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Four green DDR3 RDIMM modules with gold contacts and black chips, no heat spreaders

OWC

OWC 64GB (4x16GB) DDR3 1333 ECC Registered RDIMM memory upgrade

SKU CH-XH9Q-JMYF2

A 64GB kit of four 16GB DDR3 1333 ECC registered RDIMMs for HP ProLiant SL165s G7, SL170s G6, SL335s G7, SL390s G7 and WS460c G6 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)

  • 64 GB total capacity from four 16 GB modules
  • DDR3 1333 speed with CL9 latency for stable throughput
  • ECC registered design detects and corrects data errors
  • 5 V operation matches JEDEC server specifications
  • Validated for HP ProLiant SL and WS server platforms

ECC Registered RDIMM kit for HP ProLiant servers

This 64 GB kit contains four 16 GB DDR3 1333 PC3-10600 CL9 registered DIMMs. It is built for HP ProLiant SL165s G7, SL170s G6, SL335s G7, SL390s G7 and WS460c G6 systems that require ECC registered memory. The modules run at 1.5 V and use a 240-pin form factor. Standard desktop computers cannot use this memory.

JEDEC and RoHS compliant modules

Each module meets JEDEC specifications and is RoHS compliant, so the upgrade keeps the original system warranty intact. The registered design adds a buffer that reduces electrical load on the memory controller, allowing higher capacities in supported servers. Mixing these registered DIMMs with unbuffered memory is not supported and will prevent the system from booting.

Simple DIMM installation with seating checks

Installation follows the normal DIMM slot procedure: align the notch, press firmly until the retention clips click, and verify the module sits evenly. The most common issue is incomplete seating, which causes the server to report memory errors or fail POST. Because the kit is validated for the listed ProLiant models, no BIOS update or manual configuration is normally required.

How it compares

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

Price $188.99
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 $2.95 per GB
Cheaper than about 90% 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 SL165s G7
HP ProLiant SL170s G6
HP ProLiant SL335s G7
HP ProLiant SL390s G7
HP ProLiant WS460c G6

Other versions of this model

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Questions about this item

Will the 1.5V DDR3 modules need replacement sooner than lower-voltage memory?

The kit runs at the standard 1.5V for DDR3 1333; no higher voltage is applied, so replacement timing matches normal server DIMM life.

What limit appears first when the 2Rx4 registered DIMMs run continuously at 1333 MT/s?

The memory controller’s maximum supported capacity and rank-per-channel limit will be reached before the modules themselves throttle.

How much heat and noise do the four 16GB sticks add when the server runs all day?

No heat spreaders are fitted, so the DIMMs rely on chassis airflow; they add negligible acoustic noise and only modest thermal load.

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