Reddit mentions of Sapphire Radeon R9 290X 4GB GDDR5 Dual DVI-D/HDMI/DP PCI-Express Graphics Card (21226-00-40G)

This is the card with all the specs.

Here are timestamps.

I would of course remove the water block and reinstall the stock cooler with new thermal pads and TIM, unless you wanted to buy an aftermarket air cooler for it.

EDIT: Fixed Amazon link

Ah, this is the card I got off amazon, is it a "reference card"?

If you're asking for strictly graphics cards I would go with the minimum of a r9 290x or a [GTX 970] (http://www.amazon.com/EVGA-GeForce-Quieter-Graphics-04G-P4-2974-KR/dp/B00NVODXR4/ref=sr_1_1?s=pc&ie=UTF8&qid=1449824615&sr=1-1&keywords=gtx+970) and these I would say can do 4k but won't be amazing at 4k. They will do amazing at max settings on WWE at 1080 60fps. Not entirely sure about 4k. What I have seen is people use the 980 in SLI for 4K and I'm positive you can do the same with the 290x or the 970 and get the job done as well. And I'm sure one of the GTX 980ti will do just fine. As for processors I myself have an i5-4690k and it gets the job done well. I would say go for an i5-4690k or higher and you can also search for the AMD equivalent as well. I don't have much experience with AMD so I wouldn't know what to recommend

EDIT: Here is a video showing the GTX 980 & i7-4790k running WWE 2K15 at 4K and 60 FPS

Didn't both cards fall victim to price gouging? i.e. this and this. In which case they would be about equal in $/fps overall. However further research shows that indeed for some time the 290x was cheaper, which would probably indeed give it a better $/fps, though again it would depend on when you bought the card. Today, at least on amazon, you can find the 780ti for ~$250 whereas the 290x for ~$350.

I have only recently become a PC enthusiast so feel free to correct my quick google search summary.