atomicWAR :
if you overclock the 860k is the better choice if not the 845 has better stock performance.
I'm not sure on that. If Passmark is accurate, then the X4-845 is about 11% faster for single thread.
You'd have to basically overclock the X4-860K to 4.4GHz to get similar performance. That's also going to require a good CPU cooler and motherboard if he doesn't have both already.
So I'm not sure if there's any point to the X4-860K, and either way the CPU fan noise would be a lot lower on the 65W CPU especially if it's not overclocked and the X4-860K is.