Processing speed may depend somewhat upon the software but primarily upon the hardware. That is simply why federal and military agencies spend a fortune on supercomputers. I shoot everything Raw and JPEG large maxed out. My do-it-yourself system with Intel i7 Sandy Bridge 3.2 GHz processor, Asus Rampage IV Formula mobo, dual 250 GB SATA III SSD in Raid 0, and 32 GB DDR3 memory make post processing any D800 file essentially instantaneous. Set a budget, seek out the neighborhood 20-year-old video gamer geek, and have him build you a system which will surpass anything for the dollar you can buy at any retail outlet.