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Green rectangular DDR5 memory module with gold contacts and black chips

HPE

HPE P69728-B21 64GB DDR5-6400 server RAM

SKU CH-B7ZY-MZQE2 MPN P69728-B21

64 GB DDR5-6400 server memory module with 2Rx4 organisation for high-density capacity

  • Total capacity64 GB
  • Product typeDDR5-6400/PC5-51200 SDRAM
  • High capacity 64 GB module supports large workloads
  • DDR5-6400 speed delivers high data throughput
  • 2Rx4 organisation enables efficient rank utilisation
  • PC5-51200 rating confirms peak bandwidth capability
  • Smart memory features provide health monitoring insights

Server-ready 64 GB DDR5 module

This 64 GB DDR5-6400 module is built for HPE server platforms that require registered ECC memory. It targets administrators expanding memory capacity in compatible rack or tower systems.

Fits registered DDR5 slots with PC5-51200 signalling

The dual-rank 2Rx4 organisation plugs directly into registered DDR5 DIMM slots on supported HPE servers. It frees empty slots for future expansion while delivering the bandwidth the platform expects.

Replaces lower-capacity DDR5 registered DIMMs

Upgrading from smaller registered modules makes sense when workloads need more memory per channel. The jump is worth it when the server board and BIOS support this capacity and speed.

How it compares

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

Price $4,467.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $69.81 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 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 nameHPE
Model name64 GB 2Rx4 PC5-6400B-R Smart
Part numberP69728-B21
Total capacity64 GB
Product typeDDR5-6400/PC5-51200 SDRAM
Size & build
Shipping weight0.05 kg
Package size178 × 76 × 13 mm

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