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Eight green DDR5 RDIMM modules with black chips and gold contacts

G.SKILL

G.SKILL F5-6800R3445G32GE8-G5N 256GB (8 x 32GB) DDR5 6800 ECC Registered server RAM

SKU CH-Q5C3-ZYY5M MPN F5-6800R3445G32GE8-G5N

Eight 32 GB DDR5 RDIMMs running at 6800 MT/s with ECC Registered reliability for AMD Threadripper workstations

  • Capacity256GB (8 x 32GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6800 (PC5 54400)
  • CAS LatencyCL34
  • Timing34-45-45-108
  • Voltage1.40V
  • 256 GB octa-channel capacity scales multi-threaded workloads
  • DDR5 6800 speed with CL34 latency accelerates data throughput
  • ECC registered design protects data integrity in critical tasks
  • AMD EXPO profile enables one-click overclock on Threadripper 7000WX
  • 40 V operation balances high frequency with stability

G5 Neo Series DDR5 6800 ECC Registered Kit

This octa-channel kit delivers 256GB across eight 32GB registered DDR5 modules rated at 6800 MT/s with CL34 timings. It targets AMD Ryzen Threadripper 7000WX series workstations that require registered ECC memory for data integrity. The kit is validated for AMD WRX90 chipset motherboards with eight-channel support and uses the AMD EXPO profile for one-click overclock configuration.

256GB capacity for multi-threaded workloads

The 256GB total provides ample headroom for large-scale rendering, simulation datasets and virtualisation clusters that exceed typical consumer limits. Eight registered modules operate at 1.40V with 34-45-45-108 timings, balancing bandwidth and stability under sustained load. Workloads that demand more than eight channels or higher per-module density will exceed this kit's physical and electrical design.

DDR5 RDIMM registered interface constraints

The 288-pin RDIMM form factor requires a motherboard with registered DIMM slots and an AMD WRX90 chipset supporting eight-channel operation; consumer or unbuffered platforms cannot accept these modules. On-die ECC and side-band ECC protect data paths, but the registered buffer adds one cycle of latency versus unbuffered DDR5. AMD EXPO profiles simplify tuning, yet final stability depends on the CPU memory controller and motherboard QVL validation.

Highlights

  • 256 GB octa-channel capacity scales multi-threaded workloads
  • DDR5 6800 speed with CL34 latency accelerates data throughput
  • ECC registered design protects data integrity in critical tasks
  • AMD EXPO profile enables one-click overclock on Threadripper 7000WX
  • 40 V operation balances high frequency with stability

Specifications

BrandG.SKILL
SeriesG5 Neo Series
ModelF5-6800R3445G32GE8-G5N
Capacity256GB (8 x 32GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6800 (PC5 54400)
CAS LatencyCL34
Timing34-45-45-108
Voltage1.40V
ECCYes
Buffered/RegisteredRegistered
Multi-channel KitOcta Channel Kit
BIOS/Performance ProfileAMD EXPO
ChipsetAMD WRX90 Chipset
Heat SpreaderNo
FeaturesHigh performance DDR5 R-DIMM memory kit
Designed for use with AMD Ryzen Threadripper 7000WX series processor
Requires compatible AMD WRX90 motherboard w/ 8-channel support
On-die ECC & side-band ECC
Dedicated temperature sensors
AMD EXPO Support
Shipping weight0.41 kg
Package size248 × 178 × 36 mm

Questions about this item

Will the G.SKILL G5 Neo 256GB octa-channel DDR5 6800 kit work alongside my existing DDR5 RDIMMs on an AMD WRX90 motherboard?

All eight modules in this kit are matched at DDR5 6800 with CL34 timing and 1.40V. Mixing kits with different speeds, latencies or voltages can prevent the system from training at the rated profile, so identical modules are recommended.

How can I verify the kit is running at DDR5 6800 with CL34-45-45-108 after installation?

Enable the AMD EXPO profile in the BIOS, then check the memory speed and timings in CPU-Z or the UEFI memory information screen to confirm 6800 MT/s and 34-45-45-108.

Does the box contain only the eight 32GB RDIMMs, or are extra items like a screwdriver or thermal pads included?

The package includes the eight 288-pin DDR5 RDIMM modules only; no heat spreaders, tools or additional accessories are supplied.

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