IC Insights recently put out some estimates on the microprocessor market. Naturally, Intel (NASDAQ:INTC) takes the cake with the top spot, but Advanced Micro Devices (NASDAQ:AMD) lost a lot of traction last year and fell to No. 4. That was an opening for Qualcomm (NASDAQ:QCOM) and Samsung to move in, claiming the No. 2 and No. 3 positions, respectively. Much of Samsung's microprocessor revenue is generated from its foundry relationship with Apple (NASDAQ:AAPL).

The data shows how quickly mobile adoption is changing the industry. Qualcomm had recently overtook Intel's market cap, which Intel has since reclaimed. Intel and AMD may not be relevant in mobile quite yet, but both companies remain determined.

In the video below, Fool contributor Evan Niu, CFA, discusses the challenges that Intel and AMD face in mobile.