Microsoft displayed Maia 300 trays containing four 950-W accelerators, each with 288 GB of HBM4 (high-bandwidth memory).

ServeTheHome reported seeing Microsoft’s Maia 300 platform at the Open Compute Project (OCP) Summit 2026. Its description identifies four accelerators per tray, with each accelerator carrying 288 GB of HBM4.

The reported 950-W figure applies to each accelerator, not to the entire tray, rack, or data center. Likewise, the 288 GB memory specification is per accelerator rather than shared tray-level capacity.

The source establishes a displayed hardware configuration, not a cloud-service launch or a completed fleet deployment. The supplied excerpt contains no throughput benchmarks, interconnect specifications, rack configuration, pricing, or general-availability date.