Welcome to the Dell Community @Super098
You would need to add 2 matching pairs of 8GB for a total of 16GB.
You would need to add 2 matching pairs of 16GB for a total of 32GB.
What is Dual-Channel Memory???
It's hard to say when and if mismatched memory will work in a system.
Especially if the manual does not reference that memory configuration???
4GB + 16GB total 20GB
Then the question becomes "Why"
Just add 2 matched pairs of 8GB and take advantage of the "Dual Memory"
If not install the extra 16GB and let us know if the configuration of 4GB + 16GB works.
Best regards and good luck,
To run your system in dual channel mode I would suggest you install two RAM sticks of 16 GB each.
Your system will not run in dual channel mode if you have a 4 GB and 16 GB stick in your system.
So remove the 4 GB stick from your system and install two 16 GB RAM sticks.
Grand Theft Auto V PC System Requirements:
Minimum System Requirements:
Recommended System Requirements:
Again add 2 matched 8GB total 16GB is still twice the recommended requirments.