[ RAMBUS RIMM MODULES // IDENTIFIED COMPONENT ]
Samsung MR16R1628AF0-CM8
A distinct Samsung RDRAM RIMM module SKU. Specifications below identify the marked product and keep its transfer class, module revision, and host restrictions separate from similarly sized Rambus parts.
IDENTIFICATION: Confirm the complete label and SPD against the exact module sheet. Similar Samsung RIMM names can indicate different capacities, speed grades, ECC widths or revisions.
Recorded specifications
| Manufacturer / exact part number | Samsung MR16R1628AF0-CM8 |
|---|---|
| Capacity | 256 MB |
| Memory interface / form factor | Rambus DRAM (RDRAM), 184-contact RIMM module; not a DDR DIMM or SODIMM |
| Transfer-rate / speed grade | PC800-40 (800 MT/s) |
| Latency | 40 ns module access class |
| Nominal module supply | 2.5 V RDRAM module class; check Samsung module sheet and host rail tolerance for this exact revision |
| Data width / error checking | Non-ECC, 16-bit data path |
| Channel topology | 16-bit Rambus channel for non-ECC variants; ECC module uses a wider check-bit path. RIMMs form a continuous channel rather than independent parallel DIMM drops. |
| Termination / continuity | Use passive C-RIMMs in positions not occupied by memory modules when required by the board topology; a C-RIMM bridges channel continuity and has no usable memory capacity. Channel termination is determined by the host design, not by treating a C-RIMM as a terminator. |
| Platform compatibility | Candidate platform class: RDRAM-equipped systems whose controller, BIOS, module voltage, capacity and timing explicitly support this Samsung SKU. Intel 850 platforms are generally PC600/PC800-era; Intel 850E supports PC800/PC1066 operation as specified by the board vendor. ECC models additionally require ECC-capable controller/firmware. This is a chipset-era reference only, not a blanket compatibility guarantee. |
| Revision / identification | Read the full label including MR16R1628AF0-CM8, SPD data, PCB revision and date code. Capacity and nominal PC rating alone do not establish electrical, ECC, timing, or BIOS compatibility. |
Topology and installation
Install matched RIMMs in the channel positions prescribed by the host manual. Intel 850-era dual-channel boards commonly require matched pairs; an empty RIMM position in a channel must use the supplied passive continuity RIMM (C-RIMM), not remain open. Follow the exact board manual because slot population order and permitted mixtures vary.
Do not mix module speed grades or ECC/non-ECC module types unless the specific chipset and board manual explicitly lists that combination. Install with even pressure, align the offset key, and de-energize the system before handling. C-RIMMs are continuity pieces, not spare memory sticks.
SKU-specific notes
The AF0 revision is separately cataloged from the EG0 256 MB SKU. Treat the complete part number and SPD contents as the identity, not just “256 MB PC800.”
Candidate platform class: RDRAM-equipped systems whose controller, BIOS, module voltage, capacity and timing explicitly support this Samsung SKU. Intel 850 platforms are generally PC600/PC800-era; Intel 850E supports PC800/PC1066 operation as specified by the board vendor. ECC models additionally require ECC-capable controller/firmware. This is a chipset-era reference only, not a blanket compatibility guarantee.
Sources & further reading
- Samsung MR16R1628AF0-CM8 module datasheet (archived)Model-specific Samsung datasheet or archived technical record; use it to verify the exact suffix, module organization, voltage and timing.
- Samsung 256 MB PC800 RIMM listing (Memory4Less)Independent archival/catalog identity reference for the specific marketed module and capacity.
- Intel Pentium 4 / Intel 850 chipset platform design guide (official PDF)Platform-level installation and RIMM population guidance; the host board manual controls the final slot/C-RIMM arrangement.
- Rambus RDRAM memory architectureRambus overview of the RDRAM channel architecture; not a compatibility list for this specific board.
Archived seller listings establish historical SKU identity, not present-day support or guaranteed authenticity. For service, use the exact computer/motherboard manual and current physical label/SPD.