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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

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 6800 (PC5 54400)
  • ChipsetAMD WRX90 Chipset
  • CAS latencyCL34
  • Memory timings34-45-45-108
  • Rated voltage1.4 V
  • 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.

How it compares

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

Price $13,115.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $51.23 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameG.SKILL
Product lineG5 Neo Series
Model nameF5-6800R3445G32GE8-G5N
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6800 (PC5 54400)
Processor
ChipsetAMD WRX90 Chipset
Memory
CAS latencyCL34
Memory timings34-45-45-108
ECC supportYes
Buffer typeRegistered
Kit configurationOcta Channel Kit
Memory profilesAMD EXPO
Heat spreaderNo
Power
Rated voltage1.4 V
Size & build
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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