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Green 240-pin DDR3 server DIMM with black chips, ECC LRDIMM label

A-Tech

A-Tech 32GB DDR3 1866 ECC LRDIMM 4Rx4 HP 708643-B21 Server RAM

SKU CH-XYAE-WK5KY

32 GB DDR3 1866 ECC LRDIMM module replaces HP part 708643-B21 for server upgrades

  • Capacity32GB
  • SpeedDDR3 1866 (PC3 14900)
  • CAS LatencyCL13
  • Voltage1.50V
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • 32GB capacity supports larger server workloads
  • DDR3 1866MHz speed delivers PC3-14900 bandwidth
  • ECC LRDIMM design corrects errors and reduces electrical load
  • 4Rx4 rank organisation with major-brand chips
  • 240-pin DIMM fits HP 708643-B21 compatible systems

Server memory upgrade

This A-Tech module adds 32GB of DDR3 1866 ECC LRDIMM capacity to compatible HP servers. The single 240-pin DIMM uses a 4Rx4 load-reduced design that eases electrical load on the memory bus. It operates at standard 1.50V DDR3 voltage with CL13 latency. Systems requiring registered ECC memory can use this part to expand total RAM.

DDR3 1866 interface limits

The DDR3 1866 (PC3-14900) standard caps transfer rates at 1866 MT/s and requires a 240-pin DIMM slot wired for DDR3 signalling. Load-reduced ECC modules only function on platforms whose memory controller supports the LRDIMM protocol and registered operation. Mixing this module with standard RDIMMs or UDIMMs will prevent the system from booting. Maximum density per channel depends on the specific server generation.

32GB 4Rx4 capacity per slot

Each module delivers 32GB in a quad-rank 4Rx4 organisation, so the total memory added is determined by how many slots the server can populate with LRDIMMs. Builders who need more storage than a single slot provides must verify the platform's maximum supported LRDIMM count. Buyers who want non-ECC or standard RDIMM memory cannot use this part.

Points forts

  • 32GB capacity supports larger server workloads
  • DDR3 1866MHz speed delivers PC3-14900 bandwidth
  • ECC LRDIMM design corrects errors and reduces electrical load
  • 4Rx4 rank organisation with major-brand chips
  • 240-pin DIMM fits HP 708643-B21 compatible systems

Caractéristiques

BrandA-Tech
Capacity32GB
SpeedDDR3 1866 (PC3 14900)
CAS LatencyCL13
Voltage1.50V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Questions sur cet article

Should I choose the single 32 GB module or add multiple sticks to reach my target capacity?

This listing is a single 32 GB module. Add as many modules as your server has free 240-pin DDR3 slots and the memory controller supports.

What does the 1866 MHz PC3-14900 rating deliver once the module is installed in a server?

It provides a peak transfer rate of 14 900 MB/s at 1866 MT/s with CL13 latency, running at the standard 1.5 V DDR3 voltage.

How does the ECC LRDIMM 4Rx4 design affect the memory subsystem?

Load Reduced buffering cuts electrical load on the memory bus, ECC corrects single-bit errors, and the 4Rx4 organisation packs 32 GB into one 240-pin DDR3 DIMM.

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