How to choose memory for the server?

Question

Server equipment

There is a new server from supermicro, in which there is not enough memory.
On the site in support of the mother, specific tested memory bars are indicated that will work 100%.
The problem is that 1-3 bars are indicated for each type of supported memory and volume, and the stump is clear, if they are on sale, then in one copy on Amazon or somewhere else far away.
How to choose a bar in the store that will fit the server in terms of parameters?

Answer 1

Once I bought a used server here - Shop used servers . The dudes seemed smart and adequate to me, I think you can consult and buy from them (and if you are a lawyer, then you can also get Russian-style documents)