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Eight green bare DDR5 RDIMM modules in anti-static tray

G.SKILL

G.SKILL F5-6400R3239G48GE8-G5N 384GB (8×48GB) DDR5 6400 CL32 ECC Registered server RAM

SKU CH-3ZWR-3CR4H MPN F5-6400R3239G48GE8-G5N

384 GB octa-channel DDR5 RDIMM kit running at 6400 MT/s with CL32 timings and registered ECC for AMD Threadripper 7000WX workstations

  • Total capacity384 GB (8 × 48 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetAMD WRX90 Chipset
  • CAS latencyCL32
  • Memory timings32-39-39-102
  • Rated voltage1.4 V
  • 384 GB capacity across eight 48 GB modules
  • DDR5 6400 speed with CL32 32-39-39-102 timings
  • ECC registered design for data integrity
  • AMD EXPO profile on Threadripper 7000WX systems
  • 40 V operation on WRX90 eight-channel platforms

Target Workstation Memory

This G.SKILL G5 Neo kit delivers 384GB of DDR5 RDIMM capacity across eight 48GB modules. It is built for AMD Ryzen Threadripper 7000WX series processors on WRX90 platforms that require registered ECC memory. The octa-channel configuration supports memory-intensive workloads such as rendering and scientific computing. Buyers needing unbuffered DIMMs or consumer desktop compatibility should look elsewhere.

Platform Compatibility Checks

Verify that your motherboard uses the AMD WRX90 chipset and provides eight DDR5 slots for full octa-channel operation. The CPU must be a Threadripper 7000WX series processor with an integrated memory controller capable of DDR5 6400 speeds. Confirm the board QVL lists this exact model number before purchase. Systems lacking registered DIMM support or EXPO capability will not run this kit as specified.

Sustained Load Behaviour

Rated at CL32 with 32-39-39-102 timings and 1.40V, the modules maintain their EXPO profile during extended compute sessions. On-die ECC and side-band ECC preserve data integrity across long rendering or simulation runs. The bare PCB design without heat spreaders relies on chassis airflow for thermal management. Stability under continuous load depends on adequate case cooling and motherboard voltage regulation quality.

How it compares

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

Price $11,040.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 384 GB (8 × 48 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $28.75 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameG.SKILL
Product lineG5 Neo Series
Model nameF5-6400R3239G48GE8-G5N
Total capacity384 GB (8 × 48 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetAMD WRX90 Chipset
Memory
CAS latencyCL32
Memory timings32-39-39-102
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

What comes in the box with the F5-6400R3239G48GE8-G5N kit and what must be purchased separately?

The kit includes eight 48 GB DDR5 6400 RDIMM modules for a total of 384 GB. A compatible AMD WRX90 motherboard with eight-channel support and a Ryzen Threadripper 7000WX series processor are required but not included.

How do I choose between the available versions or capacities of this G5 Neo series memory?

This model is a single 384 GB octa-channel kit of eight 48 GB modules running at DDR5 6400 CL32. No other capacity or speed variants are listed for this part number.

What does the DDR5 6400 (PC5 51200) rating mean once the modules are installed in a real workstation?

The modules operate at 6400 MT/s with timings of 32-39-39-102 at 1.40 V when the AMD EXPO profile is enabled on a supported WRX90 platform, delivering registered ECC bandwidth for memory-intensive workloads.

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