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Four black DDR5 RDIMM modules in a quad-channel kit

G.SKILL

G.SKILL Zeta R5 Neo 128GB (4×32GB) DDR5 6400 CL32 ECC Registered Server RAM F5-6400R3239G32GQ4-ZR5NK

SKU CH-Z2AC-420CM MPN F5-6400R3239G32GQ4-ZR5NK

128 GB quad-channel DDR5 RDIMM kit running at 6400 MT/s with CL32 latency, ECC and AMD EXPO support for Threadripper workstations

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL32
  • Timing32-39-39
  • Voltage1.40V

Capacity 128GB (4 x 32GB)

Speed DDR5 6400 (PC5 51200)

  • 128 GB quad-channel capacity scales multi-threaded workloads
  • DDR5 6400 speed with CL32 timing accelerates data throughput
  • ECC registered design protects data integrity in critical tasks
  • AMD EXPO support simplifies overclock configuration on Threadripper 7000
  • On-die and side-band ECC enhance error correction coverage

Zeta R5 Neo DDR5 6400 RDIMM

This 128GB quad-channel kit uses four 32GB registered DDR5 modules rated at 6400 MT/s with CL32 timings. It delivers ECC error correction and on-die temperature sensors for data integrity. The kit targets high-end AMD workstation platforms that require registered memory.

Suits AMD Threadripper workstations

The kit is designed for AMD Ryzen Threadripper 7000X series processors on TRX50 motherboards with four-channel support. Builders using consumer CPUs, unbuffered memory slots, or boards lacking AMD EXPO support should choose a different kit.

Registered ECC at 1.40V

These RDIMMs operate at 1.40V with registered buffering and full ECC. Systems that only accept unbuffered non-ECC DIMMs or cannot supply the required voltage will not work with this memory.

Highlights

  • 128 GB quad-channel capacity scales multi-threaded workloads
  • DDR5 6400 speed with CL32 timing accelerates data throughput
  • ECC registered design protects data integrity in critical tasks
  • AMD EXPO support simplifies overclock configuration on Threadripper 7000
  • On-die and side-band ECC enhance error correction coverage

Specifications

BrandG.SKILL
SeriesZeta R5 Neo series
ModelF5-6400R3239G32GQ4-ZR5NK
Capacity128GB (4 x 32GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL32
Timing32-39-39
Voltage1.40V
ECCYes
Buffered/RegisteredRegistered
Multi-channel KitQuad Channel Kit
FeaturesZeta R5 Neo series memory kits are overclocked performance DDR5 R-DIMM memory designed
for use with compatible AMD workstation systems. Featuring AMD EXPO and ECC support, the
Zeta R5 Neo series is the ultimate overclocked performance memory solution for high-end
workstation platforms.
• Overclock performance DDR5 RDIMM memory kit
• Designed for use with AMD Ryzen Threadripper 7000X series processor
• Requires compatible AMD TRX50 motherboard w/ 4-channel support
• On-die ECC & side-band ECC
• Dedicated temperature sensors
• AMD EXPO Support
Shipping weight0.23 kg
Package size244 × 178 × 24 mm

Other versions of this model

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Questions about this item

What motherboard slot and channel layout does this 288-pin DDR5 RDIMM kit require?

The kit uses 288-pin DDR5 RDIMM modules and needs a compatible AMD TRX50 motherboard with 4-channel support to run as a quad-channel kit.

How is AMD EXPO enabled on this 6400 CL32 kit, and what step is often missed?

Enable the AMD EXPO profile in the motherboard BIOS after installing all four 32GB modules; the step often missed is confirming the profile applies the 1.40V voltage and 32-39-39 timings.

What long-term checks do the dedicated temperature sensors on these modules support?

The on-module temperature sensors allow ongoing thermal monitoring so you can verify cooling performance and detect any degradation over the memory's service life.

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