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”|
|VideoCardz||Cores/Threads||E-Cores||P-cores||L2 + L3||iGPU||PBP / MTP||MSRP|
|TBC / 4.0 GHz||3.4 / 5.5 GHz||14 + 30MB||UHD770||150 / 260W||TBC|
|2.4 / 3.9 GHz||3.2 / 5.2 GHz||14 + 30MB||UHD770||125 / 241W||$589|
|2.4 / 3.9 GHz||3.2 / 5.2 GHz||14 + 30MB||–||125 / 241W||$564|
|1.8 / 3.8 GHz||2.4 / 5.1 GHz||14 + 30MB||UHD770||65 / 202W||$489|
|1.8 / 3.8 GHz||2.4 / 5.1 GHz||14 + 30MB||–||65 / 202W||$464|