Want to upgrade my computer for this game, need some advice.

[Krindor]

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If you provide me with a benchmark showing the bottleneck of the CPU in this game and that the CPU upgrade would be better I'll agree to your statement but as long as the only thing you say is that it isn't enough I'm still going to say that the GPU is going to be the better upgrade. I'm not saying that the bottleneck is non existant only that it isn't as extreme.

And to the enjoyment part it is definitely going to affect it if the FPS is too low, for me the game just feels sluggish.

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My experience on lagging plumes in titan was from a laptop with 750m, with shadows at medium or max the plumes would cause the game to lag really badly.

If you tried it on the FX 8350 would you still say that the overall perfromance of the game wouldn't be better with a better GPU? Also the OP asked for the computer to be able to run it on max. The 660 isn't going to make it with max settings.