IBM had a unique process call silicon-on-insulator that gives you something like an extra step in moore's law with regards to power and speed(but not cost). They also had their EDRAM technology , which is much more efficient memory type for cache.

This enabled them to build a huge(100MB) and fast(3TB/sec) L3 cache in their processors. This is something that could give a huge boost for many kinds of applications, for example databases d\and machine learning.

While intel has some edram capability, i haven't seem them release an integrated edram with the processor, not sure why.

And let's not forget, IBM now licenses the design for it's beast of a processor, the power8 ,in a modular format, enabling chip companies to easily add accelerators and innovate.

So it would be very interesting what intel's competitors will build with all those capabilities. I'm getting the popcorn.