The upcoming 8TB SD cards conform to the SDUC (Secure Digital Ultra Capacity) standard, a category that the SD Association introduced for cards with capacities spanning from 2TB up to 128TB. Therefore, while 8TB of capacity is impressive, there's still headroom for bigger SD cards in the future. Similar to microSD Express , SDUC is an emerging standard and requires new hardware.
From a compatibility standpoint, these 8TB SDUC cards are not backward compatible with older card readers and devices. Sometimes, when new cards launch, they are backward compatible with existing hardware but run at lower speeds. However, that isn't the case for SDUC cards. They will require new card readers and devices that support them.
At the moment, there aren't any devices that support SDUC cards, so you can't use them even if Sandisk or other manufacturers started giving them away. It remains to be seen when, and by whom, the SDUC standard will be adopted. For example, the microSD Express standard was introduced in 2019 and remained dormant until the Nintendo Switch 2 , which launched six years later. To date, Nintendo's handheld gaming console is the only device to have embraced microSD Express. Therefore, it will likely take some time before SDUC cards become mainstream.
According to the photograph that Notebookcheck snapped at Computex 2026, Sandisk will launch 4TB microSDUC and 8TB SDUC cards under its Ultra lineup. It's a surprising move since the Extreme Pro lineup is superior and typically offers better performance.
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Key considerations
- Investor positioning can change fast
- Volatility remains possible near catalysts
- Macro rates and liquidity can dominate flows
Reference reading
- https://www.tomshardware.com/pc-components/microsd-cards/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/microsd-cards/8tb-sd-cards-are-set-to-ship-shortly-after-a-two-year-delay-mind-blowing-storage-at-possibly-bank-breaking-prices#main
- https://www.tomshardware.com/subscription
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Informational only. No financial advice. Do your own research.