P61791-B21 HPE 128GB DDR5-4800 ECC RDIMM 4Rx4 1.1V Compatible Memory
128GBDDR5-4800RDIMM4Rx41.1V
SKU: P61791-B21
$ 4,293
≈ €3848.00
🟢 250 pcs available · Lead time: 3-4 Days · Updated 15 Oct 2026
More stock for this part
QuantityPriceShips InUpdated
50+ pcs$4500Lead time 1-2 daysUpdated 19 Oct 2026
100 pcsRequestLead time 3-4 daysUpdated 19 Oct 2026
91 pcs$4293Lead time 3-4 daysUpdated 15 Oct 2026
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Tier-1 Memory
Samsung, Micron & SK Hynix
Server Compatibility
Dell, HPE, Lenovo, Cisco and more
Volume Pricing
Fast response for B2B quantity requests
Technical Support
Compatibility and sourcing assistance
Overview
- HPE does not manufacture memory.
Their systems are qualified using modules from global tier-one manufacturers such as Samsung, Micron, and SK Hynix. - This module is JEDEC-compliant and spec-matched for HPE platforms
Ensuring reliable compatibility, performance, and long-term stability. - Supplied as:
M321RAGA0B20-CWK Samsung 128GB DDR5-4800 ECC RDIMM 4Rx4 1.1V Memory. - Fully compatible
Fully compatible with servers requiring P61791-B21.
P61791-B21 Specifications
| Compatible OEM | HPE |
|---|---|
| Part Number | P61791-B21 |
| Memory Size | 128GB |
| Memory Speed | DDR5-4800 |
| Memory Technology | DDR5 |
| Speed | 4800 |
| Rank and Organization | 4Rx4 |
| Rank Type | Quad Rank |
| Chip Organization | x4 |
| Error Correction (ECC) | ECC |
| CAS Latency | CL40 |
| DIMM Type | Registered |
| Form Factor | RDIMM |
| Voltage | 1.1V |
| Pins | 288 |
| Height | STD |
| JEDEC Specification | PC5-38400R |
| Temperature | 0°C to 95°C |
Compatible Systems
Same-Spec Alternatives
Alternative part numbers with matching key specifications.
Need help choosing between available part numbers? Contact us for pricing and availability.