What is the exact model name of your processor?
i3 -xxxx
if the digits start with 5 or lower -> DDR3
if it is something like i3-8600 or i3-7300 -> DDR4
i think the more relevant question is the exact model of the Dell system?? The processor although important does not give the information to advise on adding more ram.
i think the more relevant question is the exact model of the Dell system?? The processor although important does not give the information to advise on adding more ram.
The mobo is key, not necessarily the processor.
@OP
Could you please let us know your motherboard model name?
https/www.howtogeek.com/208420/how-to-check-your-motherboard-model-number-on-your-windows-pc/