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Green rectangular DDR5 server memory module with black chips and gold contacts, no heat spreader

A-Tech

A-Tech 96GB DDR5 6400 ECC RDIMM 2Rx4 Server RAM

SKU CH-X5CS-4RJXQ

A 96 GB DDR5 6400 ECC registered DIMM with 2Rx4 organisation and 1.10 V operation

  • Total capacity96 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor Brand Chipset
  • CAS latency32
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 96 GB capacity handles large server workloads
  • DDR5 6400 speed delivers high memory bandwidth
  • ECC registered design protects data integrity
  • 2Rx4 dual-rank layout increases memory density
  • 1 V DDR5 standard voltage reduces power draw

96GB DDR5 ECC RDIMM for HP/HPE servers

This 96GB DDR5 6400 ECC RDIMM module is built for HP/HPE server and workstation systems that require registered memory with error correction. It suits administrators expanding capacity in platforms validated for the P64987-B21, P65249-001 and P69722-1B1 part numbers.

288-pin registered DIMM at 1.10V

The module plugs into a standard 288-pin DDR5 RDIMM slot and operates at the DDR5 baseline voltage of 1.10V. Registered buffering reduces electrical load on the memory controller, freeing the platform to populate multiple slots per channel without exceeding drive limits.

Major-brand DRAM ICs with lifetime warranty

Each stick uses major-brand DRAM ICs and undergoes quality-assurance testing before shipment. The bundle includes only the single memory module; no heat spreader, cables or software are supplied.

How it compares

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

Price $2,819.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 96 GB
Higher than about 85% of the 6,064 comparable items (median 32 GB).
CAS latency 32
Lower than about 74% of the 439 comparable items (median 40).
Price per GB $29.37 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for HP/HPE P64987-B21 P65249-001 P69722-1B1
Model nameA-Tech 96 GB DDR5-6400 ECC RDIMM Server RAM Module
Total capacity96 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency32
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Will the 1.10 V voltage limit throttle this 6400 MHz module under sustained server workloads?

The module operates at the standard DDR5 voltage of 1.10 V; as long as the platform supplies that voltage within spec, the memory will maintain its rated 6400 MHz speed without voltage-related throttling.

How much heat does a 96 GB 2Rx4 RDIMM produce when running 24/7, and does it need active cooling?

This module has no heat spreader; it relies on the server's chassis airflow across the 288-pin DIMM slots, which is typical for registered ECC DDR5 in properly ventilated rack systems.

My HP server needs P64987-B21 — does this A-Tech stick work without any other parts?

Yes, the module is a direct replacement for HP/HPE part numbers P64987-B21, P65249-001 and P69722-1B1; it requires only a compatible DDR5 RDIMM slot and no extra components.

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