M321RBGA0B40-CWKZJ: Samsung 256GB PC5-38400 DDR5-4800MHz Memory
MPN: M321RBGA0B40-CWKZJ|By: Samsung
Starting from
$11,280
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
Samsung lists M321RBGA0B40-CWKZJ as a 256GB PC5-38400 DDR5-4800MHz Memory. A channel runs at the speed of its slowest module, so a faster part fitted alongside an older one buys nothing. This module is PC5-38400. Tell us what is already installed and we will keep the channel consistent.
Send a photo or a dump of the current DIMM layout and we will map the population for you before you order.
Specifications
General
- Manufacturer part number
- M321RBGA0B40-CWKZJ
- Product Type
- Server Memory
- Manufacturer
- Samsung
Technical specifications
- Capacity
- 256GB
- Memory Type
- DDR5
- Memory Speed
- PC5-38400
Published specifications for M321RBGA0B40-CWKZJ. Anything not listed here we will confirm against the manufacturer's documentation before quoting, because we would rather answer the question than let you assume.
Where the Samsung M321RBGA0B40-CWKZJ is deployed
- Like-for-like replacement of M321RBGA0B40-CWKZJ in an existing system
- Raising host memory to fit more virtual machines per node
- Filling the remaining channels on a part-populated board
Who this part is for
- Teams retiring mixed-speed memory in favour of one consistent part
- 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 M321RBGA0B40-CWKZJ, not against a description of it, so there is no room for a substitution you did not agree to.
No substitutions without asking
If we cannot supply the exact code we tell you what we can supply and why, rather than shipping an equivalent and letting you find out.
Compatibility checked
We confirm the part is supported on your platform before it ships, rather than leaving the check to you.
Questions buyers ask about this part
Is M321RBGA0B40-CWKZJ genuine and is the warranty intact?
Yes, new and sealed, with the Samsung warranty and the firmware update path intact. We do not sell refurbished stock as new, and we do not source grey-market units.
Will M321RBGA0B40-CWKZJ 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 |
| 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 |
| Kingston 8GB DDR4-3200 PC4-25600 ECC RDIMM CL22 288-Pin Server Memory Module | Kingston | Capacity: 8GB | In Stock | $35 |
Browse all Server Memory or everything we stock from Samsung.
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.