Question mixing ram with prebuilt. help

[loggylizar]

got a prebuilt gaming pc for christmas, and I've been extremely satisfied with it. Every game I play I run fine except Rust. probably because some of my ram is rerouted so i only have like 5.9gbs usable and my motherboard doesnt let me reroute ram or overclock. so I ordered a new 1x8 stick of ram since I knew it'd fix my freezing on rust. so i found a stick of ram that had the same speed since that was the only thing I knew about my ram, so i ordered this stick of ram and was wondering will it be compatible. i cant really afford two sticks of ram so i have to criss cross ram if this isnt compatible would you know one that is

the ram:
https://www.newegg.com/Product/Product.aspx?Item=20-232-086&Ignorebbr=true

my pc:
https://www.walmart.com/ip/HP-Pavil...hguid=c28ea0f3-775-169e44bd27d345&athena=true
specs:

AMD Ryzen 5 2400g proccesor

ddr4 2666mhz sdram (1x8)

AMD Raedon RX 580 with 4gbs of GDDR5 dedicated memory

 

[SgtScream]

It's generally bad practice to mix kits of even the same make and model let alone from different manufacturers. However it is possible to work out in your favor but you'll have to try it. Worst case scenario make sure the vendor has a return policy and make use of it.