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Four green DDR3 RDIMM modules in static bags

OWC

OWC 128GB (4x32GB) DDR3 1333 PC3-10600 CL9 ECC Registered RDIMM Memory Upgrade Kit

SKU CH-8BEX-77H0F

128 GB DDR3-1333 ECC registered quad-rank kit of four 32 GB modules for select HP ProLiant servers

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity across four 32 GB modules
  • DDR3 1333 MHz speed with CL9 latency for responsive server workloads
  • ECC registered design detects and corrects data errors in critical applications
  • 5 V operation matches JEDEC standard for reliable compatibility
  • Validated for HP ProLiant DL585 G7, ML370 G6, SL160s G6 and SL160s G7

128GB DDR3 ECC Registered Kit

This OWC kit provides 128GB of DDR3 1333 PC3-10600 ECC Registered memory in four 32GB modules. It uses 240-pin RDIMMs rated at CL9 latency and 1.5V. The modules are designed for specific HP ProLiant server platforms including the DL585 G7, ML370 G6, SL160s G6 and SL160s G7.

Server administrators expanding capacity

This memory suits administrators upgrading compatible HP ProLiant servers to the maximum supported capacity with matched modules. It is not for desktop PC owners, as registered ECC RDIMMs are physically and electrically incompatible with standard consumer motherboards. Builders needing unbuffered memory or a different DDR generation must select another product.

4Rx4 registered organisation

Each 32GB module uses a 4Rx4 rank configuration, which determines how the memory controller addresses the chips. This organisation must match the server's memory population rules for the system to recognise the full 128GB capacity.

How it compares

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

Price $306.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $2.40 per GB
Cheaper than about 92% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R3D34R4128S
Total capacity128 GB (4 × 32 GB)
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
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

Does my HP ProLiant server need a specific BIOS revision or firmware update before I install these 4Rx4 registered DIMMs?

The modules follow JEDEC-standard DDR3 1333 timing and 1.5 V operation, so they work with the factory firmware on the listed DL585 G7, ML370 G6 and SL160s G6/G7 platforms.

Can I keep my existing unbuffered DDR3 sticks and add this 128 GB kit to the same server?

No, registered ECC RDIMMs cannot be mixed with unbuffered memory; all slots must use registered modules for the system to POST.

How do I verify the full 128 GB is recognised and ECC is active after installation?

Check the POST memory count or BIOS system information screen — it should show 128 GB total across four 32 GB DIMMs with ECC enabled.

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