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Two green DDR4 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR4 3200MHz ECC RDIMM 4Rx4 CL22 1.2V 288-Pin Lenovo ThinkEdge SE450 memory upgrade

SKU CH-573H-Y8R51

A 256 GB DDR4 ECC registered server memory kit with two 128 GB modules running at 3200 MHz CL22 1.2 V for the Lenovo ThinkEdge SE450 edge AI server

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 256GB kit (2×128GB) expands ThinkEdge SE450 capacity for AI workloads
  • DDR4 3200MHz CL22 delivers high-throughput registered performance
  • ECC RDIMM 4Rx4 detects and corrects data errors automatically
  • 2V operation reduces power draw in edge deployments
  • 288-pin DDR4 form factor fits Lenovo ThinkEdge SE450 memory slots

256GB DDR4 ECC RDIMM kit for Lenovo ThinkEdge SE450

This 256GB kit contains two 128GB DDR4 3200MHz ECC RDIMM modules built for the Lenovo ThinkEdge SE450 Edge AI Server. Registered design and 4Rx4 organisation provide the signal integrity required by high-density server platforms. The kit delivers 256GB of error-correcting memory in a matched pair.

Upgrades from lower-capacity or non-ECC DDR4 RDIMMs

Replacing smaller RDIMMs or unbuffered modules with this 2x128GB kit adds 256GB of registered ECC capacity at DDR4 3200 speed. The jump is worthwhile when workloads exceed current memory limits or when error correction becomes mandatory for data integrity. Systems already populated with 3200MHz registered ECC RDIMMs gain only capacity, not bandwidth.

DDR4 3200 registered ECC limits

DDR4 3200 registered ECC memory tops out at the 3200MT/s data rate and CL22 latency specified for this kit. Higher frequencies or lower latencies require a different memory generation or platform support not provided by DDR4. The 288-pin RDIMM form factor and 1.2V operation are fixed by the DDR4 standard, so no faster DDR4 registered ECC modules exist for this interface.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,697.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.63 per GB
Cheaper than about 60% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR4 ECC RDIMM Registered Server Memory
Part numberMR25600-744K2
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items256 GB (2 × 128 GB) DDR4 3200 MHz PC4-25600 4Rx4 1.2 V 288-PIN ECC RDIMM KIT

Questions about this item

What slot type and pin count does this 288-pin DDR4 RDIMM require on the ThinkEdge SE450?

The modules use a standard 288-pin DDR4 RDIMM slot; the ThinkEdge SE450 provides these slots for registered ECC memory.

What is the correct order for installing the two 128GB 4Rx4 modules in the ThinkEdge SE450?

Install the first module in the slot designated for channel 0, then the second in the matching channel 1 slot as shown in the server's memory population guide.

How can I verify the ECC function is active after installing this 256GB kit?

Enter the BIOS or use the operating system's memory diagnostic tools; both will report ECC status as enabled when the registered modules are correctly seated.

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