Suggest me PSU and GPU, to play games like far cry 4, battlefield 4 without lag

[ifarqrafiq]

i'm having

Monitor screen size: 1366x768

Ram: 4gbdd3

Processor: Inter Core i3 3220

Package: Socket 1155 LGA

Max TDP: 55W

Technology: 22nm

Core Voltage: 0.872V

Chipset: Intel Ivy Bridge

Southbridge: Intel Z75

LPCIO: Nuvoton NCT6771

Bios: Brand & Version: Intel Corp. and version is MLZ7510H.86A.0006.2012.0907.1307

GPU: NVIDIA GeForce 9400 GT

Technology: 65nm

Revision: C1

Core: 594 MHz

Memory: 399 MHz

OS: Windows 7 64bit

PSU: 450w 10 amps on the 12v rail

 

[RaDiKaL_]

I'd go with this PSU: SeaSonic M12II 620 Bronze 620W ATX12V

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095&cm_re=seasonic_620-_-17-151-095-_-Product

and this GPU: EVGA GeForce GTX 960 02G-P4-2966-KR 2GB SSC

http://www.newegg.com/Product/Product.aspx?Item=N82E16814487091&cm_re=gtx_960-_-14-487-091-_-Product

You could go with a better GPU, but given your low resolution monitor it's simply pointless, unless you have enough budget for the upgrade.