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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

Kingston Technology Corp.

Kingston Technology Corp. KSM64R52BD4-64HA 64GB DDR5-6400 CL52 ECC Registered 288-pin server RAM

SKU CH-SV9D-PYZAG MPN KSM64R52BD4-64HA

64 GB DDR5-6400 ECC registered dual-rank module with CL52 latency and 1.10 V operation for server motherboards

  • Total capacity64 GB (8 × 8 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetHynix Chipset
  • CAS latencyCL52
  • Memory timings52-52-52
  • TRAC32ns
  • 64 GB capacity supports large server workloads
  • DDR5-6400 speed delivers high data throughput
  • CL52 latency with 32 ns tRAC enables responsive access
  • ECC and registered design protects data integrity
  • 10 V operation reduces power consumption

64GB DDR5-6400 registered ECC server memory

This 64GB DDR5 kit contains eight 8GB modules running at 6400 MT/s with CL52 latency. Registered signal processing and on-die ECC protect data integrity in multi-socket servers and workstations. The 1.10V operating voltage matches the DDR5 baseline for dense configurations. Modules use Hynix 2Rx4 ICs on standard 288-pin DIMM PCBs.

Thermals and power at 1.10V

Registered buffering and the low 1.10V rail keep per-module power modest even with eight ranks populated. Passive operation is typical in chassis with directed airflow; no heat spreaders are fitted. The tRAC of 32ns and 52-52-52 timings indicate standard JEDEC DDR5-6400 behaviour under sustained server loads.

What the registered ECC design changes

Registered clock drivers reduce electrical load on the memory controller, allowing all eight DIMM slots to be filled without signal degradation. On-die ECC corrects single-bit errors inside each DRAM chip before data leaves the module. The combination targets uptime-critical workloads rather than low-latency desktop or overclocking use.

How it compares

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

Price $1,976.99
Pricier than about 86% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (8 × 8 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $30.89 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 nameKSM64R52BD4-64HA
Total capacity64 GB (8 × 8 GB)
Product type288-Pin DDR5 SDRAM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetHynix Chipset
Memory
CAS latencyCL52
Memory timings52-52-52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Size & build
Shipping weight0.05 kg
Package size161 × 44 × 9 mm
More details
TRAC32ns

Questions about this item

How do I install this 288-pin DDR5 registered DIMM and what step is often missed?

Align the notch on the module with the key in the server motherboard slot, press firmly until both retaining clips lock, then verify in BIOS that ECC and registered mode are enabled for the 2Rx4 configuration.

What maintenance or replacement will this 64GB DDR5-6400 kit need over time?

No scheduled maintenance is required; the modules have no heat spreader and run at 1.10V, so replacement is only necessary if a DIMM fails or the platform is upgraded beyond DDR5-6400.

What limit appears first when this CL52 registered memory runs under sustained load?

The CL52 latency at 6400 MT/s sets the throughput ceiling; sustained workloads will hit bandwidth limits before thermal throttling because the modules operate at 1.10V without a spreader.

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