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Green DDR3 DIMM with black chips and gold contacts

Axiom

Axiom 647877-B21-AX 8GB DDR3-1333 ECC RDIMM 1.35V server RAM

SKU CH-XEBZ-A4DQZ MPN 647877-B21-AX

8 GB DDR3-1333 ECC registered DIMM running at 1.35 V for HP Gen 8 servers

  • SpeedDDR3 SDRAM
  • ECCECC
  • Buffered/RegisteredRegistered
  • 8 GB capacity supports demanding server workloads
  • DDR3-1333 speed delivers 1333 MHz data rates
  • 35 V low-voltage operation reduces power draw
  • ECC registered design protects data integrity
  • 5 mil slim profile fits dense DIMM slots

Axiom 8GB DDR3-1333 ECC RDIMM

This Axiom module is an 8 GB DDR3-1333 registered DIMM built for HP Gen 8 servers. It delivers error-correcting code protection and registered signal processing for stable operation in multi-socket platforms. The low-voltage design runs at 1.35 V to reduce power draw in dense memory configurations. It is intended for administrators upgrading or repairing supported enterprise systems.

1.35 V low-voltage DDR3-1333 specification

The single specification that decides fitment is the 1.35 V DDR3-1333/PC3-10600 standard combined with ECC and registered buffering. Modules at 1.5 V or unbuffered UDIMMs will not operate correctly in the target platforms. Verify the server memory list requires this exact voltage and registered organisation before ordering.

Straightforward DIMM installation

Installation follows the standard DIMM slot procedure: align the notch, press evenly until the latches engage, then confirm detection in BIOS. The 157.5 mil thickness matches the Gen 8 slot clearance. The most common issue is mixing registered and unbuffered modules or populating slots in an unsupported sequence, which prevents the system from posting.

Highlights

  • 8 GB capacity supports demanding server workloads
  • DDR3-1333 speed delivers 1333 MHz data rates
  • 35 V low-voltage operation reduces power draw
  • ECC registered design protects data integrity
  • 5 mil slim profile fits dense DIMM slots

Specifications

BrandAxiom
SpeedDDR3 SDRAM
ECCECC
Buffered/RegisteredRegistered
Shipping weight2.27 kg
Package size127 × 127 × 127 mm

Questions about this item

What does the 1333 MHz DDR3-1333/PC3-10600 rating mean once the module is installed in a server?

The module runs at 1333 MHz, delivering up to 10600 MB/s bandwidth per channel when the memory controller operates at that speed.

How does the registered DDR3 interface affect what the memory controller can do?

The registered signal processing places a register between the DRAM and the controller, reducing electrical load so more modules can be populated per channel without exceeding timing limits.

Will the 157.5 mil thick DIMM fit in a standard HP Gen 8 server memory slot?

Yes, the 157.5 mil (approximately 4 mm) thickness matches the standard DDR3 DIMM form factor used in HP Gen 8 memory slots.

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