AMD 6600k CPU with integrated Radeon 8570 - can I use Nvidia?

[wantstomodlol]

I have an AMD 6600k CPU with Radeon 8570 integrated graphics card. I want to run GTA IV but it's not capable of running it in even half decent settings. I bought a "gaming PC" from the_pc_customiser from ebay.co.uk and to be honest its not really a gaming PC its terrible. I want to be able to run GTA IV modded on med-high settings. Am I able to buy a Nvidia graphics card and use this with my CPU?

Thanks in advance

 

[wantstomodlol]

Yes, either a.m.d. or Nvidia pci-E graphics cards will run fine. Guess your eying the gtx750 or 960 for power requirements.

Yeah what would you suggest buying?

 

[wantstomodlol]

Yes, either a.m.d. or Nvidia pci-E graphics cards will run fine. Guess your eying the gtx750 or 960 for power requirements.

What would you recommend buying?

 

[Mitrovah]

You should buy a AMD Raedon series graphics, You can crossfire your apu and discrete card and get even more performance than with Nvidia card. AMD Raedon has mantle which gives you performance boost with games like Battlefield 4.

 

[jerdle]

list the specifications of your PC (including not just power supply wattage, but brand as well), and how much money you have to spend on an upgrade.