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Green circuit board with gold contacts and black memory chips, no heat spreader

OWC

OWC 3R2D48R4128G 128GB DDR4 3200 CL22 8Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade

SKU CH-D6F4-MGB5M

Single 128GB DDR4 3200 CL22 ECC registered RDIMM for Dell PowerEdge R6525, R750, R750xa, R7515 and R7525 servers

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latency22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • 128GB single module maximises server capacity
  • DDR4 3200 CL22 speed handles heavy workloads
  • ECC registered design protects data integrity
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Compatible with PowerEdge R6525 R750 R750xa R7515 R7525

Server memory upgrade

This single 128GB DDR4 3200 module brings ECC registered reliability to compatible Dell PowerEdge servers. The 288-pin RDIMM operates at 1.2V with CL22 latency and an 8Rx4 rank structure. It targets administrators who need maximum capacity per slot in R6525, R750, R750xa, R7515 or R7525 platforms.

Replacing lower-density DIMMs

Swapping smaller registered modules for this 128GB unit frees DIMM slots while keeping JEDEC-standard timings. The upgrade is worthwhile when the workload demands more memory bandwidth than the current population delivers and the platform supports 8Rx4 registered DIMMs. It will not work in systems that require unbuffered or load-reduced memory.

Build integration

The module fits 288-pin DDR4 slots in the listed PowerEdge chassis and runs at 3200, 2933, 2666, 2400 or 2133 MT/s depending on the server configuration. No heat spreader is present, so airflow must meet the server manufacturer’s guidelines. Mixing with unbuffered or load-reduced DIMMs is not supported.

How it compares

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

Price $742.99
Pricier than about 57% 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 $5.80 per GB
Cheaper than about 67% 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 systemsDell PowerEdge R6525
Dell PowerEdge R750
Dell PowerEdge R750xa
Dell PowerEdge R7515
Dell PowerEdge R7525

Questions about this item

Will this 288-pin DDR4 RDIMM fit the memory slots in my Dell PowerEdge R750?

Yes, the module uses the standard 288-pin DDR4 RDIMM form factor required by the R750 and the other listed PowerEdge servers.

What is the correct way to install this 128GB ECC registered module, and what step is often missed?

Power down the server, open the chassis, align the notch on the 288-pin edge connector with the slot key, press firmly until both retention clips click, then verify in BIOS that the 3200MHz speed and ECC registered mode are detected.

When will this 8Rx4 DDR4 3200 module need replacement or maintenance?

The memory itself has no moving parts and requires no scheduled maintenance; replace it only if diagnostics report correctable or uncorrectable ECC errors, or if a future CPU upgrade demands a different speed or rank configuration.

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