Upgrade CPU or GPU first

I'm at a dilemma. I currently have:
i5 750 CPU
Nvidia GTX 560ti
Biostar TH55B HD ( PCI-E 2.0)

Should I upgrade my first mobo/cpu to get 3.0 support, then upgrade my GPU next year? I'm curious to which will get me more performance. If I get a GTX 660 or 680 will that last me 2 or 3 years? I'd hate to buy a 200-300 dollar card then have to get a new one a year later. Currently, I'm getting lag spikes from low frames on BF4 on max settings. Though it only happens with massive environmental destruction is happening.
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More about upgrade cpu gpu
  1. I would get a better card first. minimum GTX760
  2. rolli59 said:
    I would get a better card first. minimum GTX760

    Can I get a 760 with a PICE 2.0? I don't have 3.0
  3. Best answer
    The PCIe std is backwards compatible and the even the most powerful cards hardly get bottlenecked on 2.0, here example HD7970 and GTX 680
  4. Yes, most cards do not take advantage of the 3.0 anyways. If there is a slight disadvantage, it will be very little.
  5. Oh wow, had no idea they were backwards compatible. Yeah, might just get the GTX 760 if there isn't a huge difference from 2.0 to 3.0. 780 is a little too pricey for me. Thanks a lot, good information to know.
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