First up is the GeForce GTX 780, this card is the "GeForce GTX Titan LE". Based on a cut-down GK110 GPU, this model seems like a consumer version of the Tesla K20C, with 2496 CUDA cores and 5GB GDDR5 memory. Performance is said to be around 30 percent faster than a GeForce GTX 780, with pricing likely in the vicinity of $499 to $599
Next is the GeForce GTX 770, this model is based on the GK104-425 die and is basically a higher clocked version of the GeForce GTX 680. It has a 256-bit memory bus, 4GB GDDR5 memory, and performance around 20-25 percent better than the GeForce GTX 670.
The final part in the lineup is the GeForce GTX 760 Ti. Based on the same GK104-225 die as the GeForce GTX 670, this model promises around 20-23 percent higher performance than a standard GeForce GTX 660 Ti.
The GTX 770 is anticipated to launch around mid-May, the GeForce GTX 780 should follow in the final days of May and the GTX 760 Ti is planned for a Computex launch in early June. Naturally, there's also a possibility that NVIDIA will launch all three parts together and claim to have the best product stack for gamers out there.