Check out the companies making headlines before the bell. Nvidia — The graphics processing unit manufacturer slipped nearly 2% after its data center revenue came in below estimates for the second straight quarter. However, Nvidia posted a second-quarter earnings and revenue beat. Other chip stocks such as Taiwan Semiconductor, ASML, Advanced Micro Devices and Microchip Technology moved lower in sympathy. Wynn Resorts — The casino operator gained 2% following an upgrade from UBS to buy from neutral. The bank raised its Macao estimates and cited a more bullish view on Wynn's Al Marjan resort in the United Arab Emirates as additional catalyst. International Paper — The paper stock added 2% following an upgrade to buy from neutral at Bank of America. While the bank still expressed caution over

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