X4 940 4x512KB (3GHz) 125W AM2+ Box Black Edition
-RAM OCZ DDR2 800Mhz PC2-6400 REAPER 4GB KIT 2x2GB (OCZ2RPR800C44GK) (8 GIGA RAM IN TOTALE)
-RAM OCZ DDR2 800Mhz PC2-6400 REAPER 4GB KIT 2x2GB (OCZ2RPR800C44GK)
-HARD DISK: 2 X WESTERN DIGITAL CAVIAR R3 320GB 16MB WD3202ABYS
-POWER SUPPLY: CORSAIR 650W TX
-S.O.: WINDOWS VISTA ULTIMATE 64 BIT

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