Compatible Graphics Card(s)

Hey all.

I have a HP Pavilion P6-2035uk computer. The specifications are as follows :
300W PSU
Intel i3-2120 3.3Ghz (dual core)
HP Cupertino motherboard
Win7 64 Bit version.
Intel HD Graphics.

I want to get a nice card which can run games at 1080p resolutions. I was looking at the Radeon 7750 , GTX 550i and the Radeon 6870. I purchased the 7750 and it won't work on my computer. The fan spins around on the card , but nothing shows up on the screen even if my monitor is plugged into the onboard graphics or the card. My PCI-E slot uses 2.0 format , whereas the 7750 uses 3.0 -- Could this have something to do with it? I'm going to send it back to the shop and get the 6870 but I'm not sure if it will work . Can someone verify it it will?

Many Thanks,

2 answers Last reply
More about compatible graphics card
  1. There is no reason why a Radeon HD 7750 card won't work on your computer. PCIe 3.0 is compatible with PCIe 2.0. Make sure tha you are plugging your video cable into the graphics card outputs and not the motherboard. When you install a discrete graphics card, the onbaord video is disabled. The documentation for the motherbaord clearly states that "Either integrated graphics or the PCI Express x16 slot are usable at one time; they are not usable concurrently." Check your specs here:

    Have you downloaded and installed the graphics driver for the Radeon HD 7750 from ? The problem could be your power supply. 300W is pretty slim for using discrete graphics. AMD reccomends using a 400W or greater PSU with the 7750.

    As far as using a Radeon HD 6870, yes, you can use it but the 6870 requires two 6 pin PCIe auxilliary power connectors so you may have to upgrade your power supply to use one. The 300W PSU that you have will not be enough even if it did have the PCIe power cables (which it doesn't). However, the 6870 is a much faster video card than the 7750. Check out this: and

    I would recommend that you replace the PSU before anything. Something like a Corsair Builder series 500W or a Seasonic M12II 520W would do the job and give you the flexibility to use a better graphics card.
  2. Sorry.

    I didn't add that we tried a 600w PSU with the card plugged in!
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