Can I Added RAM Server Up to 72GB in Windows Server 208 R3 Standart 64 bit

Good Afternoon
I Want to ask about Server Dell Power Edge T710

Now while the installed RAM is now on the Server That is 32GB
8 Slots Already installed with 4Gb RAM capacity of slot
 
While there are still 10 Slot not yet installed RAM
For windows server I use Windows Server 2008 R3 Standard 64 bit
 
I want to ask is that it can still not well RAM Server added
Because Standart Max Ram Windows server 2008 R3 standard 64 bit is 32Gb RAM ???
I want to plan Up RAM Server up to 72Gb?

 
Thank you