P64984-B21: HPE / HP 16GB (1x16GB) Single Rank x8 DDR5-6400 CAS-52-52-52 EC8 Registered Smart Memory Kit (RDIMM for ProLiant Gen11 servers)
MPN: P64984-B21|By: HPE / HP

Starting from
$1,195
Indicative. Final pricing is confirmed with your quote.
In Stockships worldwide
- Condition:
- New (authorized channel)
- Warranty:
- Full manufacturer warranty
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Bulk order? Request volume pricing
Authorized & warrantied
Sourced through authorized distribution, with the full manufacturer warranty.
Compatibility checked
Validated against your server platform before dispatch.
Delivery & lead time
Confirmed with your quote, including expedited freight where available.
Business & public sector
POs, net terms and volume pricing for qualified organizations, government and edu.
Product overview
Part number P64984-B21 identifies this HPE / HP HPE 16GB (1x16GB) single rank x8 DDR5-6400 CAS-52-52-52 EC8 registered smart Memory Kit (RDIMM for ProLiant Gen11 servers). Memory is the part most often ordered wrong, because rank, voltage and population rules differ per platform and per slot. This module is DDR5-6400. Give us the server model and the DIMMs already fitted and we will confirm the configuration is supported.
Send the quantity you need and we will come back within 48 business hours with availability confirmed, not estimated.
Specifications
General
- Manufacturer part number
- P64984-B21
- Generation
- Gen11
- Product Type
- Server Memory
- Manufacturer
- HPE / HP
Technical specifications
- Capacity
- 16GB
- Memory Type
- DDR5-6400
- Module Type
- RDIMM
Interfaces & connectivity
- Port Configuration
- 1x16GB
Compatibility & compliance
- Compatible Platform
- ProLiant Gen11
Specifications for P64984-B21 as published by HPE / HP. Where a value is absent it is because we could not verify it, not because it does not exist. Ask and we will check.
Where the HPE / HP P64984-B21 is deployed
- Like-for-like replacement of P64984-B21 in an existing system
- Raising host memory to fit more virtual machines per node
- Standardising a host on one module type and speed
Who this part is for
- Virtualisation teams raising host memory to fit more guests per node
- Procurement buying memory kits against a documented configuration
- Engineers populating channels correctly on a new or part-filled board
What you get ordering this from us
Ordered by part number
The order is placed against P64984-B21, not against a description of it, so there is no room for a substitution you did not agree to.
Rank and voltage confirmed
We check rank, voltage and module type against the platform before quoting, which is where most memory orders go wrong.
Volume pricing
The listed price is per unit; tiered pricing applies at quantity and purchase orders are accepted.
Questions buyers ask about this part
Is P64984-B21 genuine and is the warranty intact?
Yes, new and sealed, with the HPE / HP warranty and the firmware update path intact. We do not sell refurbished stock as new, and we do not source grey-market units.
Will P64984-B21 work in my server?
Send the server model and a list of the DIMMs already fitted. Rank, voltage and population order all have to agree, and a module that is electrically compatible can still be unsupported in a given slot. We map the population before you order.
Do you accept purchase orders and quote at volume?
Yes. We quote against a purchase order and hold the price for the quote period, with tiered rates at quantity. Net terms are available once the account is approved.
Compare other Server Memory we stock
| Model | Brand | Key spec | Availability | From |
|---|---|---|---|---|
| SK hynix 32GB DDR5-5600 PC5-44800 ECC Registered CL46 288-Pin RDIMM Server Memory Module | SK hynix | Capacity: 32GB | In Stock | $215 |
| Samsung 16GB DDR4-3200 PC4-25600 ECC Registered CL22 288-Pin RDIMM Server Memory Module | Samsung | Capacity: 16GB | In Stock | $55 |
| Micron 128GB DDR4-3200 PC4-25600 ECC Load-Reduced CL22 288-Pin LRDIMM Server Memory Module | Micron | Capacity: 128GB | In Stock | $500 |
| Dell Technologies 16GB DDR5-4800 PC5-38400 ECC RDIMM CL40 288-Pin Server Memory Module | Dell Technologies | Capacity: 16GB | In Stock | $95 |
| HPE 16GB DDR5-4800 PC5-38400 ECC RDIMM CL40 288-Pin Server Memory Module | HPE | Capacity: 16GB | In Stock | $95 |
| Lenovo 16GB DDR5-4800 PC5-38400 ECC RDIMM CL40 288-Pin Server Memory Module | Lenovo | Capacity: 16GB | In Stock | $90 |
Browse all Server Memory or everything we stock from HPE / HP.
Specifying a system, not just the part?
Host memory on an AI node is normally sized against accelerator memory, so the model and its working set both fit.
