http://www.ebay.com/itm/Borland-Turb...UAAOSwTM5Y5F0i
For someone who wants pure speed you should get Borland Turbo Assembler plus the manuals for programming in DOS!!!
Ever seen how in Quake the scenes are so fast? Well it is done half in C and the speed part is done in Assembly from what I know. All I know is assembly language is use for speed while c is use for flexibility and ease of complex routines.