I found this posted over at Legit Reviews, a very interesting read.

"Is there a fatal hardware flaw in all NVIDIA Kepler GTX 670/680/690 graphics cards? There has been conflicting news coming from TSMC and NVIDIA about this today. A leak from TSMC, manufacturer of the Kepler GPU, that "chips may be suffering from serious performance degradation over long periods of heavy load", therefore, NVIDIA may be recalling all of their Kepler cards due to this issue. "

I would love to post up the whole thing but its best if you read the rest that they posted. I would love to hear everyones feedback on this as well.

legitreviews.com/news/13188/

*Edit*
I am removing this rumor from the home page, we typically don't post rumors as news. But keeping it on the forums for discussion.

Interesting development. We will keep you guys up to date with anything else that we hear. Hopefully this doesn't end up being true, I am running the GTX 680 in my own PC.

I should also point out that I doubt this is actually true, I just thought you guys might find it an interesting read

Interesting

Byron Del Rizzo ( nvidia) denied it like 15 minutes after it was posted lol

Here's the whole story based upon your link

Correction: An earlier version of this article incorrectly reported this situation. We would like to apologize to NVIDIA and any of our readers that were mislead or misinformed. Below is the updated news post.


Is there a fatal hardware flaw in all NVIDIA GeForce GTX 670/680/690 'Kepler' graphics cards? There have been rumors coming from various sites today that something might be going on. A site called pnosker.com says they have have information from from TSMC that says the "chips may be suffering from serious performance degradation over long periods of heavy load", therefore, NVIDIA may be recalling all of their Kepler cards due to this issue.

We have never heard of Patrick Nosker or pnosker.com before and this story sounds a bit off as how would he be getting inside information before larger publications? The site later reports that this is their first time ever citing a source and that they don't even have an NVIDIA GeForce GTX 680 graphics card. It doesn't sound like this source has any merit. We have NVIDIA GeForce GTX 690, GTX 680 and GTX 670 video cards here running on our test machines 24/7 for longer than a month and have had no failures.

NVIDIA was asked if they were having any Kepler issues and they denied that they will be recalling any cards over a hardware issue. NVIDIA's Bryan Del Rizzo stated that "There is no truth to this". Case closed