Only with low level APIs like Mantle and DX12 can developers actually use architecture specific enhancements.
Why do I even bother? So all those times in the past where ATI cards or NV cards ran faster in DX7/8/9.1/10/11, it was all just a random fluke and nothing to do with architecture specific optimizations made by ATI/NV's driver teams. All those GE/GW titles where AMD/NV tried to get better performance for specific features like Global Illumination, SSAA via DirectCompute, HBAO+, PCSS+, all done in DX11 had nothing to do with catering to specific architectures of the said brands'? R9 290X pulling away from Kepler and closing in on Maxwell but Kepler falling further behind Maxwell simultaneously - all of that is just a random fluke and has nothing to do with drivers from AMD/NV?
Also, when console ports come to the PC and they were made to cater to GCN architecture, the x86 code in DX11 does not translate at all into any advantage for AMD's GCN hardware? Got it. I learned a lot today.
Your CPU argument is going nowhere because HardOCP has already tested 290X CF vs. 970 SLI and against 980 SLI for real world gameplay smoothness at 1440P and above.
Also, how do you keep missing the part about OC i5/i7 systems a lot of us have, but yet you use a stock i5 2600K 3.4Ghz as an example to prove your point of CPU bottlenecks. Jeez.
Like I said even in AC Unity you had to run FXAA on 970 SLI, so the last thing anyone needs to worry about with 295X2/970SLI or faster is CPU bottlenecks in modern games at 1440P and above on a 4.4Ghz+ Core i5/i7 system. We even have users here with 980 SLI max overclocked who report almost 0% increase in performance going from 4.0Ghz 5960X to a 4.4Ghz 5960X in games. This is not some coincidence but because most games are GPU limited today.
It's remarkable you keep claiming CPU bottlenecks and AMD's horrible DX11 driver overhead but after countless games tested 290X is now faster than GTX970 at higher resolutions, and the same for 295X2 vs. 970 SLI.
As many have repeated, what is the purpose of your thread? Do you want people to help you pick the best 970/980 cards or do you intend to keep creating flame wars about NV/AMD in your thread? It doesn't seem like you are at all asking people to really help you pick fairly between 970 SLI / 980 SLI or a single 980 as a stop-gap. There should be NO discussion about AMD at all since everyone on our forum knows you are not interested in AMD products. So why do you keep talking about them in your own thread!?