AMD or Nvidia video cards? More information would be helpful. If its Nvidia cards probably (no 100% sure though) and if its AMD cards 1 if you are lucky.
Zero is right. ATi with the new beta7 client still require a fair bit of CPU horsepower. Hopefully this gets fixed as the client matures but NV is the only way for you to go with that CPU.
![[H]ard|Forum](/styles/hardforum/xenforo/logo_dark.png){kind=logo}