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Four bare green DDR5 RDIMM modules with gold contacts

G.SKILL

G.SKILL F5-6400R3239G48GQ4-G5N 192GB (4×48GB) DDR5 6400 CL32 ECC Registered server RAM

SKU CH-PGDM-AGT7P MPN F5-6400R3239G48GQ4-G5N

192 GB quad-channel DDR5-6400 ECC registered kit with CL32 timings for AMD Threadripper 7000 workstations

  • Total capacity192 GB (4 × 48 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetAMD TRX50 Chipset
  • CAS latencyCL32
  • Memory timings32-39-39-102
  • Rated voltage1.4 V
  • 192 GB total capacity across four 48 GB modules
  • DDR5 6400 speed with CL32 latency for fast data throughput
  • ECC registered design detects and corrects memory errors
  • AMD EXPO profile enables one-click overclock on TRX50 platforms
  • 40 V operation with 32-39-39-102 timings tuned for stability

High-capacity ECC kit for Threadripper workstations

This 192GB quad-channel kit combines four 48GB DDR5 RDIMMs rated at 6400 MT/s with CL32 timings. Registered design and on-die plus side-band ECC protect data integrity for professional workloads. It targets AMD Ryzen Threadripper 7000X series processors on TRX50 motherboards with four-channel support.

Thermals and power at rated voltage

Modules run at 1.40V without a heat spreader, relying on case airflow for cooling. The EXPO profile applies the 32-39-39-102 timings automatically when the platform supports it. Registered buffering adds minor latency but improves signal quality across all four channels.

Sustained-load behaviour with hand-screened ICs

Hand-screened memory ICs and individual module testing aim to maintain stability during extended rendering or compute sessions. Rated speed and stability depend on motherboard QVL validation and CPU IMC capability. Builders needing more than four modules or non-AMD platforms should look elsewhere.

How it compares

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

Price $4,623.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 192 GB (4 × 48 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $24.08 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 Neo Series
Model nameF5-6400R3239G48GQ4-G5N
Total capacity192 GB (4 × 48 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetAMD TRX50 Chipset
Memory
CAS latencyCL32
Memory timings32-39-39-102
ECC supportYes
Buffer typeRegistered
Kit configurationQuad Channel Kit
Memory profilesAMD EXPO
Heat spreaderNo
Power
Rated voltage1.4 V
Size & build
Shipping weight0.27 kg
Package size241 × 178 × 25 mm

Questions about this item

How do I install this 288-pin DDR5 RDIMM kit on an AMD TRX50 motherboard and what step is often missed?

Populate all four channels with one 48GB module each, then enable the AMD EXPO profile in BIOS so the kit runs at DDR5 6400 CL32 32-39-39-102 1.40V; skipping EXPO leaves it at JEDEC defaults.

What maintenance or replacement will this registered ECC memory need over its service life?

No scheduled maintenance is required; if a module fails the on-die and side-band ECC will log correctable errors, and the only remedy is replacing the faulty 48GB RDIMM.

What limit appears first when this quad-channel kit runs sustained workloads at 6400 MT/s?

The 1.40V operating voltage and registered buffer latency (CL32 32-39-39-102) become the thermal and stability ceiling before bandwidth saturates the TRX50 four-channel interface.

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