hi all,ive got a asrock motherboard N69C-S UCC AMD AM3 AM2 DDR2 DDR3 maTx,AMD CPU AM2 5200 DUAL CORE ATHLON 64,gigabyte ATI Radeon HD5450 1gb DDR3 Pci-E Dual link dvi-i hdmi Graphic card,MEMORY 2GB 800MHz DDR2 Hynix chip & 1gb 800MHz DDR22 Kingston, how will this setup run playing recent games like CRYSIS, Modern warefare 2 & simler games,or would i be best getting another graphics card, any help would be good

hi all,ive got a asrock motherboard N69C-S UCC AMD AM3 AM2 DDR2 DDR3 maTx,AMD CPU AM2 5200 DUAL CORE ATHLON 64,gigabyte ATI Radeon HD5450 1gb DDR3 Pci-E Dual link dvi-i hdmi Graphic card,MEMORY 2GB 800MHz DDR2 Hynix chip & 1gb 800MHz DDR22 Kingston, how will this setup run playing recent games like CRYSIS, Modern warefare 2 & simler games,or would i be best getting another graphics card, any help would be good