[gmx-users] GXT690 vs GTX Titan black

[Albert]

Hello:

I am going to purchase some GPU workstation and each of them will have 3 
dedicated GPUs. I am thinking about GTX690, GTX980 or  GTX Titan black. 
My system is usually typical biological ones which contains atoms at 
range of 60,000-100,000  (full) atoms, and I usually use CHARMM or Amber FF.

Does anybody have any idea which one would be better for my case?

Thanks a lot.

Albert