Intel Alder Lake to feature Performance & Efficient Cores, Intel Thread Director scheduler unveiled

Published: Aug 19th 2021, 13:00 GMT   Comments

Intel Alder Lake to feature Performance & Efficient Core, new hybrid scheduler

Intel is ready to talk about its first high-performance hybrid architecture, “Alder Lake for desktop and mobile computers.

The first official specifications of the 12th Gen Core “Alder Lake-S” series are in. The architecture is to offer a new iteration of Intel Hybrid Technology featuring high-performance cores (called Performance Cores or P-Cores) and high-efficiency cores (called Efficient Cores, or E-Cores). Of course, alternatively, we can refer to those types of cores as big and small/little because such an approach in CPU design is not new but commonly used in mobile devices.  However, bringing Efficient Cores to desktop devices certainly is.


The architecture is to be offered in three different configurations, including 8 Performance Cores with 8 Efficient Cores, 6+8, and 2+8 configurations. Intel Alder Lake SKUs will therefore span from high-end desktop LGA1700 series all the way down to ultra-mobile devices. The flagship desktop SKU will be equipped with 16 cores and 24 threads since E-Cores do not support hyper threading.

Alder Lake CPUs will feature three types of Fabrics: Compute Fabric, I/O Fabric, and Memory Fabric. The details are not quite here yet, but one would assume that Compute Fabric will be comparable to Infinity Fabric building block, which is Scalable Data Fabric (SDF), while I/O Fabric can be compared to Scalable Control Fabric (SCF).

Intel also confirms its Alder Lake processors will support PCIe Gen5 interface up to 16 lanes, just enough to support next-gen GPUs with support for new interconnect standards. The CPU will also have four Gen4 lanes, totaling 20 lanes for the CPU itself. The 600-series chipset will additionally offer x12 PCIe Gen4 lanes and x16 PCIe Gen 3 lanes.

Intel is providing more details on its Efficient Cores. A quad-core configuration should offer 80% more performance than a dual-core Skylake CPU and require 80% less power at ISO performance (the same frequency).

Additionally, Intel confirmed their Alder Lake CPUs will feature a hardware thread scheduler that will communicate with the OS scheduler. This technology is called Intel Thread Director and it will dynamically adapt based on thermal and power settings.

Source: Intel Architecture Day 2021

Comment Policy
  1. Comments must be written in English and should not exceed 1000 characters.
  2. Comments deemed to be spam or solely promotional in nature will be deleted. Including a link to relevant content is permitted, but comments should be relevant to the post topic. Discussions about politics are not allowed on this website.
  3. Comments and usernames containing language or concepts that could be deemed offensive will be deleted.
  4. Comments complaining about the post subject or its source will be removed.
  5. A failure to comply with these rules will result in a warning and, in extreme cases, a ban. In addition, please note that comments that attack or harass an individual directly will result in a ban without warning.
  6. VideoCardz has never been sponsored by AMD, Intel, or NVIDIA. Users claiming otherwise will be banned.
  7. VideoCardz Moderating Team reserves the right to edit or delete any comments submitted to the site without notice.
  8. If you have any questions about the commenting policy, please let us know through the Contact Page.
Hide Comment Policy