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Green 288-pin DDR4 RDIMM module with black chips

Brute Networks

Brute Networks 8GB DDR4-2133 1Rx4 CL15 1.2V Registered RDIMM 46W0788

SKU CH-5RFJ-85JBW

8 GB registered DDR4 server module with ECC, CL15 latency and 1.2 V operation for IBM System x3550 M5 compatibility

  • Total capacity8 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 8GB capacity expands server memory headroom
  • Registered DDR4-2133 signal processing improves system stability
  • ECC error correction protects critical data integrity
  • 2V operation reduces power consumption per module
  • Compatible with IBM System x3550 M5 (5463) server

8GB Registered DDR4 RDIMM for IBM System x3550 M5

This 8 GB DDR4-2133 registered DIMM uses a 1Rx4 layout and runs at 1.20 V with CL15 latency. It is built as a 100 % IBM-compatible module for servers that require registered ECC memory. The 288-pin form factor matches the memory slots in the System x3550 M5 (5463). Buyers who need higher-density modules or unbuffered memory for workstation boards cannot use this part.

Sustained operation at 2133 MHz

Registered buffering reduces electrical load on the memory controller during continuous workloads, helping stability in multi-DIMM server configurations. The 1.20 V operating voltage limits heat output while the CL15 timing delivers predictable latency for virtualization and database tasks. ECC correction protects data integrity during long-running jobs. Systems that demand higher frequencies or lower latencies will not reach those targets with this module.

Straightforward 288-pin installation in supported

The DIMM measures 5.3 inches in length and 150 mil thickness, fitting the standard DDR4 slots in the validated System x3550 M5 chassis. Alignment notches prevent backward insertion, and the registered design requires no extra configuration in compatible BIOS. Builders using consumer motherboards or platforms that do not support registered ECC will find the module unusable.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $71.99
Cheaper than about 77% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $9.00 per GB
Pricier than about 63% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameIBM
Total capacity8 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V

Questions about this item

How much power does the 1.2 V registered DIMM draw during continuous server operation?

The module runs at 1.20 V, the standard DDR4 voltage, which keeps power draw low during all-day workloads.

What motherboard slot and firmware support are required for this 288-pin DDR4-2133 RDIMM?

A server board with 288-pin DDR4 slots that accepts registered ECC memory and can run at 2133 MHz CL15.

Will this 1Rx4 CL15 stick work alongside older DDR4 modules in an IBM System x3550 M5?

Yes, it is validated for the x3550 M5 (5463) and will operate at the system’s supported speed when mixed with compatible DDR4 RDIMMs.

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