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Trying to figure out if memory is compatible with mother board

Today I swapped out a 1 GB DIMM for a 4 GB DIMM in my desktop, booted up, and everything seemed fine. Even ran a Windows Memory Diagnostic test just to be sure (it passed). But then about a couple of hours later I started running into really weird networking issues where I had not had any issues before. Couldn't even ping the default gateway and yet all the other machines on the network were fine. So I then suspected that the memory upgrade might have something to do with it and pulled out the new DIMM and fired the machine back up. Haven't seen any networking issues since it was pulled.

So even if it's not working in practice, I still want to decipher if the memory I bought should work with my PC in theory. When I bought the memory, I pulled one of the sticks that the box was shipped with and took it into the store to show the salesman. He told me that they didn't have any memory in stock with the exact same characteristics, but they had one that was faster. Since this is a recently purchased, fairly high-end machine, I figured it should be able to handle the higher speed.

Before posting here I ran the memory tool on crucial.com and here's the page that came up for my machine model:

Here is some of the code off of the memory stick that I just purchased:
1600MHz 4GB (1X4GB) 7-8-7-20 1.65V ver5.11

Any general information that people can provide would be great.
At the moment I do have one specific question:
The crucial page mentions that my machine supports DDR PC3-10600 and DDR PC3-8500. I think the #s 10600 and 8500 refer to speeds, and if so, how do you compare these numbers to the 1600MHz that is printed on the new stick?
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Gary Case

8/22/2022 - Mon