A PC can not currently contain 4 pebibytes of memory ( due to the physical size of the memory chips ) .
AMD envisioned large servers , shared memory clusters , and other uses of physical address space that might approach this in the foreseeable future .
A PC can not currently contain 4 pebibytes of memory ( due to the physical size of the memory chips ) , but AMD envisioned large servers , shared memory clusters , and other uses of physical address space that might approach this in the foreseeable future .