Micron launches first PCIe 6.0 SSDs with 28GB/s speeds, but they're built for AI data centers only

Micron 9650 Brings PCIe 6.0 SSDs to Market

Micron has entered mass production of the 9650 NVMe SSD, marking the arrival of the first PCIe 6.0 SSDs available for purchase1

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. These high-performance drives deliver sequential read speeds up to 28GB/s and sequential write speeds reaching 14GB/s, with random read performance hitting 5.5 million IOPS3

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. The data rates represent roughly double the performance of PCIe 5.0 alternatives for sustained reads, with write speeds climbing 40 percent higher1

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. Random write performance also improves by 22 percent, reaching 900,000 IOPS2

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The Micron 9650 lineup spans capacities from 7.68TB to 30.72TB and comes in both E1.S and E3.S form factors designed for datacenter deployment2

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. Smaller E1.S models up to 15.36TB support liquid cooling configurations3

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. Operating at 18 watts, these enterprise-grade SSDs arrive three years after the PCIe 6.0 specifications were finalized1

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Storage Technology for AI Drives Performance Demands

These PCIe 6.0 SSDs target AI data centers exclusively, where storage performance has become a critical constraint4

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. Micron Vice President Alvaro Toledo emphasized that storage is no longer secondary to compute, stating that "in an AI driven world where data must move continuously, predictably, and at massive scale, storage performance has become a first order design constraint"3

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. The drives are built specifically for AI inference workloads that require faster and more predictable data access, particularly for retrieval-augmented generation and scaling large language models with large context windows4

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High-speed storage has emerged as a key bottleneck in AI workloads, where it's used to offload components like key-value caches—essentially the model's short-term memory—for better interactivity over extended sessions2

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. Higher bandwidth helps alleviate storage bottlenecks by reducing CPU cycle demands and AI latency1

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. As data increasingly moves directly between storage and accelerators, the expanded PCIe bandwidth reduces CPU involvement and cuts transfer bottlenecks4

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Power Efficiency and Cooling Requirements Reshape Datacenter Design

Micron claims the 9650 delivers twice the sequential read efficiency within the same 25-watt power envelope as PCIe 5.0 drives3

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. This power efficiency allows AI data centers to operate at scale with a lower energy footprint, making facilities cheaper to run1

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. However, write efficiency measured in bits per watt only improves between 20 and 40 percent2

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. The increased performance means data centers can increase useful work without pushing facilities beyond existing power limits4

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Cooling requirements will rise as the extra speed generates greater heat output1

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. The drives support both air-cooled and liquid-cooled solutions depending on deployment needs, addressing setups where airflow alone isn't sufficient to manage heat in dense AI racks4

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. Micron conducted 18-month interoperability testing to ensure the drives continue working effectively under sustained high-speed operation1

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. The validation work included testing with switches, retimers, and extended cable setups before moving into mass production.

Hyperscalers Get First Access While Consumers Wait

The customer list for mass production PCIe 6.0 SSDs will be limited to hyperscalers and giant AI datacenter operators rather than everyday enterprise buyers4

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. The drives arrive ahead of the first PCIe 6.0 compatible CPUs from Intel, AMD, and Nvidia, which are expected later in 20262

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. Even with drives available, there's currently nothing for consumers to plug them into2

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Consumers face a long wait before PCIe 6.0 reaches desktop and laptop systems. The technology isn't expected to arrive on Intel's consumer-focused Nova Lake generation, and AMD hasn't announced PCIe 6.0 support for its next Ryzen refresh2

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. Beyond storage, the benefits of PCIe 6.0 aren't apparent yet for consumer platforms, as a single PCIe 4.0 x1 lane suffices for 10GbE networking and many consumer GPUs are now using x4 or x8 connectivity2

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Samsung Prepares Competing PCIe 6.0 Drives

Samsung is embarking on full-scale preparations for PCIe 6.0 SSDs, with first orders for R&D and mass production orders expected in the second half of 20265

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. Samsung showed its first PCIe 6.0 drive, the PM1763, at the Future of Memory and Storage summit last summer, where it won Best of Show for Most Innovative Memory Technology5

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That enterprise drive offers 256TB capacity, with a 512TB version planned for 20275

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. The competition signals how AI demand is reshaping memory and storage priorities across the industry, with datacenter needs driving innovation while consumer applications remain years away from benefiting from these advances.