PC got this here, look at their settings:
CPU-intel core i5-3570 CPU 3.40ghz
RAM- 8gb ram (2x 4GB ram Kingston)
gpu- gtx 660
motherboard- Asus P8H61-m evo
hard disk- 1tb hd
so- WINDOWS 8 pro
Do you think I should buy the DVD S Leopard direct from the Apple Store, or buy a bootable USB sticks...