He wants to do video editing!!!
A 50% slower CPU or a single core instead of a dual or dual instead of a quad is night and day difference in video editing!!!
 
With all due respect, video editing on a PC platform was pretty tough in the early to mid 90's.  These days it shouldn't be a big deal.  You want fast drives, a good video card, and plenty of memory.  CPU shouldn't be a big deal.  The people pushing for the greatest and fastest are the people making a living designing, building, and selling PC's and processors, and writing about the same, or those writing really lousy software. 
PC's are a commodity, and a disposable one at that.  They're just a tool.