Samsung is mounting a serious challenge to TSMC's grip on advanced chipmaking, which is good news for big tech buyers who want a second supplier and a warning sign for TSMC.

• Samsung's new Texas plant is already fully booked before it even starts test production, on orders from Tesla, Broadcom, and Arm.
• Its 2nm yield has climbed from 60% to 80% this year, enough to make chips at scale.
• Big tech firms are actively looking for an alternative to TSMC, and Samsung is positioning itself as that option.
• A second Texas plant breaks ground at the end of this year, aiming to match TSMC's output.
• Intel and Japan's Rapidus are pushing into the same 2nm race, so the fight for next-generation chips is getting crowded.

Outlook: Mass production in Texas starts next year, and 2026 will show whether Samsung can hold these customers or TSMC wins them back.