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Green rectangular memory module with gold edge connectors and black chips

Brute Networks

Brute Networks 4X71M22551 128GB DDR5 4800 4Rx4 ECC Registered RDIMM server RAM

SKU CH-DT9P-QJ5TY

128GB DDR5-4800 ECC registered server memory module for Lenovo-compatible systems

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • Buffer typeRegistered
  • 128 GB capacity handles heavy server workloads
  • DDR5 4800 speed delivers high data throughput
  • 4Rx4 ECC registered design protects data integrity
  • Lenovo 4X71M22551 equivalent ensures direct compatibility
  • Lifetime warranty backs long-term reliability

Server memory for Lenovo systems

Brute Networks 4X71M22551 is a 128GB DDR5 module built to match Lenovo part number 4X71M22551. It targets administrators who need high-capacity registered ECC memory for compatible Lenovo servers. The module runs at 4800 MT/s with a PC5-38400 rating.

Registered ECC build with major-brand chips

The 4Rx4 registered design adds a buffer that reduces electrical load on the memory controller, allowing dense population in multi-socket servers. Major-brand chipsets are used throughout, and the module is 100 percent Lenovo compatible to preserve factory warranty coverage. Identically matched modules ship together for consistent performance across all slots.

DDR5-4800 speed ceiling and registered latency

The DDR5-4800 interface caps peak bandwidth at the PC5-38400 level, so workloads that scale beyond this throughput will hit a hard limit. Registered operation adds one cycle of latency versus unbuffered modules, which affects latency-sensitive code paths. The 4Rx4 organisation also restricts maximum rank-per-channel counts on some platforms.

How it compares

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

Price $3,971.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $31.03 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameLenovo
Total capacity128 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeRegistered

Questions about this item

What does the DDR5 4800 PC5-38400 rating cap in practice?

The module runs at up to 4800 MT/s with a peak bandwidth of 38400 MB/s; actual throughput is limited by the server's memory controller and the number of populated channels.

What physical slot and form factor does this 128GB 4Rx4 RDIMM require?

It fits a standard DDR5 RDIMM slot; the 4Rx4 organisation means each module presents four logical ranks to the memory controller.

How is the module installed and what step is often missed?

Align the key notch with the slot, press firmly until both ejector clips lock, then verify in BIOS that all 128GB are recognised at 4800 MT/s with ECC active.

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