@Carl Thanks for the reply. I'm not sure I understand exactly what you are referring to by the link rate on the PC.

I believe I confirmed that the ethernet port is 10/100/1000. I did this by going to Network Connections > [Ethernet Port Name] > Properties > Configure [Ethernet Port Name] > Advanced > Property: Speed and Duplex > Value: [Confirmed it is set to Auto Negotiation, and options are in the list for 10mbps, 100mbps, and 1gbps].

  @Carl 

Got it, thanks. It is listed as "Speed" for me (same as your screenshot), so the terminology threw me off.

I am currently at work, and connected to my work's network. While here, my speed/linkrate is 1.0 gbps. Once I am home later and able to connect to my home network, I will double check and confirm the linkrate from there.

Question: is it possible for the linkrate and measured internet speed to be different? In other words, could I have a link rate of 300mbps, but a measured internet speedtest of 90 mbps? Or will those measurements generally be the same?

Also, I presume your line of questions was to confirm whether my computer is physically capable of handling a higher connection speed, and it appears that it is.