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Four green DDR5 RDIMM modules without heat spreaders, 288-pin, quad-channel kit

G.SKILL

G.SKILL F5-6400R3239G16GQ4-G5 64GB (4×16GB) DDR5 6400 CL32 ECC Registered server RAM

SKU CH-328Z-5VTNN MPN F5-6400R3239G16GQ4-G5

64GB quad-channel DDR5 6400 ECC registered kit with CL32 timing and XMP 3.0 for Xeon W-2400X workstations

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetIntel W790 Series Chipset (w/ Quad-Channel Memory Support)
  • CAS latencyCL32
  • Memory timings32-39-39-102
  • Rated voltage1.4 V
  • 64 GB quad-channel kit scales workstation memory capacity
  • DDR5 6400 speed with CL32 latency accelerates data throughput
  • ECC registered design protects data integrity in critical workloads
  • Intel XMP 3.0 profile simplifies overclock configuration
  • Optimised for Xeon W-2400X and W790 chipset platforms

G.SKILL G5 Series 64GB DDR5 6400 ECC Registered

This quad-channel kit delivers 64GB across four 16GB DDR5 RDIMM modules rated at 6400 MT/s with CL32 timings. It features on-die and side-band ECC plus a dedicated temperature sensor for error correction and thermal monitoring. The modules operate at 1.40V and support Intel XMP 3.0 profiles for configured overclocking. They are built for Intel W790 chipset workstations with Xeon W-2400X series processors.

Suited for multi-channel workstations needing

This kit suits professionals running memory-intensive workloads such as content creation and graphic rendering on compatible Intel W790 platforms. Builders using consumer chipsets, non-Xeon CPUs, or motherboards lacking quad-channel support should look elsewhere. Systems requiring unbuffered UDIMMs or lower voltage operation will not accept these registered modules. The absence of a heat spreader also means airflow must be managed by the chassis.

Sustained load behaviour with registered ECC DDR5

Under continuous heavy workloads the registered buffer helps maintain signal integrity across all four channels while ECC corrects single-bit errors in real time. The onboard temperature sensor allows the platform to monitor thermal status during extended rendering or compute tasks. Stability at the rated 6400 speed depends on motherboard QVL validation and CPU IMC capability over long periods. Hand-screened ICs and factory testing aim to reduce variance during prolonged operation.

How it compares

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

Price $1,811.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $28.31 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 Series
Model nameF5-6400R3239G16GQ4-G5
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetIntel W790 Series Chipset (w/ Quad-Channel Memory Support)
Memory
CAS latencyCL32
Memory timings32-39-39-102
ECC supportYes
Buffer typeRegistered
Kit configurationQuad Channel Kit
Memory profilesIntel XMP 3.0
Heat spreaderNo
Power
Rated voltage1.4 V
Size & build
Shipping weight0.11 kg
Package size244 × 178 × 25 mm

Questions about this item

Will this quad-channel DDR5 6400 kit work with my Intel Xeon W-2400X processor?

Yes, the kit is optimised for Intel Xeon W-2400X series processors and requires a compatible Intel W790 chipset motherboard with four-channel memory support.

If I keep my existing DDR5 RDIMMs, can I add this 64GB quad-channel kit alongside them?

Mixing modules with different speeds, timings or voltage is not recommended; this kit runs at DDR5 6400 CL32 1.40V with 32-39-39-102 timings and should be installed as a matched quad-channel set.

How can I confirm the kit is running at its rated DDR5 6400 CL32 speeds after installation?

Enable the Intel XMP 3.0 profile in the BIOS, then verify the operating frequency shows 6400 MT/s and timings read 32-39-39-102 using CPU-Z or the motherboard firmware interface.

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