RAM STICK MIXING HELP

[Joolez]

so I have two sticks of 8gb 2666Mhz DDR4 memory on my Pc and I want to upgrade to 4 sticks, but the model that I have (Ballistix Sport PC4-21300) is no longer available in a retailer that is near me, so I was wondering if I can add 2 sticks of HyperX Fury 8GB 2666MHz DDR4 CL16 DIMM 1Rx8 Black XMP
to my PC without issue, since they're both the same size and frequency.

I'm running a PC with Ryzen 2600 Gen 2

 

[Oussebon]

What do you use the PC for? Why do you feel 48gb RAM rather than your current 16gb would be beneficial?

What's the full spec of your system?

 

[Brian Boru]

Why do you feel 48gb RAM rather than your current 16gb would be beneficial?

It's 32gb he's looking at—2x8 now, and 2x8 proposed.

 

[Oussebon]

Good spot, though the OP was looking at 16gb sticks for some reason.

The questions still stand however.