Elon Musk has provided the most detailed timeline yet for the expansion of xAI's Colossus 2 computing cluster, indicating that the facility could more than double its Nvidia chip count by the end of the year. In a post on X on Friday, Musk detailed the current configuration and the planned additions, which would significantly boost the Memphis-area facility's AI computing capacity.
According to Musk, Colossus 2 currently operates 110,000 Nvidia GB200 chips and 440,000 GB300 chips. He expects an additional 220,000 GB300 chips to become fully operational next week, with another 220,000 arriving in November. A third batch of 220,000 GB300 chips could follow in late December, though Musk noted this final wave is contingent on favorable conditions.
If all three planned GB300 waves materialize on schedule, Colossus 2 alone would reach approximately 1.21 million chips, surpassing xAI's previously stated goal of equipping the Memphis facility with 1 million GPUs by the end of 2026. Combined with Colossus 1's existing 230,000 chips, the total would reach roughly 1.44 million GPUs by year-end.
Musk also provided updated specifications for Colossus 1, which he said runs 150,000 H100 chips, 50,000 H200 chips, and 30,000 GB200 chips. This earlier phase of the cluster has been operational for some time, and the new details offer a clearer picture of the overall scale of xAI's computing infrastructure.
The expansion is part of xAI's broader strategy to compete with rivals such as OpenAI, Google, and Anthropic in training frontier AI models. The Colossus buildout has been central to that ambition, though the Memphis cluster has previously drawn scrutiny over its power demands, with reports noting significant local electricity and water infrastructure requirements to support its rapid growth.
Musk's announcement comes amid continued strong demand for Nvidia's AI chips. Nvidia reported fiscal second-quarter revenue of $96.2 billion for the period ended July 26, 2026, up 106% year over year, with data center revenue rising 117% to $89 billion. The company has guided for revenue of $108 billion in the current quarter, which would mark its first $100 billion quarter.
Nvidia shares closed at $224.58 on Thursday, down 0.41%, before rising to $226.04 in premarket trading Friday. The stock's market capitalization stood at $5.42 trillion. The pace of Colossus 2's expansion will depend on Nvidia's chip supply and xAI's ability to bring new capacity online on schedule, something Musk himself flagged as uncertain for the final planned batch.
xAI has said its Memphis compute capacity also supports AI workloads for outside customers, adding a further dimension to how quickly the buildout needs to scale. Nvidia's next scheduled earnings report, due around the end of November, will offer the next major data point on whether chip demand from xAI and other large AI buyers is translating into revenue growth at the pace the market has priced in.
This article is for informational purposes only and does not constitute financial advice.
