Samsung Electronics on Friday warned of sluggish sales of its artificial intelligence chips in the current quarter due to U.S. export restrictions to China, and as it worked towards launching an improved version of its high-end chips.

Samsung Electronics reported fourth-quarter profit that rose 130% from a low base, confirming it had missed earlier estimates due to slowing memory chip demand and extra costs as it works towards providing high-end chips to Nvidia.

Samsung Electronics reported better-than-expected fourth-quarter revenue and operating profit, though the latter dropped by nearly a third from the previous quarter.