Wanna upgrade memory but dont know which mhz it is.?

[hrgamer]

Hey , i want to upgrade my ram as i have 8 gb to 16 gb for gaming but i dont know how much mhz ram i have cuz if i install a random ram it will be disaster so if anyone know how to check it
And yus i have CPU-Z
Bt in that it show 800 dram
And i have 8x1 slot
0x3

 

[DRagor]

Screenshot from cpu-z (SPD tab) would help.