Originally Posted by JNUKZ
Its mainly for 3D applications, he is using a GT540M and usually dont have problem, well sometimes crashes and screen stop responding
But did he ever try a workstation card and see if he can benefit from it? I had major issues with Solidworks (driver and performance problems) until I got myself a workstation card and have no crashes with great performance.
I think you should really consider it (first check if the programs actually benefit from it which I think they do), even used cards are usually in good condition since they were used in workstations and aren't overclocked.
But if there is no benefit (or it's not that important) then a guess a normal GPU should do good, but just keep in mind that pretty much all 3D can be done on the GPU so it's sometimes more important than the CPU