Technical Snapshot

The HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA) is a server-grade DDR5 RDIMM memory module designed for enterprise servers and workstations. Running at 4,800 MT/s with CL40 timings at 1.1V, The module provides 64GB of DDR5 memory . this module targets server deployments, virtualization hosts, and high-availability computing environments requiring ECC error correction.

Use Case
Server deployments, virtualization, high-availability computing
Compatibility
RDIMM-compatible server motherboard
Category
DDR5 RDIMM — HPE
HPE
HPE RAM
HPE

HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA)

DDR5 · RDIMM · 4,800 MT/s · 64GB

Memory transfer rate in megatransfers per second. Higher MT/s provides more bandwidth for CPU-bound workloads.
Speed 4,800 MT/s
Total kit capacity across all modules. Dual-channel kits double memory bandwidth.
Capacity 64GB
CAS Latency — the delay between a memory access request and data availability.
Latency CL40
Operating voltage. Higher voltage allows faster speeds but increases power and heat.
Voltage 1.1V
MPN340K3AA
EAN0195697639036
CategoryMemory
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Memory Specifications

Memory TypeDDR5
Form FactorRDIMM
Total Capacity64GB
Speed4,800 MT/s
CAS LatencyCL40
Voltage1.1V
ECCYes

Full Specifications

Data sourced from HPE product specifications
Memory
Memory TypeDDR5
Form FactorRDIMM
Total Capacity64GB
Module Count1
Module Capacity64GB
Speed4,800 MT/s
Timings & Voltage
CAS LatencyCL40
Voltage1.1V
ECCYes
Product
BrandHPE
MPN340K3AA
EAN0195697639036
Physical
Weight0.089 kg
Package Dimensions22.5 x 15.6 x 1.5 cm

Support

HPE Memory Compatibility ToolCheck motherboard compatibility for this module
HPE Support →
HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA) DatasheetPDF · Technical specifications
HPE Support →
← Back to Memory Catalog

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Frequently Asked Questions

What systems is this memory compatible with?

The HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA) is RDIMM server memory with ECC error correction. It requires a server or workstation motherboard with RDIMM support. NOT compatible with standard desktop motherboards. Check your server's QVL (Qualified Vendor List) for compatibility.

What speed does this memory run at?

The HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA) runs at 4,800 MT/s with CL40 timings. This is a JEDEC standard speed that works automatically without BIOS configuration.

Can I add more memory later?

Yes, the HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA) is a single 64GB module. You can add additional compatible DDR5 RDIMM modules to populate empty slots. For best performance, use matched modules of the same speed and capacity to enable dual-channel mode.

Does this memory support ECC error correction?

Yes, the HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA) includes ECC (Error-Correcting Code) support, which detects and corrects single-bit memory errors. This is essential for servers, workstations, and mission-critical applications where data integrity is paramount.

Where can I find technical support?

Visit the HPE support website for compatibility tools, firmware updates, and technical documentation for the HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA).

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Product: HP 64GB (1x64GB) DDR5-4800 ECC Registered Memory (340K3AA)
MPN: 340K3AA
Schemas: Product + BreadcrumbList
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