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Green 240-pin DDR3L server DIMM with gold contacts

A-Tech

A-Tech 8GB DDR3L 1333 ECC RDIMM 2Rx4 server RAM

SKU CH-8KB1-CNMX7

8GB DDR3L 1333 ECC registered DIMM with 2Rx4 organisation and 1.35V low-voltage operation

  • Total capacity8 GB
  • Rated speedDDR3L 1333 (PC3L 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • 8GB DDR3L ECC RDIMM adds registered server memory capacity
  • 1333 MHz PC3L-10600 speed matches DDR3L 1333 system requirements
  • 35 V low voltage reduces power draw in compatible platforms
  • 2Rx4 dual-rank organisation with major-brand chips for registered DIMM stability
  • Replaces HP part numbers including 604506-S21 605313-071 647649-171 647650-07H 647875-B21 664690-001 687460-001 698889-001 731656-081 A0R58A

8GB DDR3L 1333 ECC RDIMM 2Rx4

This is an A-Tech 8GB DDR3L 1333MHz PC3L-10600 ECC Registered DIMM built with major brand chips. It operates at 1.35V low voltage with CL9 latency and a 2Rx4 rank configuration on a 240-pin form factor. The module is designed for server and workstation systems requiring registered error-correcting memory.

Suits HP part numbers listed

This memory replaces HP part numbers including A0R58A, 731656-081, 604506-S21, 664690-001, 698889-001, 647875-B21, 605313-071, 647649-171, 647650-07H and 687460-001. It is not suitable for systems that only accept unbuffered non-ECC UDIMMs. Builders needing different capacities, speeds or voltage specifications should verify their platform requirements before purchase.

Registered ECC with 2Rx4 organization

The single specification that decides fit is the registered ECC RDIMM design with 2Rx4 rank organization. Systems requiring unbuffered UDIMMs, different rank configurations such as 1Rx8 or 2Rx8, or standard 1.5V DDR3 voltage will not support this module. Confirm the motherboard manual specifies DDR3L 1333MHz registered ECC 2Rx4 support.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $29.99
Cheaper than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $3.75 per GB
Cheaper than about 83% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity8 GB
Performance
Rated speedDDR3L 1333 (PC3L 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.35 V

Questions about this item

Does this 1.35 V DDR3L 1333 RDIMM need a server motherboard that supports registered ECC memory?

Yes, the module is a registered ECC RDIMM and requires a server or workstation board with a DDR3L memory controller that accepts registered ECC DIMMs.

Can I mix this 2Rx4 DDR3L 1333 stick with older PC3-10600 non-ECC UDIMMs in the same system?

No, registered ECC RDIMMs cannot be mixed with unbuffered non-ECC UDIMMs; the memory controller must run all slots in registered ECC mode.

After installing the 240-pin module, how do I confirm it is running at DDR3L 1333 with ECC active?

Check the BIOS memory information or run a tool such as CPU-Z; it should show 1333 MHz, 1.35 V, CL9 timings and ECC enabled.

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