Shares of chip company Advanced Micro Devices and server maker Super Micro Computer tumbled in early trading on Wednesday after the companies posted underwhelming results in their data center segments,

On the top line, AMD generated sales of $7.69 billion, representing a 32% lift from the year-ago period. This tally also exceeded the consensus view of $7.42 billion. Still, it wasn’t enough to convince investors to hold onto AMD stock,

Advanced Micro Devices Inc. earnings are expected to show the chipmaker is increasingly benefiting from the artificial intelligence arms race. The question is whether it’s enough to justify a rally that has outpaced Nvidia Corp.

Nvidia stock was edging down early on Wednesday. The chip maker could face delays in being able to sell its artificial-intelligence processors to Chinese customers.