I'm planning on getting a GTX card (maybe 660?) this summer to make my first gaming PC. Does Tegra have any effect on the discrete video card market? Because if so, it might be better to just go with a Radeon card this summer =/
Well to be fair he asked if the Tegra could have any effect on the market, not if they were the same product. Perhaps answering the question, instead of assuming he doesn't know the difference between a GPU and CPU would be nice.
There could be a slight impact on the discrete GPU market with the release of the Tegra 4. Due in part to the incompatibility between the Nvidia Shield and the Radeon cards. I would suggest you consider the possibility of using the Nvidia Shield with the Rift and a Gnarly LAN party mini box. This requires a GTX 680 performance or better, and it requires Nvidia GPUs. If the three are a great match it could hypothetically increase demand for the Nvidia product. With the imminent release of the 9K series AMD GPUs the 7-series will be found at an even better deal.
So in a way Nvidia continues to charge more for less, and AMD brings even more value to the table. Like I said Slight.