Computer Memory Solutions 128GB (4x32GB) DDR4 2666 CL19 1.2V 288-Pin DIMM memory upgrade

128GB DDR4 2666 kit for ASRock boards

This 128GB kit contains four 32GB DDR4 2666 modules built for ASRock X570 Taichi, X570M Pro4, Z490 AQUA, Z490 Extreme4 and Z490 PG Velocita motherboards. It targets users who need the full 128GB capacity across four populated slots for memory-intensive workloads. The modules run at 1.2V with CL19 timing and use unbuffered non-ECC 288-pin DIMMs. Buyers who want ECC error correction or registered modules should look elsewhere.

Tool-free DIMM installation

Each stick inserts vertically into a 288-pin DDR4 slot until the retention clips click; no screws or cables are required. The supplier recommends installing modules in matched pairs to maximise performance, and notes that mixing different modules forces all memory to run at the slowest installed speed. Because the kit fills all four sockets, there is no room for future expansion without removing existing sticks. The heat-spreader-less design keeps the profile low but offers no extra thermal surface.

Verify four-slot layout

Confirm your motherboard is one of the five listed ASRock models and that it provides exactly four DDR4 DIMM slots, because this kit occupies every socket. A 64-bit operating system is required to address more than 4GB of memory, so 32-bit environments cannot use the full capacity. The modules are rated at DDR4 2666 (PC4 21300) with 19-19-19 timings; the system will default to the lowest common speed if other memory remains installed.