Unreleased Intel Core i9-12900KS outperforms Ryzen 9 5950X in leaked single and multi-core Cinebench tests

Published: 17th Mar 2022, 19:28 GMT   Comments

Intel’s flagship Alder Lake-S CPU tested ahead of launch

Redditor Seby9123 purchased Intel Core i9-12900KS before it was officially released. 

Following a report from two days ago, we have another Intel enthusiast who was lucky enough to obtain a Core i9-12900KS sample before Intel even made it official. The Core i9-12900KS is a flagship 16-core and 24-thread Alder Lake-S CPU with increased clock speeds and power. This part is set to compete with AMD’s upcoming Ryzen 7 5800X3D processor.

Intel Core i9-12900KS, Source: Seby9123

A quick test in Cinebench R23 confirms that the CPU has a max turbo boost of 5.5 GHz for two Performance cores and 5.2 GHz boost for all eight cores. It appears that Efficient cores boost up to 4.0 GHz.

The CPU-Z data confirms that the processor has increased PBP (PL1) to 150W, which represents a 25W increase over the original 12900K SKU. Furthermore, the CPU monitoring tool does not list AVX-512 instructions, confirming that Intel has indeed fused this part off from the silicon.

According to the test provided by Seby, Core i9-12900KS scores 2162 points in single-core and 29164 points in multicore test:

Intel Core i9-12900KS in Cinebench R23, Source: Seby9123

Tom’s Hardware have quickly put together some results featuring other high-end parts such as the 12900K with DDR5 and DDR4 memory and also Ryzen 9 5950X, the flagship Zen3 processors from AMD:

Intel Core i9-12900KS in Cinebench R23, Source: Tom’s Hardware

At stock, the Core i9-12900KS is 29.6% faster than Ryzen 9 5950X in single-core test and 9.7% faster in multi-core. Do note, however, that this is not apples-to-apples comparison as Tom’s Hardware uses slower memory (Seby: DDR5-6200 at 32-38-38-76, Tom’s: DDR5-4400 36-36-36-72).

Intel 12th Gen Core Series “Alder Lake-S”
VideoCardzCores/ThreadsE-CoresP-coresL2 + L3iGPUPBP / MTPMSRP
TBC / 4.0 GHz3.4 / 5.5 GHz14 + 30MBUHD770150 / 260WTBC
2.4 / 3.9 GHz3.2 / 5.2 GHz14 + 30MBUHD770125 / 241W$589
2.4 / 3.9 GHz3.2 / 5.2 GHz14 + 30MB125 / 241W$564
1.8 / 3.8 GHz2.4 / 5.1 GHz14 + 30MBUHD77065 / 202W$489
1.8 / 3.8 GHz2.4 / 5.1 GHz14 + 30MB65 / 202W$464

Source: u/Seby9123, Tom’s Hardware

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