The IPC increase seems to be coming from the microarchitecture, not the process. The Anandtech article includes a breakdown: https://images.anandtech.com/doci/

The IPC increase seems to be coming from the microarchitecture, not the process. The Anandtech article includes a breakdown: https://images.anandtech.com/doci/16148/1%20Slide%206_575px.jpg https://images.anandtech.com/doci/16148/1%20Slide%206_575px.... +2.7% Cache Prefetching +3.3% Execution Engine +1.3% Branch Predictor +2.7% Micro-op Cache +4.6% Front End +4.6% Load/Store