1. Reconfiguring the build so it better fits the argument you wanna makes the information irrelevant to the choice here.
2. We do not have a 4k system here; I would have given alternate advice and recommended the 290x if that was the choice being presented..
3. Looking at the image above, the 780's 133.6 and the 290x is 129.8 .... how is that translate into "beating or on par" especially when that game is well known to favor AMD ?
4. In the video review I posted, where did you see the 290x "beating or on par with" the 780 ?
Crysis 3 - 780 wins by 11.5%
Bioshock Infinite - 780 wins by 3.8%
Far Cry 3 - 780 wins by 5.3%
TombRaider - 780 wins by 5.9%
Star Citizen - 780 wins by 23.2%
BF4 - 780 wins by 2.9% in a game known to very much favor AMD
The 780 accomplished a "sweep" with an average 8.8% advantage
5. All R9 series cards combined (7 cards total) amount to just 0.52% of the market. The 780 Ti alone has 0.47 % . So if the 290x / 290 has an advantage, the buying public appears not to be convinced. Since March, the 780 and 780 Ti have increased market share by 0.34% all R9 series combine managed only 0.21%
http://store.steampowered.com/hwsurvey/videocard/
6. Again, why is multi monitors or 4k in the discussion when neither is part of the system in question.
7. Again, show me where 4 GB shows an improvement over even 2 GB at 1920 x 1080
http://alienbabeltech.com/main/gtx-770-4gb-vs-2gb-tested/3/
Pay specific attention to the part about being able to use more than 2Gb does NOT result in a performance increase when 4 GB is present.
when we replaced the 4GB GTX 770 with the 2GB version ..... there were no slowdowns, stuttering, nor any performance differences that we could find between the two GTX 770s.
8. The best* 780 is the one recommended at $450 so why is the price of anything else significant ? Given the choice between the recommended card and a poorer performing that cost more, how many would pay more to get less ?
In BF4, an AMD favoring game, the MSI 780 beats the Sapphire Vapor X 290x by 6.4% as shown in the image above and it is $110 cheaper.
9. The best* 780 Ti is the MSI 780 Ti which has been $600 every other week on newegg for 14 weeks, so why would a lesser more costly card be under consideration ?
In BF4, an AMD favoring game, the MSI 780 Ti beats the Sapphire Vapor X 290x by 22.1% as shown in the image above and yet it is only 16% more expensive (this week ...).
* Outside the Lightning, Classified
Yes, I agree the 290/290x are fine choices at 4k res or anything above 2560 x 1600 but at 2560 x 1600 and below, the numbers are the numbers and they favor nVidia in this segment.
Still, this will all go out the window next month as when the 880 drops, prices will see a major reshuffle so I wouldn't buy anything now.