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Green 240-pin DDR3 DIMM with silver heatsink and black chips

A-Tech

A-Tech 16GB DDR3 1600 ECC RDIMM 2Rx4 HP 672631-S21 684316-181 687465-001 Server Memory

SKU CH-GYS0-W4CSK

16 GB DDR3 1600 ECC registered DIMM with 2Rx4 organisation for HP server upgrades

  • Total capacity16 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • 16GB capacity lets servers handle larger workloads
  • DDR3 1600MHz speed improves data throughput for demanding applications
  • ECC registered design detects and corrects memory errors automatically
  • 2Rx4 dual-rank layout increases memory density per slot
  • 5V standard voltage ensures broad server compatibility

A-Tech 16GB DDR3 1600 ECC RDIMM

This 16GB A-Tech module runs at DDR3 1600 (PC3-12800) with CL11 latency and 1.50V operation. It is a registered ECC DIMM built with major-brand chips for server and workstation reliability. The 240-pin form factor fits compatible HP systems listed by part number.

For registered ECC server upgrades only

Suits administrators replacing HP part numbers 672631-S21, 684316-181 or 687465-001 in supported platforms. Builders needing unbuffered UDIMM memory or non-ECC modules for desktop boards cannot use this registered DIMM. Systems limited to lower densities per slot should verify maximum capacity before ordering.

DDR3 1600 registered ECC with 2Rx4 organisation

The single decisive specification is the registered ECC DDR3 1600 interface combined with a 2Rx4 rank configuration. Only motherboards that explicitly support registered ECC DDR3 at this speed and rank structure will accept the module. Verify the platform memory specification before purchase.

How it compares

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

Price $27.99
Cheaper than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $1.75 per GB
Cheaper than about 94% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity16 GB
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.5 V

Questions about this item

What DDR3 speed and ECC type must the server already support for this 1600 MHz PC3-12800 ECC RDIMM to work?

The server must support DDR3 1600 (PC3-12800) registered ECC memory at 1.5 V; mixing with slower DDR3 will force the bus to the lowest common speed.

Can this 2Rx4 registered ECC module run alongside existing 1Rx4 or 2Rx8 registered ECC DIMMs in the same channel?

Yes, provided all modules are registered ECC at 1.5 V; the memory controller will train each rank at the lowest populated speed and latency.

After installation, how can I confirm the module is running at 1600 MHz with ECC active?

Check the BIOS memory information screen or run a tool such as dmidecode to verify speed shows 1600 MT/s, type shows Registered (ECC), and voltage reads 1.5 V.

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