Refurbished DDR4 Memory Chips
DDR4 SDRAM is the mainstream DRAM generation for servers, networking and industrial products, and it is now being phased out in favour of DDR5 while demand continues. Supply is allocated and lead times are long. AURCAL sources DDR4 chips to order and refurbishes and tests them before shipment.
- We source DDR4 to order and state the condition on every quote.
- Parts are inspected, reballed where needed, tested and burned in at our Shenzhen base.
- The list below is reference data from public part lists, not our inventory.
What should I check before buying DDR4 chips?
Check the full part number and suffix, the density and width (for example 16Gb x16), the speed grade, the temperature grade and the package. Parts that share a base number can differ in speed or temperature range.
Is DDR4 end-of-life?
The three large DRAM makers announced DDR4 phase-out plans in 2025 and reportedly extended some of them because customers kept ordering. Supply remains tight. See our DDR4 shortage guide.
DDR4 vs DDR5: can I swap them?
No. DDR4 and DDR5 use different voltages, interfaces and pin layouts. A board designed for DDR4 needs DDR4.
Key differences
| Generation | Supply voltage | Typical data rates |
|---|---|---|
| DDR4 | 1.2 V | 1600 to 3200 Mbps |
| DDR5 | 1.1 V | 4800 Mbps and above |
Reference part numbers (151)
Every part number below is a link. Core parts open their own page; the others open the reference record with its specifications and a quote button. Search all DDR records in the interactive catalog.
Frequently asked questions
Do you stock DDR4 chips?
We do not hold stock. We source to order and confirm availability before quoting.
Do you test DDR4 parts?
Yes. DDR4 devices are checked on dedicated test machines and burned in. The scope per lot is stated in the quote.
How do I request this?
Use the quote form with the exact part number and quantity. We source to order and confirm availability before we quote.
Related: DDR4 shortage 2026: lead times and refurbished DDR4 · Quality process · Glossary
Sources and further reading
External pages written by the standards bodies and manufacturers named here. AURCAL is not affiliated with them. Links last checked 1 November 2026.
- JEDEC: JESD79-4 DDR4 SDRAM standard – Official standard listing for DDR4 SDRAM.
- JEDEC Solid State Technology Association – The standards body for microelectronics, including DRAM and flash memory.