I'm going to build a gaming PC, but I'm stumbled on the processor; I've seen mixed responses. I'm going to be using either a GTX 660ti or a GTX 670 graphics card. For the processor, it's between the 3570k and 3770k. These two because they're both on sale at Microcenter; the 3570k is about $190 and the 3770k is about $230. Is it worth the $40? I know the 3770k is priced the same as if I were to buy the 3570k online.
Popatim is correct. Only difference is the hyper threading. 3770k has it, the 3570k doesn't. As far as I know, there are no games that benefit from hyper threading. Mainly applications like Photoshop and CAD see benefits. Along with compressing, decompressing, and video encoding.
I opted to save the money and went with a 3570k with my build and spent the extra money on a better graphics card.