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Green 240-pin DDR3 ECC RDIMM module with black chips, no heat spreader

OWC

OWC 8GB DDR3 1600 PC3-12800 CL11 1Rx4 240-pin 1.5V ECC Registered RDIMM Server Memory

SKU CH-YGCA-BBC8Q

8 GB DDR3-1600 ECC registered RDIMM for servers, workstations, NAS and routers

  • Capacity8GB
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes
  • ECC registered design protects data integrity in servers
  • DDR3 1600 PC3-12800 CL11 speed matches HP part numbers 647651081 647651181 647879B21 647899B21 647899B212
  • JEDEC standard 1.5V operation ensures warranty-safe compatibility
  • Single-rank 1Rx4 240-pin RDIMM fits workstation and NAS systems
  • OWC limited lifetime warranty with free tech support included

What this module is and who it fits

This 8 GB DDR3 ECC registered DIMM runs at 1600 MHz with CL11 latency and 1.5 V operation. It is built for workstations, servers, NAS units and routers that require registered memory. Standard desktop PCs cannot use it.

Check your system before ordering

Verify that your platform accepts 240-pin DDR3 registered ECC modules and that the memory controller supports 1Rx4 organisation. Mixing this module with unbuffered DIMMs will prevent boot. Confirm the motherboard or server manual lists PC3-12800 registered memory as supported.

How it fits into a build

The module occupies a single 240-pin DDR3 slot and draws 1.5 V, leaving other slots free for identical registered ECC DIMMs. It replaces HP part numbers 647651081, 647651181, 647879B21, 647899B21 and 647899B212 without requiring voltage changes or BIOS updates beyond standard JEDEC compliance.

Points forts

  • ECC registered design protects data integrity in servers
  • DDR3 1600 PC3-12800 CL11 speed matches HP part numbers 647651081 647651181 647879B21 647899B21 647899B212
  • JEDEC standard 1.5V operation ensures warranty-safe compatibility
  • Single-rank 1Rx4 240-pin RDIMM fits workstation and NAS systems
  • OWC limited lifetime warranty with free tech support included

Caractéristiques

BrandOWC
Part Number1R6D31R408GB
Capacity8GB
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo

Questions sur cet article

What comes in the box and do I need any extra parts to install this 240-pin DDR3 ECC RDIMM?

The module itself is the only item supplied; no cables, brackets or tools are included. Installation requires a compatible server or workstation motherboard with a free 240-pin DDR3 registered DIMM slot — no extra parts are needed beyond that.

How do I decide between the listed HP part numbers 647651081, 647651181, 647879B21, 647899B21 and 647899B212?

All five HP part numbers share the same 8 GB, DDR3-1600, CL11, 1.5 V, 1Rx4 registered ECC specification, so this single OWC module replaces any of them. Choose the part number that matches your server's service manual or the label on the original stick.

What does the PC3-12800 1600 MHz rating mean once the DIMM is running in a server?

The module transfers data at up to 12 800 MB/s per channel at 1600 MHz with CL11 latency, providing error-correcting registered operation for stable workloads in workstations, servers, NAS systems or routers that support DDR3 registered ECC memory.

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