Super Micro Computer reported preliminary Q4 orders exceeding $60 billion on July 21, the largest backlog in company history. The server maker’s stock jumped 15-17% in after-hours trading, closing Tuesday up 7% before climbing another 18% overnight to $30.12.

The $60 billion figure is staggering when you consider Super Micro’s market cap at the time hovered around $19 billion. The company is booked to deliver more hardware than its entire enterprise value, a reflection of insatiable demand for AI infrastructure.

SpaceX and the Gigawatt Data Center

CEO Charles Liang credited new work with SpaceX during the quarter. He posted on X that he was “proud to co-build another new Gigawatt AI datacenter for SpaceX and XAI within a year.” The timing aligns with Elon Musk’s XAI push and SpaceX’s satellite internet infrastructure build-out.

Super Micro also disclosed preliminary gross margin of 15-17%, roughly double the 8.2-8.4% previously guided. Rising margins signal the company is being pickier about which orders it accepts—a luxury only the most sought-after suppliers can afford.

The Catch: These Orders May Not Close

Super Micro cautioned that some orders “may not constitute binding purchase commitments” and could be subject to cancellation or delay. That’s boilerplate language, but it matters. In a down market, customers can walk away. Still, even at 70% conversion, the backlog is massive.

The company also flagged that these orders will be delivered over future quarters. This isn’t revenue tomorrow—it’s a multi-year pipeline that keeps Super Micro in business and justifies hiring and capital spending.

The bigger picture: This is what AI infrastructure demand looks like when it’s running hot. The bottleneck isn’t demand or capability—it’s manufacturing capacity.