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Green 288-pin DDR5 RDIMM module, no heat spreader

Kingston Technology Corp.

Kingston Technology Corp. KSM64R52BD4-64MD 64GB DDR5-6400 CL52 2Rx4 ECC Registered server RAM

SKU CH-NTS0-B4CT9 MPN KSM64R52BD4-64MD

64 GB DDR5 RDIMM running at 6400 MHz with ECC, registered signal and CL52 latency for server workloads

  • Total capacity64 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • CAS latencyCL52
  • Memory timings52-52-52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Capacity 64GB

Rank 2Rx4

  • 64 GB capacity supports large datasets and virtual machines
  • DDR5-6400 speed delivers high bandwidth for demanding workloads
  • ECC registered design detects and corrects memory errors automatically
  • Dual-rank 2Rx4 organisation increases memory density per channel
  • Low 1.10 V operation reduces power draw in dense server configurations

64GB DDR5 RDIMM for servers

This 64GB DDR5-6400 registered DIMM delivers ECC protection and 2Rx4 organisation for enterprise workloads. It targets system integrators and IT teams building or expanding memory capacity in compatible server platforms.

Thermals and power at 1.10V

Operating at 1.10 volts, the module runs without a heat spreader and relies on chassis airflow for cooling. Registered signal buffering helps maintain stability under sustained load while keeping power draw low for dense configurations.

ECC registered DDR5-6400 CL52

The combination of ECC, registered buffering and DDR5-6400 speed at CL52 latency determines whether this module matches the motherboard's qualified vendor list. Buyers needing unbuffered memory or a different speed grade must select another part.

How it compares

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

Price $2,069.99
Pricier than about 87% 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 $32.34 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameKingston
Model nameKSM64R52BD4-64MD
Total capacity64 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Memory
CAS latencyCL52
Memory timings52-52-52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Size & build
Shipping weight0.02 kg
Package size163 × 46 × 8 mm

Other versions of this model

3 more in the same range

Questions about this item

How do I install the 288-pin DDR5 RDIMM in a server motherboard and what step is often missed?

Align the module key notch with the slot, press firmly until both retention clips click, and ensure the registered buffer engages the memory controller — the step often missed is confirming the motherboard BIOS recognises the 6400 MT/s speed at 1.10 V before loading the OS.

What maintenance or replacement will the 64 GB 2Rx4 ECC registered module need over time?

No scheduled maintenance is required; ECC corrects single-bit errors on the fly, and the module should only be replaced if the system logs uncorrectable memory errors or if a capacity upgrade beyond 64 GB per DIMM is needed.

What limit appears first when the CL52 6400 MT/s RDIMM runs sustained workloads?

The primary limit is the CL52 latency ceiling — at 6400 MT/s the 52-cycle timing bounds random-access throughput before thermal or voltage constraints become significant.

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