30 Computers running these Stats:

Power Supply The Corsair RM series 700 watt PSU's
Graphics Card Evga GeForce gtx 960 SSC 4gb
Tower Rosewill gaming case 5 fan option
Motherboard MSI z97
Processor intel i5 4690k quad core
Ram corsair vengeance ram 8gb 1600mhz
Keyboard E-Blue Combatant
Mouse Zelotes Opitcal mouse
Head Set Sades SA-708

basic set up. not too cheap but perfect to run the newest games
also i need a good idea for a HDD i need something that will perform well because i dont want to buy 30 SSDs for these computers i dont need a fast boot drive. just something that will load fine but run these games well. i heard black drives are good. i believe 750 Gigabytes will be fine. im only running maybe 15 to 20 games at my shop.