Should i upgrade my Desktop's PSU ?

I've been gaming on XFX Geforce 8400 GS on my Vista PC having PSU of just 300 watts. I have had no problems till now(6 months on vista).
Should i continue with this same PSU (Lenovo's Default PSU) ?

If in future i have to upgrade my Graphics card (Probably to Geforce 9 Series) then would i have to upgrade my PSU ?
If Yes then, Is the Motherboard came in Lenovo PC upgradable to a higher Wattage PSU ?

My pc config:-
Intel Pentium 4 3.06 Ghz HT
80 gb hard disk
2 Gb dual channel ddr2 ram
XFX Geforce 8400 GS 256 MB
300W PSU
Intel 945 chipset
Windows Vista ultimate SP1
4 answers Last reply
More about should upgrade desktop
  1. Not specific enough on the mobo. Use this to get the model:

    or cpuz.

    What exactly are the problems?
  2. What games at what resolution? Without knowing that, we can't help.
  3. If it ain't broke, don't fix it.
    At least not untill you upgrade your system.
    Then definatly get a qualitly PSU.
    Make sure not to get one of the really cheap ones as they love to fry.
    Corsair, PCP&C, Enermax, Silverstone and the Antec Earthwatts line are good choices.
  4. Ans to auscanzukus's Question :
    I used cpuid pcwizard , but it shows the Motherboard model as: To be filled by O.E.M. I think its showing this message since it's a Lenovo PC.

    Ans to runswindows95's question :
    I want to play games like Fifa 2008, NFS Pro Street, Grand Theft Auto IV at a resolution of 1280 X 1024 .
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