Samsung M321R4GA3EB2-CCP 32G DDR5 6400 RDIMM
The Samsung M321R4GA3EB2-CCP is a 32GB DDR5 unbuffered DIMM rated for 4800 MT/s with a PC5-38400 speed grade, aimed at system integrators and refurbishers building workstations, desktop platforms, and professional computing systems that take DDR5 UDIMMs rather than registered modules. Its 2Rx8 dual-rank, x8-based DRAM layout and on-die ECC make it suitable for memory-dense configurations in professional and HPC-adjacent environments, and its 1.1V operation keeps thermals in line with the JEDEC DDR5 standard. Note that despite appearing in listings under RDIMM-associated part codes, the source identifies this module as UDIMM — verify your platform’s memory type support before ordering, as DDR5 UDIMMs cannot be mixed with registered modules.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model Number | M321R4GA3EB2-CCP |
| Brand | Samsung |
| Memory Type | DDR5 UDIMM |
| Capacity | 32GB (single module; pairs typical for dual-channel desktop/workstation platforms) |
| Data Rate | 4800 MT/s (JEDEC baseline DDR5 speed; final rate platform dependent) |
| Speed Grade | PC5-38400 |
| Rank Configuration | 2Rx8 (dual rank, x8-based DRAM organization) |
| ECC Feature | On-Die ECC (internal DRAM ECC only — not full registered ECC memory) |
| Operating Voltage | 1.1V |
| Pin Count | 288-pin |
| Form Factor | UDIMM (Unbuffered DIMM) |
| DRAM Organization | x8-based DRAM |
| Bandwidth | 38.4 GB/s |
| Compliance | JEDEC DDR5 Standard |
| Operating Temperature | 0°C to 85°C |
| Applications | Desktop PCs, Workstations, Professional Computing Systems, and High-Performance Computing (HPC) Platforms |
Good to know
- Compatibility: as an unbuffered DIMM, this module targets desktop, workstation, and enthusiast/HPC platforms — it will not work in server boards that require RDIMMs, and DDR5 modules are not backward compatible with DDR4 slots. Populate paired identical modules for dual-channel operation.
- Family positioning: within Samsung’s DDR5 lineup, this sits at the JEDEC-standard 4800 MT/s tier — a capacity-per-slot play rather than a speed play, well suited to memory-dense workstation builds, virtualization test benches, and cache-adjacent workloads where stability matters more than headline bandwidth.
- Buying tip: confirm your motherboard’s qualified vendor list (QVL) and supported speed grade before purchasing, and match capacity, rank (2Rx8), and speed grade across all modules in a build to avoid mixed-population stability issues.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
The Samsung M321R4GA3EB2-CCP is a 32GB DDR5 unbuffered DIMM rated for 4800 MT/s with a PC5-38400 speed grade, aimed at system integrators and refurbishers building workstations, desktop platforms, and professional computing systems that take DDR5 UDIMMs rather than registered modules. Its 2Rx8 dual-rank, x8-based DRAM layout and on-die ECC make it suitable for memory-dense configurations in professional and HPC-adjacent environments, and its 1.1V operation keeps thermals in line with the JEDEC DDR5 standard. Note that despite appearing in listings under RDIMM-associated part codes, the source identifies this module as UDIMM — verify your platform’s memory type support before ordering, as DDR5 UDIMMs cannot be mixed with registered modules.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model Number | M321R4GA3EB2-CCP |
| Brand | Samsung |
| Memory Type | DDR5 UDIMM |
| Capacity | 32GB (single module; pairs typical for dual-channel desktop/workstation platforms) |
| Data Rate | 4800 MT/s (JEDEC baseline DDR5 speed; final rate platform dependent) |
| Speed Grade | PC5-38400 |
| Rank Configuration | 2Rx8 (dual rank, x8-based DRAM organization) |
| ECC Feature | On-Die ECC (internal DRAM ECC only — not full registered ECC memory) |
| Operating Voltage | 1.1V |
| Pin Count | 288-pin |
| Form Factor | UDIMM (Unbuffered DIMM) |
| DRAM Organization | x8-based DRAM |
| Bandwidth | 38.4 GB/s |
| Compliance | JEDEC DDR5 Standard |
| Operating Temperature | 0°C to 85°C |
| Applications | Desktop PCs, Workstations, Professional Computing Systems, and High-Performance Computing (HPC) Platforms |
Good to know
- Compatibility: as an unbuffered DIMM, this module targets desktop, workstation, and enthusiast/HPC platforms — it will not work in server boards that require RDIMMs, and DDR5 modules are not backward compatible with DDR4 slots. Populate paired identical modules for dual-channel operation.
- Family positioning: within Samsung’s DDR5 lineup, this sits at the JEDEC-standard 4800 MT/s tier — a capacity-per-slot play rather than a speed play, well suited to memory-dense workstation builds, virtualization test benches, and cache-adjacent workloads where stability matters more than headline bandwidth.
- Buying tip: confirm your motherboard’s qualified vendor list (QVL) and supported speed grade before purchasing, and match capacity, rank (2Rx8), and speed grade across all modules in a build to avoid mixed-population stability issues.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
