The best resources for determining the memory you should use in your specific model of computer is the manual that came with your computer. This will detail the memory specifications of your system.

PNY offers a configurator which can help you find the PNY memory models that will work with your system. You can find the configurator here: https://www.pny.com/consumer/resource-center/memory-configurator#/

Alternately, you can reference task manager, under the “Performance” tab, the memory section. This will indicate the amount of memory and frequency speed in your system.