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Eight green DDR5 RDIMMs with black heat spreaders and copper micro heatsinks

V-color

V-color WRX90 OC R-DIMM 128GB (16GBx8) DDR5 6600 CL34 1.4V ECC Registered AMD EXPO

SKU CH-77E6-A2SRP

An 128GB DDR5 RDIMM kit of eight 16GB modules running at 6600MHz CL34 with ECC and AMD EXPO for Threadripper WRX90 workstations

  • Capacity128GB (8 x 16GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6600 (PC5 52800)
  • CAS LatencyCL34
  • Timing34-46-46-92
  • Voltage1.4V

Capacity 128GB (8 x 16GB)

Speed DDR5 6600 (PC5 52800)

  • ECC safeguards data integrity on critical workloads
  • 128 GB capacity handles large datasets and virtualization
  • DDR5 6600 CL34 timing accelerates memory-bound tasks
  • Patented RCD and PMIC micro-heatsinks lower module temperatures 30-40%
  • AMD EXPO profile enables one-click overclocking on WRX90 platforms

WRX90 workstation memory kit

This 128 GB kit delivers eight 16 GB DDR5 registered DIMMs built for AMD Threadripper PRO 7000 series workstations. ECC protection and registered buffering keep data integrity intact during sustained compute loads. The modules target professional users who need maximum capacity on WRX90 motherboards.

AMD EXPO 6600 MT/s profile

The single specification that decides fit is the AMD EXPO profile rated at 6600 MT/s with CL34 timings at 1.4 V. WRX90 boards must support this exact EXPO profile for the kit to run at its rated speed without manual tuning. Systems limited to lower JEDEC speeds will not reach 6600 MT/s automatically.

Straightforward DIMM installation

The 288-pin RDIMMs seat like standard DDR5 modules; align the notch, press evenly until the latches click, and enable the EXPO profile in BIOS. The only common issue is populating all eight slots on a WRX90 board that has not validated the full 128 GB EXPO configuration, which can prevent the profile from applying.

Highlights

  • ECC safeguards data integrity on critical workloads
  • 128 GB capacity handles large datasets and virtualization
  • DDR5 6600 CL34 timing accelerates memory-bound tasks
  • Patented RCD and PMIC micro-heatsinks lower module temperatures 30-40%
  • AMD EXPO profile enables one-click overclocking on WRX90 platforms

Specifications

BrandV-Color
SeriesWRX90 OC R-DIMM
ModelTRA516G66S834O
Part NumberTRA516G66S834O
Capacity128GB (8 x 16GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6600 (PC5 52800)
CAS LatencyCL34
Timing34-46-46-92
Voltage1.4V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
BIOS/Performance ProfileAMD EXPO
ChipsetSK Hynix IC
Heat SpreaderYes
Compatible SystemAMD Threadripper - WRX90 Workstation Motherboards
FeaturesEquipped with patented exclusive RCD and PMIC Micro-Heatsink for improved cooling efficiency.

Other versions of this model

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

Questions about this item

What does the 6600 MHz speed mean once the kit is installed in a WRX90 workstation?

The modules run at DDR5 6600 (PC5 52800) with AMD EXPO, delivering the rated frequency on Threadripper PRO 7000 series CPUs without manual tuning.

How does the registered ECC design and 1.4 V voltage affect stability on a WRX90 board?

Registered buffering and on-die ECC protect data integrity at 6600 MHz, while the 1.4 V EXPO profile stays within the platform's supported voltage range.

Will the 288-pin RDIMM sticks with the micro-heatsink fit my WRX90 motherboard's DIMM slots?

Yes — they are standard 288-pin DDR5 RDIMMs with a low-profile copper-alloy micro-heatsink designed for WRX90 workstation boards.

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