I finally have the budget to buy a card that will be capable of keeping my rig in the game for a while longer.
It seems that the card that best suits my interests in terms of budget and performance is the GTX 780, which would be replacing my HD 6850.
However, I'm still running an old Q8400, which is slightly weaker than an i5, perhaps on par with an i5 if overclocked properly. While I won't pretend to understand CPU-GPU relations, what I do know is that having a really old CPU and a really new GPU may cause the GPU's performance to be hampered.
The question is, will my Q8400 bottleneck a GTX 780 if I were to install one? If it will, what's the cheapest CPU that won't bottleneck it?
On a slightly different note - if I install a GTX 780 and it does end up being bottlenecked by my Q8400, would it still be able to handle Watch Dogs on higher settings?