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Eight bare green DDR5 RDIMM modules in a row

G.SKILL

G.SKILL F5-6400R3239G48GE8-G5 384GB (8×48GB) DDR5 6400 CL32 ECC Registered server RAM

SKU CH-VXFJ-TW71F MPN F5-6400R3239G48GE8-G5

Eight 48 GB registered DDR5 modules run at 6400 MT/s with CL32 timings and on-die plus side-band ECC for Xeon W-3400X workstations

  • Total capacity384 GB (8 × 48 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetIntel W790 Series Chipset (w/ Octo-Channel Memory Support)
  • CAS latencyCL32
  • Memory timings32-39-39-102
  • Rated voltage1.4 V
  • 384GB octa-channel capacity scales memory-heavy workloads
  • DDR5 6400 CL32 timing accelerates data throughput
  • ECC Registered design protects critical data integrity
  • Intel XMP 3.0 profile enables one-click overclock tuning
  • Hand-screened ICs validated for sustained stability

G.SKILL G5 Series 384GB DDR5 RDIMM Kit

This G.SKILL G5 Series kit provides 384GB of DDR5 registered ECC memory across eight 48GB modules. It is built for workstations based on Intel Xeon W-3400X series processors that require high-capacity, error-correcting memory for memory-intensive workloads such as content creation and rendering.

Verify Intel W790 Motherboard

Before ordering, confirm your motherboard uses the Intel W790 chipset and exposes eight DDR5 channels populated by 288-pin RDIMM slots. The kit relies on Intel XMP 3.0 profiles to reach DDR5 6400 speeds, so the BIOS must support XMP 3.0 and the CPU integrated memory controller must be capable of the rated frequency.

Sustained Load Behaviour at 1.40V CL32

Under sustained load the modules operate at 1.40V with CL32-39-39-102 timings, delivering PC5 51200 bandwidth while on-die and side-band ECC protect data integrity. A dedicated temperature sensor allows the platform to monitor thermals continuously, and hand-screened ICs are tested for stability during extended rendering or compute sessions.

How it compares

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

Price $9,173.99
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 $23.89 per GB
Pricier than about 85% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameG.SKILL
Product lineG5 Series
Model nameF5-6400R3239G48GE8-G5
Total capacity384 GB (8 × 48 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetIntel W790 Series Chipset (w/ Octo-Channel Memory Support)
Memory
CAS latencyCL32
Memory timings32-39-39-102
ECC supportYes
Buffer typeRegistered
Kit configurationOcta Channel Kit
Memory profilesIntel XMP 3.0
Heat spreaderNo
Power
Rated voltage1.4 V
Size & build
Shipping weight0.41 kg
Package size248 × 178 × 36 mm

Questions about this item

Does the 384GB kit ship as eight separate 48GB modules or must I buy extra sticks?

The kit contains eight 48GB DDR5 RDIMMs for a total of 384GB; nothing else is required.

Should I pick the CL32 6400MHz version or a slower JEDEC kit for my W790 workstation?

Choose this CL32 6400MHz kit when your Xeon W-3400X CPU and W790 motherboard support Intel XMP 3.0 and 8-channel operation.

What does the 6400 (PC5 51200) rating deliver once installed in an octa-channel board?

It provides 6400 MT/s per module across eight channels with 32-39-39-102 timings at 1.40V, giving maximum registered ECC bandwidth.

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