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Four bare green DDR5 RDIMM modules in a row

G.SKILL

G.SKILL F5-6400R3239F32GQ4-T5N 128GB (4x32GB) DDR5-6400 CL32 Registered ECC server RAM

SKU CH-8N38-BVHDW MPN F5-6400R3239F32GQ4-T5N

128 GB quad-channel DDR5-6400 registered ECC kit with CL32 timing for Threadripper 7000X on TRX50

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL32
  • Timing32-39-39-102
  • Voltage1.35V
  • 128 GB quad-channel capacity scales multi-threaded workloads
  • DDR5-6400 CL32 delivers high bandwidth at low latency
  • Registered ECC with on-die and side-band protection ensures data integrity
  • 35 V operation reduces power draw under load
  • 16-layer PCB optimises signal integrity for Threadripper 7000X platforms

Purpose-built server memory kit

This 128GB quad-channel kit delivers registered ECC DDR5 for AMD Threadripper 7000X workstations. Four 32GB modules provide the capacity and error correction required for professional workloads. The registered design reduces electrical load on the memory controller.

Registered ECC with AMD EXPO

The modules run at DDR5-6400 with CL32-39-39-102 timings at 1.35V using the AMD EXPO profile. On-die ECC and side-band ECC protect data integrity in critical applications. A 16-layer PCB supports signal quality at this speed. Not for consumer platforms lacking registered DIMM support.

No heat spreader included

The kit ships without heatsinks, relying on chassis airflow for thermal management. Builders must ensure adequate cooling in dense TRX50 configurations. The bare modules fit tight clearance constraints where tall spreaders would interfere. Software control is handled through motherboard BIOS EXPO settings.

Highlights

  • 128 GB quad-channel capacity scales multi-threaded workloads
  • DDR5-6400 CL32 delivers high bandwidth at low latency
  • Registered ECC with on-die and side-band protection ensures data integrity
  • 35 V operation reduces power draw under load
  • 16-layer PCB optimises signal integrity for Threadripper 7000X platforms

Specifications

BrandG.SKILL
SeriesT5 Neo Series
ModelF5-6400R3239F32GQ4-T5N
Capacity128GB (4 x 32GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL32
Timing32-39-39-102
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Multi-channel KitQuad Channel Kit
BIOS/Performance ProfileAMD EXPO
Heat SpreaderNo
FeaturesHigh performance DDR5 R-DIMM memory kit
16-layer PCB design
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 weight0.12 kg
Package size244 × 178 × 24 mm

Questions about this item

What real-world throughput does the DDR5-6400 rating deliver on a Threadripper 7000X system?

The kit runs at 6400 MT/s, providing up to 51200 MB/s per channel across four channels when the AMD EXPO profile is loaded on a compatible TRX50 motherboard.

How does the registered ECC design affect compatibility with the TRX50 platform?

Registered modules with on-die and side-band ECC are required for the quad-channel TRX50 memory controller; the 288-pin RDIMM form factor and AMD EXPO support ensure correct training at 6400 MT/s.

Will these modules fit in a standard TRX50 server chassis without a heat spreader?

Yes, the bare 16-layer PCB uses the standard 288-pin RDIMM height, so it clears typical DIMM slots and airflow ducts in TRX50 workstations and rackmounts.

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