Intel "Alder Lake" Silicon Variants Detailed—Reunification of the Product Lines
The 12th Gen Core "Alder Lake" microarchitecture will see Intel unify its desktop- and mobile processor IP, back to the way things were up to the 9th Gen. With its post-14 nm silicon fabrication nodes in their infancy, Intel had diverged the client processor IP across its 10th and 11th Gen Core. With 10th Gen, the company introduced "Ice Lake" for ultra-portable platforms (28 W and below), while retaining 14 nm "Comet Lake" for mainstream notebooks (28 W to 45 W); while keeping desktop exclusively with 14 nm "Comet Lake." For 11th Gen, the story is mostly similar. Cutting-edge 10 nm "Tiger Lake" now covers all mobile categories, while desktop receives an IPC upgrade, thanks to the 14 nm "Rocket Lake." The 12th Gen will see a common microarchitecture, "Alder Lake," span across all client segments, from 7 W ultra mobile, to 125 W enthusiast desktop.
This, however, doesn't mean that Intel has a one-size fits all silicon that it can carve SKUs out of. The company has developed as many as three physical dies based on "Alder Lake," which vary in CPU core counts, the size of the iGPU, and other on-die components. "Alder Lake" is a hybrid processor with a combination of larger "Golden Cove" P-cores, and smaller "Gracemont" E-cores. The P-cores are spatially large, and along with their L3 cache slices, take up a large share of the compute portion of the silicon. The E-cores come in clusters of 4 cores each.
This, however, doesn't mean that Intel has a one-size fits all silicon that it can carve SKUs out of. The company has developed as many as three physical dies based on "Alder Lake," which vary in CPU core counts, the size of the iGPU, and other on-die components. "Alder Lake" is a hybrid processor with a combination of larger "Golden Cove" P-cores, and smaller "Gracemont" E-cores. The P-cores are spatially large, and along with their L3 cache slices, take up a large share of the compute portion of the silicon. The E-cores come in clusters of 4 cores each.