my bot consume 1.2 gb ram per bot and im using ddr 2....so 16gb for 10 bots should be enough , as a processor in games i5 is better than 8 core amd fx , so go for i7 ( u dont need oc for 3th generation) , as a power supply u wont need more than 500 w power supply but make sure they are real W , when u read that gpu needs a 600-700 w is bullshit , is all marketing , a computer like this consumes maximum 300-400 w ( REAL W ) , trust me i work in IT and made configurations of i7 3th with 6990 vga cards and supply power of 450-500 w ( chieftec are the most realiable and good price ) as a motherboard get the cheapest that support your cpu / memory ( buy standard ddr 3 ) dont get OC's ones...u will get a lot of bluescreens in the end if u buy OC's memory's , and buy a SSD ( + a crap hdd 1 tb) and u will see that your comp will fly with 10+ bots