at least the part no like u said looks the same as my old no?

i am not sure if the old one is in slot 1 or slot 2. but i guess below one should be my old RAM.

..

the new 8GB ram i bought it from a shoppe seller. seems like i kena conned?

..

to be fair, like u said, the new ram is working which it is recognised in windows 10 and i had used the Windows Memory Diagnostic Tool and it shows no error.

what other memtest i can do?

yes, the black one is the new one i got from shopee. the shopee seller claimed that it is brand new and not even refurbished.

my main concern now is that if it is not even genuine kingston ram but counterfeit instead.
if yes, i would rather refund it. so i need to really confirm if it is genuine.
if it is not genuine kingston ram but really a fake one. it may work now but sooner or later it will fail i guess.
the warranty of this new ram is also not lifetime, but it is 1 year warranty by the seller. so this is also fishy.

is there any other way i can really prove if this ram is genuine or not?