i have dual athlon mp2200+ w/tyan s2460 mobo, with a msi geforce 4 ti 4200 w/ 128 mb ram, ide 66 controller card, creative mpeg dxr3 encoder, creative ensonique sound card, nic, 6 hard drives 7200 rpm, liteon burner, and creative 8x dvd rom, 512 mb pc2100 ram, do u think my 400 watts power...