Question Hello guys im wondering whats the problem of my dell vostro i510thgen 4gb ram gpu is unknown

[OtakuSensei]

well this laptop is so lagging, I mean when you open edge without nothing just edge it will take a minute to load and I installed cpu-z like my friend told me there's a problem in my laptop when he checked he saw my ram is 665mhz and the uncore is 3500mhz then a couple of seconds it change to 1300mhz then go back to 600mhz can someone help me if their a problem or my dell laptop is just so slow that even edge can open in seconds. THanks

 

[OtakuSensei]

https://imageshack.com/i/pnQsCGo9g
https://imageshack.com/i/pmi6TPPCg
this is the photo of the ram in cpu-z