>>714367242the big number is the speed (6000) and the other number is the latency (cl30) there's a bunch of complicated reasons why a higher/lower number isn't always better depending on the CPU.
wankers will also manually tune them by 10's of mhz to match the timings perfectly to get 1 more fps in csgo, but you dont need to do this.
I would just look at what most other people recommend for your CPU, which I'm pretty sure is 6000 cl30 for a 9800x3d, and then buy the cheapest reputable brand.