So I just played a game (league) and during moments of lots of action my screen was filled with coloured triangles flashing across the screen so I'm pretty sure my graphics card is going senile. I can play HD videos/youtube and everything else fine so I don't really know what that means, I guess it's half broken.
If I get a new graphics card what do I need to know in terms of component compatibility. I got my pc probably 4 years ago is there a chance a newish graphics card (doesn't have to be that new really) won't be compatible with my older components. I don't even know what it plugs into, would that be my motherboard?
My current card is an ATI Radeon HD 4800
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