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HBM · Oct 13, 2026

Microsoft Maia 300 pairs 288GB of HBM4 with 18TB/s bandwidth

Microsoft's third-generation Azure inference accelerator is reported with eight HBM4 stacks and four DDR memory tiles; a rack can house 96 accelerators.

Price impact: 2Direction: upSource: StorageReview

StorageReview reports that Maia 300 combines a TSMC N2P compute die with eight HBM4 stacks providing 288GB and 18TB/s of bandwidth, alongside four DDR memory tiles. The article lists a 950W TDP per accelerator and says a rack holds 96 units. These figures underline the high memory content of AI infrastructure, although the report gives no order volumes or supplier allocation from which to estimate market demand.

MicrosoftTSMCHBM4DDRAI accelerator
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