There Are Pandas, and Then There Are Pandas.
And this isn't either of them! The Pandas we're talking about here, are watches, not bears. And what got me thinking about them (again) was a link posted this morning by @cm.rook who pointed a few of us to the very attractive (and not terribly priced) Yema "Rallygraph" Panda which, in it's most traditional arrangement, looks like the one on the left, but can also be had in the version on the right: The model on the left is a true Panda, while the model on the right is called a reverse Panda. The reason for that distinction is clear--Panda bears, only come in the first arrangement. Now at this point, everyone should be thinking about the most well-know Panda, The Rolex Panda, which is actually a Daytona, and among Rolex Daytonas, the most famous of which is the Paul Newman Daytona, which was famous first, because it was Paul's, and second because it sold at auction for $17.8 million (US Dollars). The story of that auction is well-known so I'll only...
Nov 8, 2019
If intel with 2 dimm slots, try 1x8GB to see if that's enough for the time being.
If Ryzen then you either should get 2 dimms to run dual channel as you'll see the benefit.
If you have 4 dimm slots I would get a 2x4GB kit and see how you go with it.
8GB is still a lot of RAM, especially if you have an SSD.
Just my opinion
A 250GB size for your OS and a few games is ideal, you can always add more RAM down the line.