DDR5 RDIMM Server Memory 32GB 16GB 4800-5600MHz ECC Used
Enterprise DDR5 RDIMM
Enterprise DDR5 RDIMM is the next-generation server memory standard, offering 4800 / 5200 / 5600 MT/s MT/s speeds, 1.1V (vs DDR4 1.2V) operating voltage, and 16GB / 32GB / 64GB / 128GB per DIMM per-DIMM densities. With 2 independent sub-channels per DIMM (vs 1 for DDR4) independent sub-channels and on-die ECC, DDR5 delivers DDR5-4800: 38.4 GB/s per DIMM; DDR5-5600: 44.8 GB/s per DIMM—double the bandwidth of DDR4.
| Specification | Details |
|---|---|
| Speeds | 4800 / 5200 / 5600 MT/s |
| Voltages | 1.1V (vs DDR4 1.2V) |
| Densities | 16GB / 32GB / 64GB / 128GB per DIMM |
| Channels | 2 independent sub-channels per DIMM (vs 1 for DDR4) |
| Burst Length | BL16 (vs BL8 for DDR4) |
| Bandwidth | DDR5-4800: 38.4 GB/s per DIMM; DDR5-5600: 44.8 GB/s |
| Ecc | On-die ECC + side-band ECC (RDIMM) |
Need processors too? Need processors for this memory? DDR5 RDIMM pairs with FCLGA4677 (Sapphire Rapids / Emerald Rapids) and FCLGA4710 (Xeon 6) platforms - both ranges are in stock, see the server processors range.
Frequently Asked Questions
\What is DDR5 RDIMM?
DDR5 RDIMM is the next-generation registered DIMM for servers, offering 2× bandwidth over DDR4, on-die ECC for reliability, and lower 1.1V voltage for power efficiency.
How does DDR5 compare to DDR4?
DDR5 doubles peak bandwidth (38.4-44.8 vs 19.2-25.6 GB/s), halves voltage (1.1 vs 1.2V), adds on-die ECC, and splits each DIMM into 2 independent sub-channels for better concurrency.
Can DDR5 work in DDR4 slots?
No. DDR5 has a different physical key notch and pin layout. DDR4 and DDR5 are not interchangeable. If your platform takes DDR4, see our DDR4 RDIMM memory listing for 16GB to 64GB modules at 2133-3200 MT/s.
What does RDIMM mean vs UDIMM?
RDIMM (Registered DIMM) adds a register chip between the memory controller and DRAM chips—reducing electrical load for higher density (up to 128GB) and server stability. UDIMM is unbuffered for desktops.
Available at Zhongxin Data — enterprise network hardware specialists. Worldwide shipping from Hong Kong, China.