Intel’s “15th Generation” flagship CPUs may be misidentified engineering samples with accurate core/thread counts displayed in Geekbench as 14900k.
Core i9-15900k benchmarked in Geekbench 6.4? Only 2,279 points for singles and 11,690 points for multicore tests
If you were waiting for a “real” successor to the Core i9 14900K, the Core i9 15900K is here. The Core i9 15900K may be an early engineering sample, so you don’t need to maintain your hopes for now.
This was probably the core I9 14900K, which was present in the pre-production version. Intel tests chips multiple times before booting, so some chips may be specified with different model numbers. However, it is also possible for benchmark databases to mislead these early samples.

You can see that the 15900K shares most specifications on the 14900K. This includes 24 cores and 32 threads, and 8 MB and 36 MB of L2 and L3 caches, respectively. The same goes for the socket. In other words, it’s the LGA 1700. So it is probably 14900K with the incorrect label, and the identifier also shows it as well. Both the Raptor Lake and the Raptor Lake Refresh chips have the authentic Intel Family 6 model 183 Stepping 1 identifier.
Nevertheless, it is interesting to see the benchmark of the 15900 K revealing a very overwhelming performance on Geekbench. The single and multicore scores (2279 and 11690 points, respectively) are significantly lower than the 14900K score, and we can see that the above frequencies are also much lower. The base clock is only 800 MHz and the boost is 4.8 GHz. The 14900K brings a P-core boost of 5.8 GHz, earning nearly 3,000 points on the singles and 20,000 points in the Geekbench 6 multi-core test.

The processor was tested on a B760 motherboard from a Chinese company called Jginyue. This is a Jginyue B760i Snow Dreammotherboard and boasts an ITX form factor and an LGA 1700 socket. That’s all you need to know about this benchmark. Therefore, Intel is not planning on launching the so-called “15,000” family, so we don’t expect to see another Intel processor series right now. In fact, this is the Core Ultra Series 2.
News Source: BenchLeaks