Yes it does. http://techreport.com/articles.x/20241 as you can see, they have half speed bandwidth. and look at the benchmarks at the bottom. SSDs benefit greatly from the full speed P67 pcie slots.
i7 2700K, even at stock clocks, is more than 5-8% faster. An i5 2400 is upwards of 20% faster in gaming.
Yes I know the 2700K is faster normally ! that was the reason why I wanted one in the first place, but upon investigating what the overall gaming performance would be at 1920x1200 and max AA it was obvious that the performance differece at these settings were so minimal - since at these kind of setting it's the GFX's that do all the load. Of course there are some CPU bound games like WoW and other RTS games, but those games aren't my interest. Then there is some DX9 games like TF2 which can be CPU bound. Yes that is correct, but I was thinking in terms of gaming performance.