We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular DDR4 memory module with gold contacts and black chips

OWC

OWC 16GB DDR4 2666 ECC RDIMM Lenovo ThinkAgile HX7520 HX7521 HX7820 HX7821 NX2320 memory upgrade

SKU CH-CFM9-EPVCW

16 GB DDR4 2666 ECC registered DIMM for Lenovo ThinkAgile HX and NX servers

  • Capacity16GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 16 GB DDR4 ECC RDIMM for ThinkAgile HX and NX servers
  • 2666 MHz CL19 registered memory keeps data integrity under load
  • 2 V operation reduces power draw in dense racks
  • Backward compatible with 2133 MHz and 2400 MHz platforms
  • Replaces Lenovo part numbers 01AG618 4X70P98202 7X77A01303

System-specific ECC RDIMM for Lenovo ThinkAgile

This 16GB DDR4 2666 CL19 registered DIMM is built for Lenovo ThinkAgile HX7520, HX7521, HX7820, HX7821 and NX2320 servers running Xeon SP Gen 1 processors. It delivers error-correcting, buffered memory for workloads that require data integrity and sustained uptime. The module operates at 1.2V and conforms to the PC4-21300 standard.

Compatibility checks before ordering

Verify that your ThinkAgile chassis lists one of the five supported model numbers and that the memory slots accept 288-pin registered ECC RDIMMs. This memory cannot be mixed with unbuffered DIMMs and will not function in standard desktop or consumer platforms. Confirm the system firmware is current enough to recognise 2Rx8 16GB modules at 2666MHz.

Replaces Lenovo 01AG618 4X70P98202 7X77A01303

The module directly replaces Lenovo part numbers 01AG618, 4X70P98202 and 7X77A01303. It is a worthwhile jump when expanding capacity beyond the factory configuration or when refreshing older 2133MHz and 2400MHz DIMMs to a uniform 2666MHz speed across all channels. Builders who need unbuffered memory or higher-density modules should look elsewhere.

Highlights

  • 16 GB DDR4 ECC RDIMM for ThinkAgile HX and NX servers
  • 2666 MHz CL19 registered memory keeps data integrity under load
  • 2 V operation reduces power draw in dense racks
  • Backward compatible with 2133 MHz and 2400 MHz platforms
  • Replaces Lenovo part numbers 01AG618 4X70P98202 7X77A01303

Specifications

BrandOWC
Part Number2R6D42R816GB
Capacity16GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkAgile (Xeon SP Gen 1) HX7520
Lenovo ThinkAgile (Xeon SP Gen 1) HX7521
Lenovo ThinkAgile (Xeon SP Gen 1) HX7820
Lenovo ThinkAgile (Xeon SP Gen 1) HX7821
Lenovo ThinkAgile (Xeon SP Gen 1) NX2320

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the module ship as a single 16GB stick or do I need to order a kit?

The listing is for one 16GB DDR4 2666 ECC RDIMM module; add multiple units to reach your desired capacity.

Should I choose the 2666MHz CL19 version or a lower-speed alternative for my ThinkAgile HX7520?

The 2666MHz CL19 module is the specified speed; it also runs at 2400MHz and 2133MHz if the system requires it.

What does the 2666MHz PC4-21300 rating deliver in a live ThinkAgile HX7821 server?

It provides 2666 MT/s bandwidth at CL19 latency with ECC error correction for registered server workloads.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.