The End

At the eights annual Microprocessor Forum conference in October Nexgen gave the world a first look at its next generation processor, the Nx686. It was introduced as a direct competitor to Intel's Pentium Pro. The Nx686 would have 6.5 million transistors, almost double the amount of the Nx586. Introduction speed would be 180MHz and IBM would manufacture the Nx686 with its advanced five-layer CMOS process at 0.35 micron. The future looked bright for Nexgen, it expected to announce a new manufacturing partner soon and Samsung was contracted for the production of chipsets.
Then, on October the 30 1995, AMD announced its intention to take over Nexgen for about $850 million. AMD had troubles to get its 586 class CPU, the K5, to market and would get an almost ready 686 class chip in house. The merger of NexGen with AMD was formalized on January 17 1996.
After the merger with AMD things got quiet around Nexgen and the Nx586. No new speeds were announced, no new customers or distributers, nothing.
Not really a fitting end to a CPU with so many new technologies. But in the end it is all about the money. Unfortunately the fact that the Nx586 needed a proprietary motherboard slowed down user adaptation. Sales were just not good enough to make the Nx586 a success.
When AMD took over Nexgen they changed the Nx686 design to make it compatible with Intel's platforms. This resulted in the K6 which became a good selling CPU for AMD. The fact that you could use it in combination with many different motherboards that were available made it an option for more people.