G.Skill T5 Neo 256GB (4x64GB) DDR5-6400 CL36 ECC Registered RDIMM AMD EXPO Workstation Memory Kit F5-6400R3644E64GQ4-T5N
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G.Skill
F5-6400R3644E64GQ4-T5N
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G.Skill T5 Neo 256GB (4x64GB) DDR5-6400 CL36 ECC RDIMM
256GB Kit (4×64GB)DDR5-6400 CL36ECC RegisteredAMD EXPO · Workstation
The G.Skill T5 Neo F5-6400R3644E64GQ4-T5N is a 256GB (4×64GB) DDR5-6400 ECC registered (RDIMM) memory kit built for high-end AMD workstation platforms. It runs at 6400 MT/s with CL36 (36-44-44-102) timings using one-click AMD EXPO, and ships as four 288-pin registered DIMMs with on-die and side-band ECC for data integrity under sustained professional workloads. This is workstation/server-class memory — it requires a platform that supports registered ECC DDR5, such as AMD Threadripper systems. The part number F5-6400R3644E64GQ4-T5N identifies this exact 256GB quad-module kit. Typically in stock with fast delivery across Cyprus.
Compatibility — important, read before buying:
This is registered (buffered) ECC memory (RDIMM) — it works only in platforms that support registered DDR5, such as AMD Threadripper / workstation boards. It will not work in standard AMD AM5 or Intel consumer desktop motherboards, which require unbuffered (UDIMM) memory. It is also not DDR4. Confirm your workstation motherboard and CPU support registered ECC DDR5 and 256GB / 4×64GB on its QVL, update to the latest BIOS, and enable AMD EXPO to apply the rated 6400 MT/s profile.
Best For
✓AMD Threadripper workstation builds
✓3D rendering, VFX and video production
✓AI / ML, data science and simulation
✓Large-scale virtualization and containers
✓Professionals needing ECC data integrity
✓High-capacity, high-bandwidth workloads
Key Features
256GB Registered ECC Capacity
Four 64GB RDIMMs give 256GB of DDR5 with error-correcting reliability — built for memory-hungry professional workloads that must stay stable for hours.
DDR5-6400 CL36 Speed
High 6400 MT/s bandwidth with CL36 (36-44-44-102) timings, tuned for high-capacity registered modules on workstation platforms.
On-Die & Side-Band ECC
Combines DDR5 on-die ECC with registered side-band ECC for robust error detection and correction during sustained, mission-critical work.
One-Click AMD EXPO
Enable EXPO in the BIOS to apply the rated 6400 MT/s profile automatically on compatible AMD workstation systems — no manual tuning.
Technical Specifications
Frequently Asked Questions
Expert Insight
Singular Expert Insight
T5 Neo is G.Skill’s AMD EXPO registered-ECC line for serious workstations — think Threadripper render, simulation and AI stations that need both huge capacity and error correction. It is a different class from consumer UDIMM kits like Flare X5 or Ripjaws S5, which do not fit registered-memory boards (and vice versa). If you don’t need ECC/registered memory, a standard DDR5 UDIMM kit is the right choice instead. Browse our Memory / RAM category for other DDR5 kits and workstation components.
Buyer’s Guide
Buy it if
You run an AMD Threadripper / workstation platform and need 256GB of DDR5-6400 registered ECC memory with EXPO.
Skip it if
You have a standard AM5 or Intel desktop — those need unbuffered (UDIMM) memory and won’t accept registered ECC.
Also consider
For consumer desktops, a Flare X5 or Ripjaws S5 UDIMM kit; for even more capacity, higher-density T5 Neo kits.
Features - G.Skill - F5-6400R3644E64GQ4-T5N
Colour
black
More Details
Product Code
04:568275
EAN Code
4711549510849
Manufacturer
G.Skill