problem with my os

[Tharindu Panadura]

I have gigabyte r7 260x oc 2gb gpu.In the win 7 it displayed my graphic memory is 768mb. Recently i ve changed my os to win 8.1.Then it 's displaying my graphic memory 4844mb. So why didn't my win 7 display correct graphic memory?(my english isn't good.sorry)

 

[logainofhades]

Win7 was probably 32 bit version.

 

[Tharindu Panadura]

no it's a 64bit version.

 

[Tharindu Panadura]

Win7 was probably 32 bit version.

 

[Tharindu Panadura]

no it's a 64 bit version