“Ping times” are a measure of network latency, which represents how fast even the smallest packets of data can travel from your computer to their destination. You can measure your ping times using online tools like Speedtest.net, and for online gaming, low ping times—less than 100ms—are far more important than raw speed, since game traffic isn’t about moving a lot of data so much as it’s moving many smaller pieces of data as quickly as possible. Just keep in mind that while the best gaming routers can significantly reduce ping times, they can't eliminate the latency you'll get from your ISP.