$1k is a generous budget.
Something along the lines of:
8GB 2x4GB RAM 1600MHz CL9
GTX 560Ti or 6950/6970
Mid-Tower case (full tower isn't necessary)
$1k Budget will get you much better than "minimal" you should be able to build yourself a system that can play BF3 in all its glory.
yup Great only dif was I was with GTX460 & EVGA P67
Thank you for the input makes me search and compare more for future compatability issues
Best regards & Merry Christmas