Silicon Motion Technology (SIMO) reported Q1 non-GAAP earnings late Tuesday of $1.58 per diluted American depositary share, up from $0.60 a year earlier.

Analysts surveyed by FactSet expected $1.28.

Revenue for the quarter ended March 31 was $342.1 million, compared with $166.5 million a year earlier.

Analysts surveyed by FactSet expected $299.5 million.

For Q2, the company said it expects revenue of $393 million to $411 million. Analysts polled by FactSet expect $306.6 million.