(How badly) does this bottleneck?

1N07

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Does this bottleneck? By how much?
MB: Asrock 970 Extreme4
CPU: FX-8350
GPU: GTX770
PSU: Corsair CX600M

There are no big problems and I didn't think this is that bad of a bottleneck, but Thief is all messed up and in just about every game there are downward-FPS-spikes that mostly aren't that bad but still...
 

1N07

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Asrock 970 Extreme4

Sorry, I did intend to include that in my question...
 

1N07

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Damn... How have I missed that...
Well why have I not had problems in any other games? Apart from the occasional FPS-spikes.
I suppose that it's just not ideal, but still works?
 

1N07

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Can the MB damage the CPU? In other words, would it be safe to keep using it until I run in to problems and then get a new MB?
 

1N07

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Any recommendations for a new MB? Something good enough, but not too expensive?
Also, should I do a clean install of windows or can I swap the MB on the fly?
Could I uninstall all the drivers for my current MB and then swap to the new one and install all of its drivers and except it to work?