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Green 240-pin DDR3L ECC registered RDIMM module with black chips, no heat spreader

OWC

OWC 8GB DDR3L 1600 CL11 1Rx4 240-pin 1.35V ECC Registered RDIMM 1R6T31R408GB

SKU CH-7991-NAVRD

8GB DDR3L 1600 ECC registered RDIMM for HP ProLiant BL465c G7 and DL980 G7 servers

  • Capacity8GB
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCYes

Capacity 8GB

  • ECC registered design protects data integrity in servers
  • DDR3L 1600 CL11 delivers reliable 1.35 V performance
  • Single 8 GB 1Rx4 module simplifies capacity upgrades
  • 240-pin RDIMM fits HP ProLiant BL465c G7 and DL980 G7
  • Replaces HP part numbers 731765B21 and 735302001

Server-grade DDR3L ECC RDIMM

This 8 GB DDR3L registered DIMM runs at 1600 MHz with CL11 latency and 1.35 V operation. It is built for HP ProLiant BL465c G7 and DL980 G7 servers that require ECC registered memory. The module uses a 1Rx4 organisation and a standard 240-pin form factor.

Sustained load behaviour

ECC registered architecture corrects single-bit errors and reduces electrical load on the memory controller during continuous operation. The 1.35 V DDR3L voltage lowers power draw compared with standard DDR3, helping thermal stability in densely populated server chassis over long periods.

Installation notes

Insert the module into an available 240-pin DDR3 slot on the supported ProLiant models; the registered buffer means it cannot be mixed with unbuffered DIMMs. The lack of a heat spreader keeps the profile low but offers no extra cooling, so adequate chassis airflow is required. This memory will not work in standard desktop or consumer laptop platforms.

Highlights

  • ECC registered design protects data integrity in servers
  • DDR3L 1600 CL11 delivers reliable 1.35 V performance
  • Single 8 GB 1Rx4 module simplifies capacity upgrades
  • 240-pin RDIMM fits HP ProLiant BL465c G7 and DL980 G7
  • Replaces HP part numbers 731765B21 and 735302001

Specifications

BrandOWC
Part Number1R6T31R408GB
Capacity8GB
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemHP ProLiant BL465c G7
HP ProLiant DL980 G7

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Questions about this item

How much heat does the 1.35 V DDR3L module generate when the server runs continuously?

At 1.35 V the DDR3L RDIMM draws less power than standard 1.5 V DDR3, so it produces less heat during all-day operation in the ProLiant BL465c G7 or DL980 G7.

What must the HP ProLiant already have for this 240-pin ECC RDIMM to function?

The server needs free 240-pin DDR3L registered DIMM slots and a BIOS that supports ECC registered memory; it cannot accept unbuffered modules.

Will this 1Rx4 CL11 stick work alongside the original HP 731765B21 modules still installed?

Yes, it replaces HP part numbers 731765B21, 731765B211 and 735302001, so it matches the existing registered ECC specification for mixed population.

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