Expreview found leaked details about NVIDIA's upcoming Kepler family. According to the rumors, NVIDIA has three new chips, the GK110, GK104 and GK106.
Click on the thumbnail for the overview.

In spite of such condition, NVIDIA still doesn’t show off their "weapon" to fight back. However, entire NVIDIA Kepler Line-up was revealed by LenZFire, the information covered specifications, price and release day.
As the leaked chart shown, die size of GK110 is 550mm², which is not only bigger than 365mm² of Radeon HD 7970, but also 30mm² larger than its GF110. It’s said that GK110-based GeForce GTX 680 will be up to 45% faster than AMD Radeon HD 7970. As for the price, GTX 680 is set at US$649, US$100 higher than HD 7970.

Nvidia GF110 GPU