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Green 240-pin DDR3L server DIMM with black chips and gold contacts

A-Tech

A-Tech 16GB DDR3L 1333 ECC RDIMM 2Rx4 HP 647653-081 647881-B21 647883-S21 687463-001 Server RAM

SKU CH-238R-YTWBM

16 GB DDR3L 1333 ECC registered DIMM, 2Rx4, 1.35 V, 240-pin, compatible with HP part numbers 647653-081, 647881-B21, 647883-S21, 687463-001

  • Capacity16GB
  • SpeedDDR3L 1333 (PC3L 10600)
  • CAS LatencyCL9
  • Voltage1.35V
  • ECCYes
  • Buffered/RegisteredRegistered
  • 16 GB capacity expands server memory for heavier workloads
  • DDR3L 1333 MHz speed matches HP system specifications
  • ECC registered design corrects data errors in critical applications
  • 35 V low voltage reduces power draw and heat
  • 240-pin 2Rx4 module fits HP part numbers 647653-081, 647881-B21, 647883-S21, 687463-001

16GB DDR3L ECC RDIMM for HP Servers

This A-Tech module delivers 16GB of DDR3L 1333 memory with ECC and registered buffering. It operates at 1.35V with a CL9 latency and a 2Rx4 rank configuration. The 240-pin DIMM is built as a direct replacement for HP part numbers 647653-081, 647881-B21, 647883-S21 and 687463-001. It targets administrators upgrading compatible HP server or workstation platforms.

Suited for ECC registered DDR3L slots only

This module fits systems that require registered ECC DDR3L DIMMs at the 1333 speed grade. It will not work in platforms that accept only unbuffered UDIMMs, non-ECC memory, or different DDR generations. Builders needing higher densities per slot, faster DDR3 speeds, or consumer-grade memory should select a different product.

2Rx4 registered ECC at 1.35V

The 2Rx4 organisation and registered ECC design are the decisive compatibility factors for the target HP platforms. The module uses major-brand chips tested to PC3L-10600 specifications. Verify that your system's memory list includes these exact electrical and mechanical characteristics before ordering.

Points forts

  • 16 GB capacity expands server memory for heavier workloads
  • DDR3L 1333 MHz speed matches HP system specifications
  • ECC registered design corrects data errors in critical applications
  • 35 V low voltage reduces power draw and heat
  • 240-pin 2Rx4 module fits HP part numbers 647653-081, 647881-B21, 647883-S21, 687463-001

Caractéristiques

BrandA-Tech
Capacity16GB
SpeedDDR3L 1333 (PC3L 10600)
CAS LatencyCL9
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Questions sur cet article

What does the PC3L-10600 rating limit in real use?

The PC3L-10600 rating caps the module at 1333 MT/s and CL9 timing, so the server will run it at that speed even if the platform supports faster DDR3L.

What physical slot and keying does this 240-pin DDR3L RDIMM need?

It requires a standard 240-pin DDR3 DIMM slot with the DDR3 key notch; the registered design adds a register chip but does not change the physical connector.

How is the 2Rx4 ECC RDIMM installed, and what step is often missed?

Align the notch, press firmly until both ejector clips click shut, then verify in BIOS that the channel shows 16 GB at 1.35 V with ECC active — skipping the BIOS check is the common mistake.

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