Issacbishopman :
A amd fx-8350 8 cores processor, or a i5 -4670k quad core. What do u guys think, is there a huge difference in performances that makes the price jump worth it?
The i5 will be superior. Most games utilize up to 2 cores. A few that use more are (but not limited to): Crysis 3, Battlefield 4, Watch Dogs. In those games, the FX-8350 will be good. That's not to count the i5 out. The i5 will still play them better than the FX. The major problem with the FX line is that AMD left it to focus on their APU line so FX is dead. There is no direct upgrade to the FX-8350 as of now.
Issacbishopman :
So if I get the i5 u suggested what motherboard would I need, and if I get the 8350 will I still be getting good frames, and would it fit in a fm2 motherboard?
Gigabyte GA-Z97X-Gaming 3 for the i5-4670K. For the overclocking, you will need an aftermarket CPU cooler.
Asus M5A99FX Pro R2.0 for the FX-8350. Again, for overclocking, you will need an aftermarket CPU cooler.
The cooler depends on how high you plan to overclock. For an average overclock, a Cooler Master Hyper 212 Plus or 212 EVO will suffice. The Plus is usually $10 cheaper and will only be 1-2C lower than the EVO. For high overclocks, either a Noctua NH-D15, Phanteks PH-TC14PE, or Corsair H100i. For the AIO coolers (like the Corsair H100i) that I mentioned, you do want to make sure your case can support the radiator. For extreme overclocking, go with a water loop setup. That will be very expensive to buy all the parts.
Issacbishopman :
N my graphics card says it takes a PCI express 3.0. Would that matter if my motherboard says PCI express 3.0 by 16
x16 is just the bandwidth of the lane. Currently, no GPU out there will saturate a PCIe 2.0 x16 lane, so you'll be fine even if you install it on a PCIe 3.0 x8 lane. Heck, even PCIe 3.0 x4 is fine for your card.