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Four green DDR3 ECC RDIMM modules in anti-static tray

OWC

OWC 64GB (4x16GB) DDR3 1333 PC3-10600 CL9 2Rx4 240-pin 1.5V ECC Registered RDIMM memory upgrade

SKU CH-R7R1-BA5H3

Four 16 GB DDR3 1333 ECC registered DIMMs for HP ProLiant DL585 G7, ML370 G6, SL160s G6 and SL160s G7 servers

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB (4 x 16GB)

  • ECC registered design protects data integrity in servers
  • 64 GB kit (4 × 16 GB) expands memory capacity
  • DDR3 1333 PC3-10600 CL9 matches qualified HP ProLiant specs
  • 5 V JEDEC-standard modules ensure warranty-safe upgrades
  • Validated for HP ProLiant DL585 G7 ML370 G6 SL160s G6 SL160s G7

Server-grade DDR3 kit

This OWC kit supplies 64 GB of DDR3 1333 ECC registered memory in four 16 GB modules. It targets administrators maintaining HP ProLiant DL585 G7, ML370 G6, SL160s G6 or SL160s G7 servers. The registered design and error-correcting code suit workloads that demand data integrity over raw speed. Standard desktop boards cannot use these modules.

Build integration

Each 240-pin RDIMM runs at 1.5 V with CL9 latency and a 2Rx4 organisation. The kit plugs directly into the supported ProLiant slots without adapters or configuration changes. Because the modules are registered and ECC, they must not be mixed with unbuffered memory in the same system. The upgrade frees the existing DIMM population for redeployment or spare inventory.

Upgrade context

The kit replaces smaller or slower DDR3 sets in the listed ProLiant generations, raising total capacity to 64 GB across four slots. The jump is worth it when virtualisation, database caching or multi-tenant workloads exceed the current memory ceiling. Servers already running mixed-rank or non-ECC modules cannot benefit without a full swap.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $178.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $2.80 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R3D32R4064S
Total capacity64 GB (4 × 16 GB)
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHP ProLiant DL585 G7
HP ProLiant ML370 G6
HP ProLiant SL160s G6
HP ProLiant SL160s G7

Other versions of this model

5 more in the same range

Questions about this item

How does the CL9 latency at DDR3 1333 speed affect throughput when the server runs at full load?

CL9 at 1333 MHz sets the baseline timing for each memory cycle; lower latency would improve response but this kit matches the JEDEC standard for the rated speed.

Will the registered ECC modules run hotter or draw more power than unbuffered DIMMs during continuous operation?

Registered DIMMs add a small buffer load, but at 1.5 V and without heat spreaders they stay within normal DDR3 thermal limits for server chassis airflow.

Which HP ProLiant models must I already own for this 4 x 16 GB kit to be compatible?

The kit is validated for HP ProLiant DL585 G7, ML370 G6, SL160s G6 and SL160s G7 servers.

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