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Green circuit board DDR3 ECC UDIMM module with black chips and gold contacts

A-Tech

A-Tech 4GB DDR3 1333MHz ECC UDIMM 2Rx8 Server RAM 677035-001 661524-001

SKU CH-HRMQ-3PPNR

4GB DDR3 1333MHz ECC unbuffered DIMM for HP 677035-001 and 661524-001 servers

  • Capacity4GB
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL9
  • Voltage1.50V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • 4GB capacity expands server memory for heavier workloads
  • DDR3 1333MHz PC3-10600 speed matches HP 677035-001 and 661524-001 specs
  • ECC unbuffered design detects and corrects single-bit errors automatically
  • 5V standard voltage keeps power draw within DDR3 limits
  • 240-pin DIMM form factor fits compatible HP server slots

Server DDR3 ECC UDIMM Upgrade

This A-Tech module delivers 4 GB of DDR3 1333 MHz ECC unbuffered memory on a 240-pin DIMM. It operates at the standard 1.5 V and carries a CL9 latency rating. The stick is built as a direct replacement for HP part numbers 677035-001 and 661524-001.

Suited for HP servers needing unbuffered ECC

It fits administrators upgrading or repairing compatible HP server or workstation boards that accept DDR3 unbuffered ECC UDIMMs. It is not for systems that require registered or load-reduced DIMMs, nor for platforms that only support DDR3 registered memory.

DDR3 1333 MHz unbuffered ECC specification

The decisive factor is the combination of DDR3 1333 speed, unbuffered ECC operation and 240-pin DIMM form factor. Verify that your motherboard explicitly lists support for this exact configuration before ordering.

Highlights

  • 4GB capacity expands server memory for heavier workloads
  • DDR3 1333MHz PC3-10600 speed matches HP 677035-001 and 661524-001 specs
  • ECC unbuffered design detects and corrects single-bit errors automatically
  • 5V standard voltage keeps power draw within DDR3 limits
  • 240-pin DIMM form factor fits compatible HP server slots

Specifications

BrandA-Tech
SeriesCompatible Replacement for HP
Model677035-001, 661524-001
Capacity4GB
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL9
Voltage1.50V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Features677035-001, 661524-001

Questions about this item

Does my server need 240-pin DDR3 slots to accept this 4 GB 1333 MHz ECC UDIMM?

Yes, the module is a 240-pin DDR3 DIMM and requires a DDR3 slot that supports ECC unbuffered memory at 1.5 V.

Will this 2Rx8 ECC UDIMM work alongside existing registered DIMMs in the same HP system?

No, unbuffered and registered DIMMs cannot be mixed; all slots must use the same memory type for the system to operate correctly.

How can I confirm the module is running at 1333 MHz with ECC active after installation?

Enter the BIOS or use a system information tool and verify the reported speed shows 1333 MHz and ECC status reads enabled.

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