We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Eight black DDR5 registered ECC RDIMM modules in a row

G.SKILL

G.SKILL F5-6400R3239G48GE8-ZR5NK 384GB 8x48GB DDR5 6400 CL32 Registered ECC server RAM

SKU CH-40RP-P5SRR MPN F5-6400R3239G48GE8-ZR5NK

Eight 48 GB DDR5 registered ECC modules running at 6400 MT/s with CL32 timing for AMD Threadripper workstations

  • Total capacity384 GB (8 × 48 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • CAS latencyCL32
  • Memory timings32-39-39-102
  • Rated voltage1.4 V
  • Buffer typeRegistered
  • 384 GB octa-channel capacity scales Threadripper workloads
  • Registered DDR5 6400 with CL32 timing accelerates data throughput
  • On-die and side-band ECC protects critical server data
  • AMD EXPO profile enables one-click 6400 operation
  • Dedicated temperature sensors monitor module health continuously

384GB Octa-Channel DDR5 Kit

This G.SKILL Zeta R5 Neo kit delivers 384GB across eight 48GB registered DDR5 modules. It targets workstations built on AMD Threadripper 7000WX series processors with WRX90 motherboards. The memory runs at DDR5 6400 with CL32 latency and on-die plus side-band ECC. It is not suited for consumer platforms or boards lacking eight-channel support.

Registered ECC Build with EXPO

Each 288-pin RDIMM operates at 1.40V and carries a dedicated temperature sensor for thermal monitoring. The black heatspreaders contain no LEDs. AMD EXPO profiles load the 32-39-39-102 timings automatically on compatible WRX90 firmware. Registered buffering and ECC add latency overhead that benefits data integrity over raw throughput.

DDR5 6400 Platform Limits

The DDR5 6400 speed and octa-channel layout require a Threadripper 7000WX CPU and WRX90 chipset with all eight channels populated. Consumer Ryzen processors and mainstream chipsets cannot address this capacity or channel count. Builders needing fewer channels or lower capacities should select a different kit.

How it compares

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

Price $1,861.99
Pricier than about 86% 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 $4.85 per GB
Cheaper than about 74% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameG.SKILL
Product lineZeta R5 Neo Series
Model nameF5-6400R3239G48GE8-ZR5NK
Total capacity384 GB (8 × 48 GB)
Product type288-Pin PC RAM
Product colorBlack
Performance
Rated speedDDR5 6400 (PC5 51200)
Memory
CAS latencyCL32
Memory timings32-39-39-102
ECC supportYes
Buffer typeRegistered
Kit configurationOcta Channel Kit
Memory profilesAMD EXPO
Power
Rated voltage1.4 V
Size & build
Shipping weight0.36 kg
Package size254 × 178 × 38 mm
Compatibility
Recommended forAMD Threadripper Compatible / AMD WRX90
More details
LED lightingNone

Questions about this item

Does the DDR5 6400 speed run at its rated 6400 MT/s with AMD EXPO on a Threadripper 7000WX system?

Yes, the kit is AMD EXPO profiled for DDR5 6400 (PC5 51200) and is designed for Ryzen Threadripper 7000WX processors on WRX90 motherboards with 8-channel support.

What motherboard and slot requirements must be met to install all eight 48 GB modules?

An AMD WRX90 motherboard with eight 288-pin DDR5 DIMM slots is required to populate the full octa-channel 384 GB kit.

How do I enable the rated CL32 32-39-39-102 timings at 1.40 V during installation?

Install all eight registered ECC RDIMMs into the eight-channel WRX90 board, enter the BIOS, and select the AMD EXPO profile to apply the 6400 MT/s speed, CL32 timings and 1.40 V voltage automatically.

More in ECC Server RAM

Similar items