500watt should definitely handle what you have listed above. rule of thumb is to never trust power supplies that come with the case, but my friend uses one right now and it has yet to fail him. i've never heard of okia, but for now it should be ok as a temp psu, but i would look into a better psu from a more reliable company as your next priority upgrade. usually if a psu is bad, the psu itself will stop working, and the damage will stop there. of course there are rare occasions where your hard ware will get fried, but this is very minimal. just use a surge protector with computer, and it should be fine.
| AMD 3800+ X2 Dual Core Processor | ASUS A8N-e nF4 Ultra | Hitachi Deskstar 250gb 3.0 gb/s | 1gb Corsair Value RAM 2x512 | eVGA geforce 6800GS | sound blaster live! 24-bit | NZXT Trinity Classic chassis | OCZ GameXStream OCZ700GXSSLI PSU |
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