Complex sentence: On May 6,2016, Nvidia introduced at Dreamhack in Austin, Texas, the GeForce GTX 1080 and GTX 1070 built on Nvidia's Pascal-architecture.
Split into simpler sentences: On May 6,2016, Nvidia introduced the GeForce GTX 1080 and GTX 1070 at Dreamhack in Austin, Texas. The GeForce GTX 1080 and GTX 1070 are built on Nvidia's Pascal-architecture.