Processors like these could be good gaming CPUs, and yes once again in Asia on the ChipHell forums a leak occurred. This round the Core i5-10400 processor (6c/12t) listed for USD $184indicates it could be a sweet spot mid-range product.

Its predecessors are the Core i5-9400F and the i5-8400.  Core i5-10400 comes with 6-cores/12-threads and has 12 MB of shared L3 cache with a base clock of 2.90 GHz and a turbo to 4.30 GHz.

Tested on an MSI MAG Z490 Tomahawk the results have been compared with an i5-9400F with Cinebench R15 and R20, CPU-Z and SuperPi. The processor posts is merely 2-5% faster in a single-threaded test. With multi-threaded tests, the i5-10400 starts to shine thanks to HyperThreading and is yielding a ~40% performance increase in CPU-Z bench multi-threaded; with similar results in Cinebench R20. The results show that the processor is in close reach of the Ryzen 5 3600X in multi-threaded Cinebench tests.

Intel Core i5-10400 Gets Benchmarked and tested, much faster SMT over Core i5 9400