Why would that be the influence to your choice? the 290x is slower in most gaming regards than the 780ti, and with the price increase in the 290x, it is less of a premium priced product.
the 290x is indeed a blazing fast card, but this speed comes at great cost to heat. This is the hottest running card on the market, and is equally as bad in the temp aspect as the gtx 480 was. It needs a custom cooler to be acceptable, as the stock cooler would cause thermal throttleing after about a half hour of gaming if you don't have the fans maxed.
this brings us to the next point. The stock cooler on the 290x is actually measured as louder than an average hairdryer at max fan speed, and about as loud as a free standing fan on it's max speed when the 290x is at 55% fan speed. 55% fan speed will cause thermal throttling after a certain amount of time as the card can and without superb airflow in the case, will hit it's 95 degree temp limit and then throttle down.
now all that above is basically the reason not to go with the stock cooler right? well sure. Now, think about the extra heat thrown into your case with an aftermarket cooler on the card. For many people this is actually causing problems with cpu temps (especially people who liked to overclock). well yeah you can fix this by having your 290x water cooled. but wait, this adds another $100 to the price tag for minimal performance increases due to the low overclockability of some of the 290x's.
At the current price of over $600, it is indeed the fastest card before going to the 780ti at $700, but throws out a lot more heat (power consumption is actually not that outrageous on the 290x though and can match the 780ti in that respect). It is the fact that the 290x is over $100 more expensive than it's original launch price that makes it no longer the best deal in my opinion. There are some after market 780's that when overclocked, can actually match and beat the 290x in some games AT 1080p (the 290x is simply better at higher resolutions than the 780, end of story, if you are playing at 1440p or higher you will get better performance from a 290x, though not by a huge margin after overclocking).
Now take into the fact that the 780 is roughly the price the 290x was at launch, and you could say that at launch, the 290x was indeed a better deal for price vs performance.
After the price increase, i personally no longer feel this to be true based on multiple review sites testing both nvidia and amd cards.
basically i am highly opposed to HOW you are deciding which card you are happy with. My status is much more in depth than it seems (property of a psych major with a business minor). You need to do your own research. remember that the guy above may have picked the 290x because he couldnt afford the 780ti, OR because he simply has used amd before, and has had a good experience with them. These are both fine reasons for HIM to choose which he would be happier with, but it is worrying that you would decide what is best for you based on just him picking one card over another with no in depth research into why he chose the particular card he did.
Do some research and make some opinions of your own rather than following the words of others like a lost puppy (sorry if this seems insulting, but the same was said to me a long time ago, and i feel it has been very helpful, not only in choosing pc hardware, but just as a general life practice)
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