Is DDR4 Being Discontinued?

DDR4 is gradually being phased out by the largest global DRAM manufacturers, but it has not been completely discontinued. Samsung, SK Hynix, and Micron have been transitioning production capacity away from legacy DDR4 products and toward DDR5, HBM, server memory, and other higher-value products. However, DDR4 remains necessary for millions of existing systems that cannot immediately transition to a different memory generation.

Learn More: DDR5 vs HBM - Memory Technologies Powering AI Servers

Industrial equipment, networking hardware, telecommunications systems, medical devices, automotive electronics, aerospace systems, defense applications, and embedded platforms often remain in production for many years. These products may require specific DDR4 densities, speeds, temperature grades, packages, or manufacturer-qualified part numbers. As a result, DDR4 demand is declining more slowly than production capacity, creating an ongoing structural supply imbalance.

What Changed With Samsung and SK Hynix’s DDR4 Plans?

Reports published in 2025 indicated that Samsung and SK Hynix were reconsidering their DDR4 phase-out timelines as prices increased and supply tightened. SK Hynix informed customers that it would increase DDR4 output at its older Wuxi production lines, while Samsung was expected to continue selected production into 2026. Market reporting indicated that Samsung was continuing with its DDR4 end-of-life strategy. Samsung had not broadly deferred its EOL plan and that DDR4 supply would decline rapidly during 2026. SK Hynix’s additional Wuxi production appears to be a tactical adjustment rather than a reversal of the industry’s long-term migration away from DDR4.

Selective or temporary production adjustments do not represent a full return to high-volume DDR4 manufacturing, and do not guarantee broad supply relief.

Samsung DDR4 Production Outlook

Samsung continues to move its memory strategy toward advanced DRAM, DDR5, HBM4, and other products designed for artificial intelligence and hyperscale computing. The company began commercial HBM4 shipments in 2026 and said it expects its HBM sales to more than triple compared with 2025. Samsung is also expanding HBM4 production capacity and developing HBM4E products for future AI systems. As manufacturing resources shift toward these products, less capacity remains available for mature DDR4 components. Samsung DDR4 products may still be available through existing inventory, contract commitments, approved distribution channels, and the independent market. However, buyers should not assume that production will return to earlier volumes or that all DDR4 part numbers will remain equally available.

SK Hynix DDR4 Production Outlook

SK Hynix has also prioritized HBM, high-performance server memory, and next-generation DRAM. The company has described the current market as an HBM-led memory supercycle and continues to expand its advanced memory roadmap. SK Hynix has developed HBM4 production capabilities while investing in additional next-generation DRAM capacity. SK Hynix reportedly increased selected DDR4 production at its Wuxi facility, which contains older manufacturing lines suited to legacy DRAM. This adjustment can provide limited support for certain products, but it does not eliminate the broader DDR4 shortage.

Buyers who require exact SK Hynix part numbers should evaluate demand by individual device rather than relying on general market availability.

Micron Adds DDR4 Production at Fab 6

Micron’s Fab 6 facility in Virginia began producing LPDDR4 and DDR4 products in 2026. The facility is intended to support long-lifecycle applications, including automotive electronics, networking, industrial equipment, medical devices, aerospace hardware, and defense systems. The Fab 6 expansion represents a transfer and reallocation of production from Micron’s Taiwan operations rather than an increase in the company’s overall DDR4 and LPDDR4 capacity. DDR4 is expected to account for approximately 7% of Micron’s total DRAM output in 2026, with that share declining further in subsequent years.

The combined DDR4 and LPDDR4 output from Fab 6 is expected to increase through 2027, but the ramp will primarily support specialized, long-lifecycle markets rather than create broad consumer supply relief.

Learn More: Micron HBM, DDR5 and NAND Products Are Facing Supply Pressure

Why Is There a DDR4 Shortage in 2026?

The largest memory manufacturers are gradually moving away from mature DDR4 production. Even when selected lines remain active, total global DDR4 capacity continues to decline.

AI Demand Is Changing Production Priorities

AI accelerators and servers require large quantities of advanced memory. Manufacturers are therefore directing investment, manufacturing equipment, cleanroom space, and wafer capacity toward HBM, DDR5, and high-capacity server DRAM.

Samsung expects its HBM sales to more than triple in 2026, while SK Hynix continues to position HBM as a central part of its growth strategy. Many industrial and embedded systems cannot transition quickly to DDR5. Changing memory generations may require a new processor or memory controller, board redesign, firmware changes, validation, regulatory approval, and customer requalification. For these applications, continuing to source an existing DDR4 component may be less disruptive than redesigning the complete system.

Server and Contract Customers Receive Priority

Large cloud service providers, server manufacturers, and enterprise customers frequently secure memory through long-term supply agreements. These arrangements can limit the amount of material available to smaller OEMs, contract manufacturers, and spot-market buyers.

DRAM pricing is expected to continue rising through the second half of 2026 and into 2027, particularly for customers without long-term agreements.

Learn More: DDR4 and DDR5 Prices Surge

Taiwanese memory manufacturers and other suppliers are adding selected mature-node capacity, but this additional production has not fully offset reductions by the largest global manufacturers. Price pressure is still expected because new DDR4 capacity is insufficient to replace the supply leaving the market, leaving DDR4 pricing elevated and volatile.

Expect pricing to vary significantly by part number, density, manufacturer, date code, package, and order quantity.

Which DDR4 Products Are Most Difficult to Source?

Sourcing challenges are often greatest for products with limited qualified alternatives or long lifecycle requirements.

Availability must be evaluated at the individual part-number level. A general increase in DDR4 output does not necessarily improve supply for a particular density, package, speed, or qualification.

DDR4 vs. DDR5: Should Manufacturers Redesign?

DDR5 is the preferred long-term option for many new products, but migrating an existing DDR4 design is not always straightforward.

Manufacturers should compare the cost and risk of continued DDR4 sourcing with the engineering, validation, and scheduling requirements of a DDR5 redesign. For products near the beginning of their lifecycle, transitioning to DDR5 may reduce long-term obsolescence exposure. For mature or highly regulated products, strategic DDR4 procurement may remain the more practical option.

How Manufacturers Can Respond to the DDR4 Shortage

Organizations that depend on DDR4 should take a proactive, part-specific approach.

Forecast Demand by Part Number: Identify the exact DDR4 devices needed throughout the remaining product lifecycle. Forecast by density, configuration, speed, package, manufacturer, temperature grade, and qualification status.

Review End-of-Life and Last-Time-Buy Notices: Track manufacturer notices and supplier updates carefully. Do not rely solely on general market reports when making lifecycle decisions.

Qualify Alternate Manufacturers: Where technically possible, approve equivalent components from multiple memory manufacturers before shortages become critical.

Evaluate Lifecycle Buys: A last-time buy or scheduled purchasing agreement may be appropriate for products with predictable long-term demand. It's important to balance supply continuity against carrying costs, storage requirements, and excess-inventory risk.

Avoid Depending Exclusively on Spot Supply: Spot-market inventory can change quickly and may not provide consistent date codes, quantities, or pricing. Combine authorized, contractual, and qualified independent sourcing channels where appropriate.

Maintain Testing and Traceability Requirements: Parts sourced outside traditional channels should undergo appropriate inspection, testing, documentation review, and traceability verification based on the component’s application and risk level.

Source DDR4 and Other Memory Products Through Microchip USA

Microchip USA helps OEMs, contract manufacturers, and procurement teams source active, allocated, obsolete, and hard-to-find memory products. Our global sourcing network provides access to memory components from Samsung, SK Hynix and Micron.

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Learn More: Memory Sourcing Strategies for a Shortage-Driven Market

DDR4 Shortage 2026: Frequently Asked Questions