Yuuki_ans has shared some specifications regarding Intel’s upcoming E-Core only Xeon series. Sierra Forest will directly compete against AMD’s Bergamo and will feature higher core counts.
Sierra Forest 144-Core & 96-Core CPU Specs
The leak details two CPUs, one with 96 cores and the other with 144 cores. Sierra Forest will make use of the ‘Intel 3‘ process node and the Crestmont architecture. Crestmont is the successor to the current Gracemont featured on Alder Lake & Raptor Lake CPUs.
The A0 silicon revision shows that these processors are close to launch. Intel aims to launch Sierra Forest in H1 2024, and it seems like these CPUs are on track. The 144-core beast packs 108MB of L3 cache which leads to a 3MB L3 slice. The TDP for both processors is rated at 350W, which is a bit surprising considering the core count difference.
Do note that Sierra Forest is an entirely different series as compared to Emerald Rapids/ Granite Rapids. These CPUs are for density-optimized workloads, featuring a lot of small E-cores. Following Sierra Forest, Intel will launch Clearwater Forest CPUs based on the Intel 18A (1.8nm) node in 2025.
|Series||4th Gen Xeon||5th Gen Xeon||–||6th Gen Xeon||–||7th Gen Xeon||–|
|Codename||Sapphire Rapids||Emerald Rapids||Sierra Forest||Granite Rapids||Clearwater Forest||Diamond Rapids||Rogue River Forest|
|Socket||Socket E||Socket E||TBC||TBC||TBC||TBC|
|Platform||Eagle Stream||Eagle Stream||Birch Stream||Birch Stream||TBC||TBC|
|Core µArch||Golden Cove||Raptor Cove||Crestmont||Redwood Cove||Skymont?||Lion Cove+|
|Fabrication Node||Intel 7||Intel 7||Intel 3||Intel 3||Intel 18A||Intel 18A?|
|Max Cores||56||64||144 (SP) / 288 (AP)||132 (AP) / 88 (SP)||TBC||192|
|Max L3 Cache||112MB||120MB||TBC||TBC||TBC|
|Memory Support||8x DDR5-4800||8x DDR5-5600||12x DDR5-6400||TBC||8x DDR5|
|HBM Support||up to 64GB HBM2e||Yes||Yes||Yes|
|PCI Express||PCIe 5/4, 80 lanes||PCIe 5.0, 80 lanes||PCIe 5.0||PCIe 6.0|