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Nops. It only works if you have two cards from the same series. Like two RX460-480s etc.

Also you have to check if your mobo supports CrossFire or SLI.

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TO BE UPGRADED:

>> Headphones << >> Keyboard << >> HDD << >> Mouse << >> PC Case << >> Memory(another stick) << >> Graphics Card << 

 

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You can put them in the same PC, but for what reason? 

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Going to add onto this by saying you can have them both in for multimonitor setup if you don't have an integrated GPU. My PC doesn't have one so I need two video cards just to run 5 screens (immersive gaming). I can also dedicate an entire GPU towards PhysX if the games I play support it.

 

Generally the benefits of a secondary GPU are minimal and mostly aesthetic (visual). Especially mixing AMD/nVidia.

 

So can you? Yes. Is it practical? Not really.

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I've done this before, it's totally possible. You can't actually take advantage of the extra power in games, but you can use it as a second monitor. Also, with DirectX 12, you can use Explicit Multi-Adapter, which lets you use both of your 2 GPUs together to increase performance. Of course, this is a relatively new technology, and won't be widely available in games for quite some time. If you want to do something like cryptocurrency mining however, this will be helpful.

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And a lot more PCs I am not going to individually list (i am a hoarder)

 

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Yes, you can put any cards you want in your pc if it supports it. 

Will only help on stuff that will take agvantage of it. 

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