Technical Snapshot

The G.Skill Zeta R5 DDR5 64GB (4x16GB) 6400MT/s RDIMM R-DIMM — F5-6400R3239G16GQ4-ZR5K is a server-grade DDR5 RDIMM memory module designed for enterprise servers and workstations. Running at 6,400 MT/s with CL32-39-39-100 timings at 1.4V, it supports R-DIMM profiles for one-click speed optimization in compatible BIOS. The kit provides 64GB (4x16GB) of DDR5 memory with a Aluminum heatspreader design. Backed by a Limited Lifetime warranty, this module targets server deployments, virtualization hosts, and high-availability computing environments requiring ECC error correction.

Use Case
Server deployments, virtualization, high-availability computing
Compatibility
RDIMM-compatible server motherboard
Category
DDR5 RDIMM — G.Skill Zeta R5
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G.Skill RAM
G.Skill Zeta R5

Zeta R5 DDR5 64GB (4x16GB) 6400MT/s RDIMM R-DIMM — F5-6400R3239G16GQ4-ZR5K

DDR5 · RDIMM · 6,400 MT/s · CL32-39-39-100 · 64GB (4x16GB)

Memory transfer rate in megatransfers per second. Higher MT/s provides more bandwidth for CPU-bound workloads.
Speed 6,400 MT/s
Total kit capacity across all modules. Dual-channel kits double memory bandwidth.
Capacity 64GB (4x16GB)
CAS latency and full timing chain. Lower CL means faster first-byte access time.
Timings CL32-39-39-100
Overclocking profile for one-click speed optimization in compatible BIOS. XMP for Intel, EXPO for AMD.
Profile R-DIMM
MPNF5-6400R3239G16GQ4-ZR5K
EAN4713294233004
CategoryMemory
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Memory Specifications

Memory TypeDDR5
Form FactorRDIMM
Total Capacity64GB (4x16GB)
Speed6,400 MT/s
TimingsCL32-39-39-100
Voltage1.4V
XMP/EXPO ProfileR-DIMM
ECCYes
HeatspreaderAluminum
Module Height31.2 mm
WarrantyLimited Lifetime

Full Specifications

Data sourced from G.Skill product specifications
Memory
Product LineZeta R5
Memory TypeDDR5
Form FactorRDIMM
Total Capacity64GB (4x16GB)
Module Count4
Module Capacity16GB
Speed6,400 MT/s
Timings & Voltage
TimingsCL32-39-39-100
Voltage1.4V
XMP/EXPO ProfileR-DIMM
ECCYes
Design
HeatspreaderAluminum
ColorBlack
Module Height31.2 mm
Product
BrandG.Skill
MPNF5-6400R3239G16GQ4-ZR5K
EAN4713294233004
WarrantyLimited Lifetime
Physical
Weight0.250 kg (estimated)
Package Dimensions14.0 x 8.0 x 1.0 cm (estimated)

Support

G.Skill Memory Compatibility ToolCheck motherboard compatibility for this module
G.Skill Support →
G.Skill Zeta R5 DDR5 64GB (4x16GB) 6400MT/s RDIMM R-DIMM — F5-6400R3239G16GQ4-ZR5K DatasheetPDF · Technical specifications
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Frequently Asked Questions

What systems is this memory compatible with?

The G.Skill Zeta R5 DDR5 64GB (4x16GB) 6400MT/s RDIMM R-DIMM — F5-6400R3239G16GQ4-ZR5K is RDIMM server memory with ECC error correction. It requires a server or workstation motherboard with RDIMM support. NOT compatible with standard desktop motherboards. Check your server's QVL (Qualified Vendor List) for compatibility.

Do I need to enable R-DIMM in BIOS?

Yes. Out of the box, DDR5 memory runs at JEDEC default speed (typically 4800 MT/s). To achieve the rated 6,400 MT/s with CL32-39-39-100 timings, enable R-DIMM in your motherboard BIOS. This is a one-click setting in the memory overclocking section.

Does this kit run in dual-channel mode?

Yes, the G.Skill Zeta R5 DDR5 64GB (4x16GB) 6400MT/s RDIMM R-DIMM — F5-6400R3239G16GQ4-ZR5K includes 4 modules which enable dual-channel mode when installed in the correct DIMM slots (typically A2+B2 or slots 2+4). Dual-channel doubles memory bandwidth compared to single-channel configuration. Check your motherboard manual for optimal slot placement.

Does this memory support ECC error correction?

Yes, the G.Skill Zeta R5 DDR5 64GB (4x16GB) 6400MT/s RDIMM R-DIMM — F5-6400R3239G16GQ4-ZR5K includes ECC (Error-Correcting Code) support, which detects and corrects single-bit memory errors. This is essential for servers, workstations, and mission-critical applications where data integrity is paramount.

What warranty does this memory come with?

The G.Skill Zeta R5 DDR5 64GB (4x16GB) 6400MT/s RDIMM R-DIMM — F5-6400R3239G16GQ4-ZR5K comes with a Limited Lifetime warranty from G.Skill.

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MPN: F5-6400R3239G16GQ4-ZR5K
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