Equlizer

Mate watch this video, it'll help you rest:
 

No.
Sell it and buy a better single GPU.

Like I said it isn't a throttle. Its how the states are. If it was a thermal throttle it would be very clear. The entire 10 series does it.

Jesus Christ this thread is a cess pool of... well what cess pools are usually full of
 
A 1080 Ti is much more expensive than another 1070, so don't bother suggesting that unless you're going to pay OP to have it yourself.
 
SLI allows you to link two graphics cards together and they each then take turns to render a frame in your games. It allows you to increase framerate, or improve graphics settings to get the same framerate. Or somewhere in between.
 
SLI is supported by... pretty much everything. There are a few examples of games that don't utilise it, or don't utilise it very well but I can count the games I've played that haven't on one hand in the last 6 years of using it.
 
I use MSI Afterburner to OC them. You can overclock them separate, but the default is to OC together. AFAIK OCing them separately will lock them together at the lowest OC when you're in-game anyway.
 
"Slippery slope" is a fallacy when it does make contextual sense... did you mean a different phrase? What does SLI lead to, murder?
 
And that thing about being reset in driver updates hasn't been true for a couple of years.
 
See this is why there's so much bullshit spread around about SLI. People tried it like 8 years ago and assume it's the same now as it was then.

Why not inbetween?
1440p / 144 Hz.
 
Sweetspot in sharpness, Refresh rate, and Performance needed to push the pixels.
 
However i would not get the Zowie. Take one with either Freesync (if you use AMD) or G-Sync (if you use Nvidia). No point in getting a Gaming Monitor without Freesync or GSync.
 
And your hardware would be interesting to know. If you don't have at least a GTX 1080 (better titan X), you can pretty much forget 4k Gaming.  Even the 1080 will struggle sometime pretty hard in 4k, leaving you at 30-35 fps on Ultra settings.

There has been so much talk about this, it's nice to see some sarcasm once in a while.

just upgrade to a fx 8350.

if you want 1440p 144hz or 4k 60  you are going to need sli 1080 or 1080ti. 

Maxtor 40MB.  Yes megabyte.  Along with a cga monitor (4 colors).  I'm so ashamed

Play with the curve and see what you like, thats the only way bro no shortcuts here.

G-sync helps too

There are no issues with SLI. No stuttering. 
 
I run 2 980ti every day.

the +

get the 1440p, it offers a crisper image and that monitor has gsync and 165hz, similar to my monitor only mine is 144hz, i noticed a massive improvement

@H4X3R
@Godlygamer23
@faziten
 
Update!
 
I figured it out. The difference in 144hz and 60hz is night and day. The problem was my game was on Windowed Borderless and for what ever reason it wouldn't go down to 60hz. So all the tests that i did were infact 144hz. Not one was 60hz. The difference is night and day I will never be happy with 60hz again. I can finally be content with my purchase!

OP i might clarify some things after reading some of your answers. 
 
Games do bottleneck in different ways (and it's not always game developer fault).
1) Far Cry 3, 4, and primal will abuse one particular thread pegging it at 100% if you have something beefier than a 970/480. This is a CPU bottleneck, yes but is induced by a poorly optimized game. (which relies on a game engine from the DX10 era). 
2) Crysis 3 in Welcome to the jungle map, will use up to 16 threads, but when you pair an i5 with something higher than 970/480 the i5 will be 100% usage. This is because sadly, shadows cant be GPU processed in that game, and every grass fiber on that map has it's own shadow... guess what: Shadows are mostly CPU related hence the CPU bottleneck. Yet again this is a game engine related bottleneck. Similar from the previous one, but here, the cpu is being used to the max, nothing to do about. 
3) Early Assasin Creed Unity had an API bottleneck. The increased amount of polygons in certain moments of the scene would yield a drawcalls bottleneck in DX11 API that (just like first case) is single threaded. Hence every CPU suffered, the less clock it had the worst. But there also were other parts of the game where a lot of NPCs were in the same place and it tanked every known CPU at that time. That is a different bottleneck within the game... AI is a CPU related thing, many NPC equals many A.I calcs to perform, here a multiple core cpu would faint less than a less powerful one, even with the API bottleneck in place. You can see every Assassin creed suffering in i5's since Unity because of this. (high NPC counts). 
4) Rise of the Tomb Raider early versions, showed an i3 + AMD gpu being a clear bottleneck while the same i3+Nvidia performed much better. (Digital Foundry), that was because AMD driver for DX11 titles is single threaded reliant while NV driver is mulithereaded. This was a GPU Driver bottleneck that happened until some patches fixed this issue. 
 
It has nothing to do with your CPU being weak or old or whatever. It's a developer decision, game design and API, Driver issue that is oblivious to the CPU installed.
That's why you will hear people say "an 5820K bottlenecks a 1080" while others say "my i5 does not bottleneck a gazillion 1080 in SLI". They can be all true in their respective game and scenario, but not universally valid for every game in every possible map. May sound trivial buy it's not. It generates a lot of confusion. To compare bottleneck scenarios you must use a fixed testing procedure. An i5 may not bottleneck a 1080 SLI in 4K but will bottleneck the hell out a 1080 in 1080p in games like GTA5. Same hardware, same game but different resolutions change the chocking point from GPU to CPU. 
 
Sadly, jumping between a 970 to a 1070 with an i5 won't be enough in GTA5, since like Crysis 3 can and will use all it's available juice, it's even more noticeable in Grassy areas like Vinewood, you could lesser the CPU impact activating GPU SoftShadows but this will impact on your GPU hard since it's not only a GPU algorithm but it's also more taxing than CPU ones.
 
What you can do in this particular game? 
1) Overclock CPU (watch temperatures).
2) Get the fastest ram Available (the reason why is related to a Digital Foundry video i could link if needed)
3) Get an i7 for your platform. (4790K +OC) 
 
This is a tiny bit more precise approach to why is your CPU bottlenecking a 1070 here and nowhere else.
It's easy to call "this XXX CPU will bottleneck YYY GPU" or "ZZZ Game is garbage optimization wise" blah, blah, blah. But the technical reality is a bit more complicated than "an i5 is enough for gaming" or "1080 is overkill for 1080p" like you will hear plenty times. 
 
Take general approaches to problem resolution as guidelines and remember there are a lot of settings to mess with so you get better performance without too much of a visual impact. 
 
Lastly: 
Bottleneck will always exist by definition. Since you wont be able to find a particular game that can make use of exactly 100% and 100% of your GPU and CPU at the same time. Since games have different performance needs across the whole title. 
 
Cheers!

With a quality power supply you can never have "too much" power but you can have "not enough"

Not this bs again...

The 980ti is still an excellent card to own, if you can buy one for half a 1070, why not.

Not with gsync 
and of ur dropping his much on cards with no gsync ur a plonka

You can do it. Make two separate 250GB partitions of the new M.2 SSD, then clone one SSD to one of the partitions, and the other SSD to the other partition.

This sounds like the classic case of a failed overclock and your card is restricting your gpu.  This is normal,  my 980 does it quite often when I'm playing around with OC. 

RX 480
 

that won't bottleneck the 1070.  Buy a 1070, plug it in, and you're good to go.

G-SYNC, that is the answer.