The PC linked below lists 2 memory sizes: Memory Size (Individual) 8192 MB Memory Size (Total) 16384 MB Does this just mean it comes with 8192 MB but the memory slots have the capacity for 16384 MB should you decide to add more memory, or does it mean it has 2 slots of 8192 MB and so comes with 16384 MB already fitted? Or am I missing something? http://www.cclonline.com/product/87881/TCM-1/All-CCL-Desktops/TCM-120-Pro-Gaming-PC/TCM-1/ Thanks.