Need a new power supply for my HP a1483w

Hi, I just upgraded my gpu on my HP a1483w to a

But now I am getting alot of screen flickering. I changed my refresh rate on my Dell 1908WFP but it doesn't seem to help. I am thinking it may be the power supply. (If yall have any other ideas just let me know)

But my question is what kind of power supply can I get that can run this new gpu that will also fit into my case. Only thing I have changed in the case is the gpu.

Thanks for the help

a1483w product page
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  1. What power supply do you have at the moment (need to know the make and model and also the wattage).

    Could be display drivers, did you uninstall your old drivers before installing your new card?

    Also did you download the latest drivers from nVidia's website and install them?
  2. Your PC seems to have a standard microATX case, so it's likely an ATX form factor power supply. Check whether the dimensions of your PSU (as seen from the rear of your PC) are 150x86mm (about 5.9 by 3.4 inches) to be sure.

    However, omgitzfatal may be right that it's not necessarily your PSU. Yes, your new graphics card may bring your system dangerously close to max loadings, but check out all other possibilities first.
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