Will my Overclocked AMD FX-8320 bottleneck GTX 1070?

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Solution
Dude, seriously. Go do research on Intel vs. AMD. I'm an AMD fanboy and even I know when to quit, and it's been time to quit for the last few years.

I would also take into account that Zen is dropping Q4 this year, so don't forget that as well. Intel might not be the go-to route for much longer, but that entirely depends on if Zen flops or not. But yes, wait and see would definitely be the way to go. If you're up for the 1070 pricing, do it. It'll be a great GPU.
Overclocking certainly does help, especially on AMD chips. You can overclock them fairly easily and they get high overclocks, as long as you have a halfway-decent aftermarket cooler (for all of like $30-40). I'm also not so sure how well threaded Arma 3 is, but either way the i5 isn't a bad idea.
 
I have bought MSI 1070 GTX despite everyone saying that it will bottleneck my FX 8320.

IT DOES NOT.

I have tested it on Witcher 3, Doom, Rise of the Tomb Raider, Grim Dawn, Overwatch and every game works perfectly without any bottlenecks. I am playing in HD, full / ultra / uber details in every game and I am getting constant 60 FPS.

Below is a graph (yeah, I use this one) of how much the CPU and GPU is used while playing Witcher 3

https://scontent.fwaw3-1.fna.fbcdn.net/v/t34.0-12/13578951_2062295023994979_1187346706_n.png?oh=5ed8f7e38a3070d8c7a8f8154e0d91e0&oe=577E1F74

My whole PC looks like this:

ASUS Sabertooth 990FX R2.0
AMD FX 8320
Patriot Viper 3 DDR3 2x4GB 1866MHz CL9
MSI 1070 GTX

So I am extremely happy with the GPU myself! :)
 


I am looking to get an ASUS Strix GTX 1070 for my rig. FX-8320 OC'd to 4.0 GHz with a Corsair H60 water cooler that does wonders well so far (just gotta keep the vent in the back and the fan clean). Also got 24GB DDR3 at 1600 MHz currently. I mean to get the video card here and a Samsung 850 Pro or Evo depending on the price come the holidays. Tempted as I am to jump to an FX-9590 in the future when they are cheaper, I feel like I don't need much more in processor power for gaming since the best I'd do is 1080p, 60fps on Ultra settings. I also am waiting for the eventuality of getting a 20-something inch HDTV that can do 1080p and sharpen things up.
 
I'm surprised this wasn't mentioned earlier... but yes any AM3+ CPU will bottleneck on pretty much any new GPU, the reasoning is simple, i've struggled with it for years, mostly because AMD is stubborn and refused to make the move to PCIe 3.0 they recently did with their FM2/2+ APU's but its like, several years too late right?

Intel has had 3.0 for a long time, and they will not bottleneck, I'm only an AMD guy cuz i'm poor, but if i could, i'd have an i7 nearly instantly... that extra bandwidth on PCIe 3.0 is just something of a wet dream, using the same GPU everyone else has, with an AMD will be roughly 20% weaker, which is like an 80fps difference.

Yeah i know slight necro, but i'm shocked it wasn't mentioned before... blatant fact is, AMD kinda sucks when it comes to discrete powerful GPU's, lower end will be better used than the newer higher ends, like i notice, my two 6970's perform the same as my single ASUS R9 380 DC2OC my roommate has an APU build with an RX-480 and its a night and day difference, even with a card swap, i have 8 cores at 4ghz, he has four at 3.5ghz, and either card in his perform better than either card in mine... he has 16GB of DDR3-1600 i have 16GB of DDR3-2133, doesn't seem to matter, if it isn't PCIe 3.0, it ain't going anywhere.