Intel Alder Lake-S processor with 16 cores at 4 GHz and DDR5-4800 memory spotted

Published: 19th Jan 2021, 15:28 GMT   Comments

Intel Alder Lake-S with 16-cores and DDR5 memory

Intel’s 12th Gen Core Alder Lake-S processor has been discovered on the SiSoftware website by @momomo_us.

This isn’t the first time this 16-core Alder Lake CPU had appeared in the leaks. Back in October a similar SKU has been discovered on Sisoftware website. Another Alder Lake CPU had appeared in December on Geekbench.

The new sample that was discovered today has a higher clock speed though. With a base clock of 1.8 GHz and a boost of 4.0 GHz, we are looking at a faster CPU. There are a few interesting strings attached to the source link.

Genuine Intel(R) 0000 1.80GHz (16C 32T 1.8GHz/4GHz, 10x 1.25MB L2, 30MB L3)


The first string confirms the configuration of the CPU. It’s a 16-core CPU with 10x 1.25 MLB of L2 cache and a total of 30MB L3 cache. The L3 itself cache is 10MB higher than on Core i9-10900K. When it comes to the number of threads, the software erroneously reports on 32 threads. The Alder Lake-S CPU will be a hybrid design which means only the high-performance cores (aka big cores) will support hyper-threading. That is why the software also reports on 24T (threads) elsewhere.

Intel Intel(R) Wi-Fi 6E AX210 160MHz; 32GB CG78MEBUA081N DIMM (4.8GHz) PC76800


According to Sisoftware the memory configuration is PC76800. This specification does to exist, the software is likely reporting on PC5-38400, which is 4800 trillion transfers per second.

Intel(R) AlderLake-S Mobile Graphics Controller (256S 32C SM3.0 1.5GHz, 512kB L2, 12.8GB) (OpenCL)


This line confirms that the CPU carries 32 Execution Units (256 Shadings Units) clocked up to 1.5 GHz. The S-Series of processors is likely going to offer fewer cores than typical mobile CPUs (usually up to 96 EUs). What seems unclear right now is why the software thinks that this S-Series CPU will end up with a ‘Mobile Graphics Controller’.

Intel Alder Lake-S 16-core/24-thread CPU, Source: SiSoftware

Intel Alder Lake-S 16-core/24-thread CPU, Source: SiSoftware

While ‘processor multi-media’ performance has dropped from 438 Mpix to 263 Mpix compared to the 1.38 GHz ADP-S sample back from October, the memory bandwidth, for instance, has increased from 13.49 GB/s to 34.21 GB/s (254%).

Intel Alder Lake-S 16-core/24-thread CPU (results), Source: SiSoftware

We have already exclusively shared the picture of the new Alder Lake-S CPU:

Intel 12th Gen Core (Alder Lake-S CPU), Source:

Intel has confirmed that it’s Alder Lake-S processors will be released in 2021. The company has already demonstrated the CPU in action during CES 2021. The new LGA1700 platform will support DDR5 memory and PCI Gen5. The 12th Gen Core series will also be Intel’s first 10nm SuperFin desktop CPU series.

Intel Alder Lake (slide from CES 2021), Source: Intel

INTEL Mainstream CPU Series Specs
VideoCardz.comCoffee Lake-SComet Lake-SRocket Lake-SAlder Lake-SRaptor Lake-S
Launch Year20182020Q1 20212H 20212022-2023
Fabrication Node14nm14nm14nm10nm SuperFinTBC
Core µArchSkylakeSkylakeCypress CoveGolden Cove + GracemontGolden or Ocean Cove + Gracemont
Graphics µArchGen9.5Gen9.5Gen12.1Gen12.2Gen 12.7
Max Core Countup to 8 coresup to 10 coresup to 8 coresup to 16 (8+8)TBC
Memory SupportDDR4DDR4DDR4DDR5DDR5
PCIe GenPCIe 3.0PCIe 3.0PCIe 4.0PCIe 5.0PCIe 5.0
Intel Core Series8th/9th Gen Core-S10th Gen Core-S11th Gen Core-S12th Gen Core-S (?)13th Gen Core-S (?)
Motherboard ChipsetsIntel 300 (eg. Z390)Intel 400 (eg. Z490)Intel 500 (Z590)Intel 600 (eg. Z690) (?)Intel 700 (eg. Z790) (?)

Source: SiSoftware via @momomo_us

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