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

OWC

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

SKU CH-J3AP-MMJNH

A single 128GB DDR4 3200 CL22 8Rx4 288-pin ECC registered RDIMM for Supermicro A+ Server 2014TP-HTR, 2024S-TR, 2024US-TNR, 2024US-TRT and 2114GT-DNR

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latency22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • Maximise server capacity with a single 128GB module
  • ECC registered design protects data integrity in critical workloads
  • JEDEC-standard DDR4 3200 CL22 at 1.2V ensures broad compatibility
  • Qualified for Supermicro A+ Server 2014TP-HTR 2024S-TR 2024US-TNR 2024US-TRT 2114GT-DNR
  • Backward compatible with 2133 2400 2666 2933MHz systems

Server-grade capacity

This single 128GB DDR4 3200 ECC registered RDIMM is built for Supermicro A+ Server platforms including the 2014TP-HTR, 2024S-TR, 2024US-TNR, 2024US-TRT and 2114GT-DNR. It delivers 128GB in one 288-pin module running at 1.2V with CL22 latency. The 8Rx4 organisation and registered buffer target multi-socket workstations and NAS systems that require error-correcting memory.

Upgrade path and mixing limits

The module replaces slower DDR4 DIMMs and is backward compatible with 2133, 2400, 2666 and 2933MHz bus speeds. It cannot be mixed with unbuffered or load-reduced ECC memory, so buyers upgrading a populated chassis must match the registered type across all slots. The jump is worthwhile when the platform supports registered DIMMs and the workload needs maximum per-slot density.

DDR4 registered constraints

As a JEDEC-standard DDR4 registered DIMM, it fits only platforms wired for registered signalling and 288-pin DDR4 slots. Standard desktop motherboards and consumer laptops cannot use this memory. The 1.2V operating voltage follows the DDR4 specification, but the registered buffer and ECC logic prevent installation in systems that expect unbuffered modules.

How it compares

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

Price $776.99
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 $6.07 per GB
Cheaper than about 65% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

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 A+ Server 2014TP-HTR
Supermicro A+ Server 2024S-TR
Supermicro A+ Server 2024US-TNR
Supermicro A+ Server 2024US-TRT
Supermicro A+ Server 2114GT-DNR

Questions about this item

Will the 288-pin DDR4 ECC RDIMM fit the memory slots on a Supermicro A+ Server 2024S-TR?

Yes, the 288-pin form factor matches the DDR4 RDIMM slots on the listed Supermicro A+ Server models.

What is the correct seating procedure for this 128GB 8Rx4 registered module, and what step is often missed?

Align the notch with the slot key, press firmly until both retention clips click, then verify the module height sits flush with neighbouring DIMMs.

When should this JEDEC-standard 1.2V ECC registered DIMM be replaced in a 24/7 server workload?

Replace if the system logs corrected ECC errors that climb steadily, or after a firmware update that changes the qualified memory list.

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