While some of the above information isn't new, the leaked document does explain Prescott's new instructions in detail, with pretty diagrams and everything. The revelation that Prescott will have a deeper pipeline to enable higher frequencies is also new.
- Support for Hyper-Threading (HT) Technology
- Prescott New Instructions support
- Deeper pipelining to enable higher frequency
- A High-speed System Bus
Making the Pentium 4's already deep pipeline even deeper should help Intel win over consumers with astronomical clock speeds, but a deeper pipeline will also carry greater branch prediction penalties. Larger caches, a faster system bus and a new branch prediction unit could help Prescott's IPC, but it will likely be months before we know for sure.