The i7-7700k runs at a turbo frequency of 4.5GHz. Thats 10% faster than the maximum frequency of the X1800. The rest of the performance gain is better IPC. However the i7700K also has a TDP of 91W which is almost the same as the 95W TDP of the X1800. If intel doubles that chip it will melt down unless they scale back the clock speed. And you wind up with something that performs less than the i7-9600 which performs at about the same level as the X1800. So nope, not going to happen any time soon. What I'm wondering is what will happen with the release of the 4 core Ryzen processors. Will the reduced power requirement allow AMD to up the clockspeed to a level where they beat the i7-7700K ?