How many cfm is a 120mm pc fan push?

I use desk fans now are pc fans better i know there more quiet but hows the cfm? Pic of my fan below

There's now way to tell from pictures. Find your fan online and look at the manifacturers specs. One 120mm might be much more powerful than another

thats nt what i have i just wnated to ask if anyone had any idea how many about

Umm the answer is still the same. Look at manufacture specs. There can be big differences from one to another

sounds good