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Eight bare green DDR5 RDIMM modules in a row

G.SKILL

G.SKILL F5-6400R3239G32GE8-G5 256GB (8×32GB) DDR5 6400 CL32 ECC Registered server RAM

SKU CH-4XZW-KB5BX MPN F5-6400R3239G32GE8-G5

Eight 32 GB DDR5 RDIMMs deliver 256 GB of registered ECC memory at 6400 MT/s with CL32 timing for Intel Xeon W-3400X workstations

  • Capacity256GB (8 x 32GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL32
  • Timing32-39-39-102
  • Voltage1.40V
  • 256 GB octa-channel kit scales memory-intensive workloads
  • DDR5 6400 speed delivers high bandwidth for demanding tasks
  • CL32 32-39-39-102 timings balance latency and throughput
  • ECC Registered design protects data integrity in servers
  • Intel XMP 3.0 profile enables one-click overclock configuration

G5 Series 256GB DDR5 RDIMM Kit

This G.SKILL G5 Series kit delivers 256GB across eight 32GB DDR5 RDIMM modules. It is built for workstations that require registered ECC memory and eight-channel bandwidth. Systems without an Intel W790 motherboard cannot use this kit.

Intel W790 Octa-Channel Requirement

The decisive specification is the Intel W790 chipset with eight-channel memory support. Only motherboards that expose eight DDR5 channels and the Xeon W-3400X processor family can activate the rated DDR5 6400 speed and XMP 3.0 profile. Fewer channels or a different chipset will not run this kit at specification.

Sustained Load Behaviour

Hand-screened ICs and individual module testing target stability during extended rendering or compute sessions. The 1.40V operating voltage and registered buffer help maintain signal integrity across all eight channels under continuous load. No heat spreader is fitted, so chassis airflow must dissipate the thermal output of the dense 256GB configuration.

Points forts

  • 256 GB octa-channel kit scales memory-intensive workloads
  • DDR5 6400 speed delivers high bandwidth for demanding tasks
  • CL32 32-39-39-102 timings balance latency and throughput
  • ECC Registered design protects data integrity in servers
  • Intel XMP 3.0 profile enables one-click overclock configuration

Caractéristiques

BrandG.SKILL
SeriesG5 Series
ModelF5-6400R3239G32GE8-G5
Capacity256GB (8 x 32GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL32
Timing32-39-39-102
Voltage1.40V
ECCYes
Buffered/RegisteredRegistered
Multi-channel KitOcta Channel Kit
BIOS/Performance ProfileIntel XMP 3.0
ChipsetIntel W790 Series Chipset (w/ Octo-Channel Memory Support)
Heat SpreaderNo
FeaturesHigh performance DDR5 R-DIMM memory kit
Optimized for Intel Xeon W-3400X series processors
Requires compatible Intel W790 chipset motherboard w/ 8-channel support
On-die ECC & side-band ECC
Dedicated temperature sensors
Intel XMP 3.0 Support
Poids d’expédition0.41 kg
Dimensions du colis248 × 178 × 36 mm

Questions sur cet article

What does the DDR5 6400 rating mean for actual throughput in an eight-channel workstation?

The kit runs at 6400 MT/s with CL32-39-39-102 timings at 1.40V; real-world bandwidth depends on the CPU memory controller and motherboard trace layout.

How does Intel XMP 3.0 work with registered ECC modules on a W790 platform?

XMP 3.0 stores the 6400 MT/s profile on the DIMM; the W790 chipset reads it at boot and applies the voltage and timings if the Xeon W-3400X IMC supports the frequency.

Will these 288-pin RDIMMs fit a standard workstation board with eight slots?

Yes, each module is a standard-height 288-pin DDR5 RDIMM without a heat spreader, so they install in any eight-slot W790 motherboard that lists this kit on its QVL.

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