PC gamers and power users sometimes sneer at Intel’s E-cores because they aren’t as fast on a single thread as the company’s powerful P-cores. Demanding client tasks—like many operations in creative applications as well as, of course, games—tend to be single-threaded, or at least held up by a single slow thread. In that case, having super-fast
Source: Hot Hardware – Intel Details Sierra Forest Many-Core Xeons For Maximum Core Density In The Cloud