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

A-Tech

A-Tech 64GB DDR5-4800 ECC RDIMM Server RAM 2Rx4 CL40 1.10V

SKU CH-7YM5-0KR6M

A 64 GB DDR5-4800 registered ECC module with CL40 timing and 1.10 V operation for server workloads

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64GB capacity expands server memory for larger workloads
  • DDR5-4800 speed delivers 38400 MT/s data rate
  • ECC RDIMM with 2Rx4 rank detects and corrects memory errors
  • Registered 288-pin DIMM reduces electrical load on the memory bus
  • 10V operation matches the DDR5 standard voltage

64GB DDR5-4800 ECC RDIMM for Servers

This 64GB registered DIMM is built for server and workstation platforms that require error-correcting memory. It operates at the standard DDR5-4800 speed with a CAS latency of 40 and runs at 1.10V. The module targets administrators upgrading compatible IBM-Lenovo systems or similar enterprise hardware.

288-pin registered build without heat spreader

The module uses a 288-pin DDR5 RDIMM form factor and a 2Rx4 rank configuration with major-brand DRAM ICs. Registered buffering reduces electrical load on the memory controller, supporting stability in multi-DIMM configurations. The absence of a heat spreader keeps the profile low for dense chassis but relies on system airflow for cooling.

DDR5-4800 bandwidth ceiling

The PC5-38400 rating sets the maximum data rate for this module, limiting throughput to the DDR5-4800 specification. Registered operation adds a clock cycle of latency versus unbuffered memory, which affects timing-sensitive workloads. Compatibility depends on the platform's qualified-vendor list; systems not validated for this part number may not POST or may run at reduced speeds.

How it compares

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

Price $1,594.99
Pricier than about 84% 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).
CAS latency 40
Typical for this category: the median of 439 items is 40.
Price per GB $24.92 per GB
Pricier than about 86% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for IBM-Lenovo 4 × 77A77032
Model nameA-Tech 64 GB DDR5-4800 ECC RDIMM Server RAM Module
Total capacity64 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Does the DDR5-4800 (PC5-38400) rating set a hard ceiling on memory bandwidth for this module?

The module is rated DDR5-4800 (PC5-38400). The memory controller and channel population in your server determine the sustained bandwidth you will see.

What physical slot and clearance does this 288-pin RDIMM require?

It fits a standard 288-pin DDR5 RDIMM socket. No heat spreader is present, so low-profile heatsinks or tight DIMM spacing will not interfere.

What is the correct installation sequence for this 2Rx4 registered ECC module?

Power down the server, open the chassis, align the notch on the 288-pin edge connector with the key in the slot, press firmly until both retention clips latch, then follow the system manual for channel population order.

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