DDR5, PCIe 5 and unequal cores. Intel Alder Lake Processors Details

DDR5, PCIe 5 and unequal cores. Intel Alder Lake Processors Details

Well-known resource Notebookcheck has published details about Intel Alder Lake processors, received, as noted, exclusively from “OEM-sources”. These data characterize in some detail the prospective Alder Lake CPUs, which seem to be released next year: given that the process they have the same as, for example, the coming out in early 2021 (or at the end of the current) Tiger Lake-H – with a 10-nanometer CPU and 14-nanometer PCH, with production should not be too difficult, but only Intel knows the exact date of release of new processors.

Alder Lake will use the processor layout known from the Lakefield CPU: with large and small cores – the big.LITTLE principle in single-chip Arm systems. For example, Alder Lake’s small cores will be based on the Gracemont microarchitecture (which will replace Tremont in Lakefield), while the large cores will be based on Golden Cove, which replaces Willow Cove in Tiger Lake. So far, the source is talking about two Alder Lake CPU series: Alder Lake-S with TDP up to 125 W and number of processing cores up to 16 (8 Gracemont and 8 Golden Cove) and Alder Lake-P with TDP up to 65 W and number of processing cores up to 14 (8 Gracemont and 6 Golden Cove). It’s interesting that multi-threading will be available only for Golden Cove cores, i.e. we can speak about 24 and 20 threads respectively. Alder Lake-S, of course, will be focused on using in desktop PCs (with motherboards with socket LGA 1700), but Alder Lake-P, according to the source, may appear in laptops.

Given the positioning, it is quite logical that in the more efficient Alder Lake-S will be installed GPU weaker – Intel Xe with 32 executive blocks. Alder Lake-P will have a GPU with 96 executive blocks. Accordingly, the former will support up to 128 GB of RAM (DDR4-3200 MHz or DDR5-4400 MHz), the latter – up to 64 GB of memory of the same standards. Well, the general feature of the CPU line – support for the proprietary Intel Gaussian and Neural Accelerator 3.0 (GNA 3.0) engine, Wi-Fi 6E 802.11axR2 and various security technologies: Total Memory Encryption (TME), Return-oriented programming (ROP) attack prevention, Hypervisor-manager Linear Address Translation (HLAT) and Multi-key TME (MK-TME).

Alder Lake-P is assigned support for up to four Thunderbolt 4 ports and one Maple Ridge controller, while Alder Lake-S will support two Maple Ridge controllers. As for PCIe 5 support, it is only implemented through the CPU: Alder Lake-P supports 8 bus lines and Alder Lake-S supports 16 bus lines. But the total support for the interface PCIe means and CPU, and PCH – wider: in Alder Lake-P – another eight lines of PCIe 4 and 12 lines PCIe 3, and in Alder Lake-S – 20 lines PCIe 4 and 12 lines PCIe 3. As a result, Alder Lake-P support up to 28 lines PCIe all versions, and Alder Lake-S – up to 48 lines.


No more posts
No more posts