__________________
AMD Phenom II X4 955 BE, Asus M4N98TD EVO, 2x2 GB G.Skill @ 1600MHz, MSI GTX 560Ti Hawk, 500GB Western Digital Black SATA-II, Dell Ultrasharp U2311H, CM 690, Corsair VX550
^^ no worry. it'll support. total power consumption will be around ~250W. even if CX400W offers 350W (in worst case), theres a 100W gap to reach deadline.
Now....two contradictory opinions..I dont have much budget to afford VX450 ...My budget is around Rs 2.7k). I guess it can handle GTS 450 since CX400 can easily handle HD 5770. GTS 450 and HD 5770 require almost the same power requirements.....
Depending on the overall config, a CX400 maybe considered as a tight-budget version of the VX450 if one may say so.
It should be able to handle a GTS 450/HD5770 along with the rest of the components you mentioned.