Dell optiplex 755 minitower compatible video card

I have a dell optiplex 755 minitower and want to know two cards that I can upgrade too. The video graphics card port is small. Any information would be a value.
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  1. According to the specs of your system (found here), you have a PCI-Ex16 slot in your system and a 305 watt power supply. I'd say pretty much any PCI-Ex16 2.0* graphics card that does not require an addition power plug in would probably work for you.

    *note - I'm not sure about the compatibility of PCI-E 2.1 cards with your PCI-E 1.0a motherboard, so I can't recommend those.

    -Wolf sends
  2. Well, I tried to add a PCI-ex16 2.1 and the screen just has annoying blinks. will have to return the card and get a PCIex16 2.0.
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