As important as Nvidia has become to the tech industry, its entire run-up in recent years has been tied to the data center. Now the chipmaker is going after the PC market, and Wall Street is recognizing the threat it poses. During a keynote address at Taiwan's Computex conference on Monday, Nvidia CEO Jensen Huang said his company, along with Microsoft , is going to "reinvent the PC." Nvidia's plan to build system-on-chips, or SoCs, for PCs sent shares of Advanced Micro Devices , Intel and