Power requirements for PCIe graphics card

I have an MSI RS480M-IL mobo and I want to add a PCIe graphics card. I'm not looking for anything fancy other that trying to get better performance than the integrated video and get a DVI output. Is an external power source required? I don't believe my current power supply has any available power plugs.
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More about power requirements pcie graphics card
  1. Almost anything will be faster than your onboard xpress 200. Depending upon what your doing with the GPU, you could get a low profile card that required no external power.
  2. SV_Bubbles said:
    Almost anything will be faster than your onboard xpress 200. Depending upon what your doing with the GPU, you could get a low profile card that required no external power.


    The card I'm thinking about (MSI N9500GT-MD512/D2 because it's less than $40) says it recommends a 350W PS minimum. I currently only have a 300W in my system. Is it worth just buying the card and trying it out or is this something that can trash my PS or make my system unstable. I do know that my mobo is only pcie 1.0a compliant so I know that the card won't be utilized to its max performance. Perhaps this helps with the power consumption.

    Thoughts?
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