Intel's Core i7-12800H CPUs have 6 Performance (P) cores and 8 Efficiency (E) cores for a total of 14 cores.
The P cores are comparable to previous generation cores. They support Hyper-Threading, which means they provide two threads each.
E cores are focused on adding additional threads in an energy-efficient manner. They take up much less room on the CPU and generate less heat. However, their smaller cache and minimal interconnect capabilities make them more appropriate for offloading background tasks.
The Intel Thread Director handles scheduling between the types of cores.
Running a game will primarily use P cores.
At the same time, the Intel Thread Director may offload operating system tasks and low priority periodic events to E cores.
Which Operating Systems Can Make Optimal Use of the E Cores?
The Intel Thread Director is used to help operating systems determine onto which cores to schedule work.
At least Windows 11 or Linux kernel 5.18 are required to make optimal use of the Intel Thread Director.
Linux support for the Intel Thread Director is included in version 5.18 of the kernel. Some improvements have been backported to earlier releases. Ubuntu 22.04 users can get backported performance improvements in the 5.15.35 kernel.
How Many Threads Does the 12800H Have?
Hyper-Threading is only available on Performance cores. One thread for each of the 8 Efficiency cores plus two threads for each of the 6 Performance cores results in a total of 20 threads.
Prior to Intel's 12th generation of processors, CPUs had a single base frequency and max turbo frequency. With Intel's 12th and 13th generation processors, the Efficiency and Performance cores use two individual sets of frequency values.
The 6 Performance cores have a 2.40 GHz base frequency and support a 4.80 GHz max turbo frequency.
The 8 Efficiency cores have a 1.80 GHz base frequency and support a 3.70 GHz max turbo frequency.
What Does the H Suffix in 12800H Mean?
Processor Name Suffix
"H" means it's an enthusiast, high-performance CPU, optimized for mobile usage. Unlike high-performance desktop CPUs, these mobile CPUs use a lower base frequency to generate less heat and use less power when less processing is needed. H-series CPUs have better performance than both P and U-series CPUs but use more power.
The 12800H model name doesn't have a K or X suffix, which means that it can not be overclocked.