A second stick basically doubles your FPS in Valorant.

Yes. You will notice a big jump. Single-channel RAM is bottlenecking your CPU in eSports titles, and adding that second stick unlocks the memory bandwidth those games depend on.

Valorant and similar games are CPU-bound, and the CPU hates running in single-channel mode. It’s like having a fast car but only one lane to drive on. With dual-channel (two sticks), the CPU can read and write data simultaneously. The difference in minimum FPS is often 30–50% or more, which makes stuttering disappear in teamfights.

You already have the right speed (DDR4-3200). Just match the stick as closely as possible—same brand, same timings if you can. If not, most systems will auto-adjust to the slower stick, which is still miles better than single-channel.

This is the cheapest performance upgrade you can make for eSports. Do it.