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Four black DDR5 RDIMM modules with silver heat spreaders, 64GB kit

V-color

V-color OC R-DIMM DDR5 64GB (16GBx4) 6600MHz CL34 ECC Registered 1.4V AMD EXPO

SKU CH-TMDX-8MRAP

64 GB quad-channel DDR5 kit with ECC registered modules at 6600 MHz CL34 for TRX50 workstations

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6600 (PC5 52800)
  • CAS LatencyCL34
  • Timing34-46-46-92
  • Voltage1.40V

Capacity 64GB (4 x 16GB)

  • 64GB (4 x 16GB)
  • 128GB (4 x 32GB)
  • 192GB (4 x 48GB)
  • 256GB (4 x 64GB)
  • 512GB (4 x 128GB)
  • 1TB (4 x 256GB)
  • 384GB (4 x 96GB)

Struck-through versions exist but are not stocked here.

Speed DDR5 6600 (PC5 52800)

Struck-through versions exist but are not stocked here.

Rank 1Rx8

Struck-through versions exist but are not stocked here.

  • 64 GB capacity across four 16 GB modules for large workloads
  • DDR5 6600 MHz speed with CL34 latency for fast data access
  • ECC registered design protects data integrity in critical tasks
  • AMD EXPO profile enables one-click overclocking on TRX50 workstations
  • Hynix ICs on 10-layer PCB tested by automated sorting for reliability

64GB DDR5 RDIMM kit for TRX50 workstations

This 64GB kit contains four 16GB DDR5 registered DIMMs rated at 6600MHz with CL34 timings. It is built for AMD Threadripper PRO 7000 series processors on TRX50 motherboards and uses AMD EXPO profiles for automatic configuration. ECC and registered buffering protect data integrity in professional workloads.

Sustained load behaviour with on-board PMIC

The on-board PMIC manages power delivery across each module during extended compute tasks. Hynix ICs are tested with automated sorting equipment on a 10-layer PCB to maintain stability at 1.40V. On-die ECC adds a second correction layer that keeps error rates low when the memory runs continuously at 6600MHz.

DDR5 channel architecture limits

Each DIMM provides two independent 40-bit channels that double the theoretical bandwidth compared to DDR4. The registered buffer adds one cycle of latency but allows the memory controller to drive four modules at 6600MHz without signal degradation. EXPO profiles are validated only for the TRX50 platform.

Highlights

  • 64 GB capacity across four 16 GB modules for large workloads
  • DDR5 6600 MHz speed with CL34 latency for fast data access
  • ECC registered design protects data integrity in critical tasks
  • AMD EXPO profile enables one-click overclocking on TRX50 workstations
  • Hynix ICs on 10-layer PCB tested by automated sorting for reliability

Specifications

BrandV-Color
SeriesOC R-DIMM
ModelTRA516G66S834Q
Part NumberTRA516G66S834Q
Capacity64GB (4 x 16GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6600 (PC5 52800)
CAS LatencyCL34
Timing34-46-46-92
Voltage1.40V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
BIOS/Performance ProfileAMD EXPO
ChipsetHynix IC.
Heat SpreaderYes
FeaturesOverclocking R-DIMM ECC Registered DIMM Memory for TRX50 Workstation (AMD Expo)

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How much power does the 1.40 V 6600 MHz kit draw when running all day?

The modules operate at 1.40 V and 6600 MHz; sustained power draw depends on workload and motherboard VRM efficiency, so exact wattage varies by system configuration.

What motherboard and CPU must I already own for these 288-pin RDIMMs to function?

You need a TRX50 workstation motherboard and an AMD Ryzen Threadripper PRO 7000 series processor that supports DDR5 OC R-DIMM with AMD EXPO profiles.

Will the 64 GB kit work alongside older DDR4 memory I keep in the same machine?

No — DDR5 modules are physically and electrically incompatible with DDR4 slots, so they cannot be mixed in the same system.

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