DDR4 2666Mhz
I installed this kit to be in line with the recommendations of the GTX graphics card manufacturers in my case.
I had an equivalent kit of the same series in 2x4GB with the same frequency because my processor does not support speeds above 2666 Mhz.
It is a kit of 2 bars that I installed by replacing the old ones.
It is perfectly suitable for my use.
I am very pleased with the service and the quality of the product.