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Green rectangular DDR4 RDIMM module with black chips on both sides gold edge connector no heat spreader

OWC

OWC 128GB DDR4 3200 ECC RDIMM CL22 1.2V 8Rx4 288-pin memory upgrade

SKU CH-RB28-B7BTZ

A 128GB DDR4 3200 ECC registered DIMM for Supermicro server and workstation boards

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latency22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • ECC registered design protects data integrity in servers
  • 128GB single module maximises capacity per slot
  • DDR4 3200 speed with CL22 latency
  • 2V operation reduces power draw
  • Compatible with listed Supermicro motherboards

128GB DDR4 ECC RDIMM for Supermicro servers

This 128GB DDR4 3200 ECC registered DIMM is built for Supermicro motherboards including B12DPE-6, B12DTP-6, B12SPE-CPU-25G, BH12SSi-M25 and H11SSL-i. It targets server and workstation administrators who need maximum single-module capacity. Standard desktop systems cannot use this memory.

Registered ECC with JEDEC compliance

The module implements registered ECC DDR4 at 1.2V with CL22 latency. JEDEC and RoHS compliance ensures a warranty-safe upgrade that meets OEM specifications. Backward compatibility covers 2133, 2400, 2666 and 2933MHz speeds. It cannot be mixed with unbuffered or load-reduced DIMMs.

8Rx4 288-pin 128GB single module

A single 288-pin DIMM delivers the full 128GB at 8Rx4 organisation, removing the need to populate multiple slots for this capacity. Buyers who need lower densities or unbuffered memory should look elsewhere.

How it compares

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

Price $689.99
Pricier than about 56% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
CAS latency 22
Typical for this category: the median of 483 items is 22.
Price per GB $5.39 per GB
Cheaper than about 71% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D48R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latency22
ECC supportYes
Buffer typeRegistered
Memory rank8Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro Motherboard B12DPE-6
Supermicro Motherboard B12DTP-6
Supermicro Motherboard B12SPE-CPU-25G
Supermicro Motherboard BH12SSi-M25
Supermicro Motherboard H11SSL-i

Questions about this item

Will the 128GB DDR4 3200 ECC RDIMM need firmware updates or component swaps over its service life?

No firmware updates or component swaps are required; the module is a solid-state JEDEC-standard part with no moving parts or field-updatable firmware.

What limit appears first when the 8Rx4 registered DIMM runs at 3200 MT/s continuously in a Supermicro B12DPE-6?

The memory controller's maximum supported data rate of 3200 MT/s is the first ceiling; sustained loads cannot exceed this JEDEC-rated speed.

How much heat and power does the 1.2V 288-pin RDIMM produce during all-day operation without a heat spreader?

At 1.2V the module draws minimal power and runs cool enough for standard server airflow; no heat spreader is fitted or required.

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