NEED to buy A PC!!!!!for CFD..need specifications!

yogi

hi all cfd-gurus!!! well..finally i am on the onerous task of writing my own program for CFD.. and thus need to buy a PC(no budget for a workstation!! ) which would be enough for my requirements.. would give a brief summary of the program.. its a eulerian cartesian structured grid having about 500*500 grid points and would be solving turbulent coupled equations with the usual navier stokes equations using the finite difference method.. thus need the best PC specifications.. would go in for the latest PIII comp ..but need some help with the RAM required and the CACHE needed and other stuff.. so if u could suggest the best configuration ..it would help me in getting a brief idea of what i am looking for. thanks for all and...regards yogi