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Green 288-pin DDR4 ECC registered DIMM module without heat spreader

OWC

OWC 16GB DDR4 2666MHz CL19 ECC Registered RDIMM 2Rx8 Lenovo ThinkAgile Xeon SP Gen 1

SKU CH-MG40-XH9HW

16GB DDR4 2666MHz ECC registered RDIMM for Lenovo ThinkAgile Xeon SP Gen 1 servers

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • 16 GB DDR4 2666 MHz CL19 capacity for server workloads
  • ECC registered design detects and corrects single-bit errors
  • 2 V operation reduces power draw in dense configurations
  • 2Rx8 dual-rank organisation boosts memory density per slot
  • Validated for Lenovo ThinkAgile Xeon SP Gen 1 NX3321 VX 1U VX2320 VX3320 VX3520-G

Lenovo ThinkAgile Xeon SP Gen 1 memory

This 16GB DDR4 2666MHz CL19 ECC Registered RDIMM is built for the Lenovo ThinkAgile Xeon SP Gen 1 platforms NX3321, VX 1U, VX2320, VX3320 and VX3520-G. It operates at 1.2V on a 288-pin interface with a 2Rx8 rank structure. The module replaces Lenovo part numbers 01AG618, 4X70P98202 and 7X77A01303. It is not compatible with standard desktop computers or unbuffered memory configurations.

Sustained server workload behaviour

ECC registered operation detects and corrects single-bit errors during continuous duty, protecting data integrity in virtualised and database tasks. The CL19 latency and 2666MHz speed maintain stable throughput under load, while backward compatibility with 2133MHz and 2400MHz systems allows deployment in mixed-speed channels. JEDEC and RoHS compliance ensure consistent electrical behaviour over time.

Upgrade path from older DDR4 RDIMMs

This module upgrades systems currently running lower-capacity or slower DDR4 ECC registered DIMMs within the supported ThinkAgile Xeon SP Gen 1 family. The jump is worth it when expanding memory capacity per slot or when replacing failed modules with a validated 16GB part. Buyers who need unbuffered memory or desktop compatibility cannot use this product.

How it compares

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

Price $101.99
Cheaper than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.37 per GB
Cheaper than about 62% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2R6D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

How much power does the 1.2 V DDR4 2666 MHz CL19 module draw when running all day in a ThinkAgile server?

The module operates at 1.2 V and complies with JEDEC DDR4 specifications; exact power draw depends on the server workload and platform power management.

Which Lenovo ThinkAgile models must I already own for this 288-pin ECC registered RDIMM to work?

It is validated for ThinkAgile Xeon SP Gen 1 systems NX3321, VX 1U, VX2320, VX3320 and VX3520-G and replaces Lenovo part numbers 01AG618, 4X70P98202 and 7X77A01303.

Can I mix this 2Rx8 ECC registered stick with older 2133 MHz or 2400 MHz unbuffered DIMMs in the same server?

No — registered ECC memory cannot be mixed with unbuffered memory; the module is backward-compatible with 2133 MHz and 2400 MHz registered speeds only.

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