Redditor Seby9123 purchased Intel Core i9-12900KS before it was officially released. He was lucky enough to get his hands on a Core i9-12900KS sample before the official release by the company. The Core i9-12900KS is a flagship 16-core and 24-thread Alder Lake-S CPU with improved clock speeds and power. It is expected to show competition with AMD’s upcoming Ryzen 7 5800X3D processor.
A quick test in Cinebench R23 verifies that the CPU has a max turbo boost of 5.5 GHz for two Performance cores and a 5.2 GHz boost for all eight cores. The Efficient cores are expected to boost up to 4.0 GHz.
According to the CPU-Z data, the processor has increased PBP (PL1) to 150W. It means there has been a 25W upgrade over the original 12900K SKU. The CPU monitoring tool does not list AVX-512 instructions. The company has probably fused this part off from the silicon.
The Core i9-12900KS scores 2162 points in single-core and 29164 points in a multicore test as per the test provided by Seby.
Tom’s Hardware have also put forward some results showing other high-end parts such as the 12900K with DDR5 and DDR4 memory and also Ryzen 9 5950X, the flagship Zen3 processors from AMD.
The Core i9-12900KS is 29.6% faster than Ryzen 9 5950X in the single-core test and 9.7% faster in the multi-core. Tom’s Hardware utilized slower memory so this is not an apples-to-apples comparison as Tom’s Hardware uses slower memory.