Intel’s upcoming Core i5-12400 "Alder Lake-S" processor could be an interesting piece of silicon. Apparently, not all 12th Gen Core i5 desktop chips have the same core-configuration. While the top Core i5-12600K is expected to have six "Golden Cove" P cores and four "Gracemont" E-cores, some of the lower variants, such as the i5-12400, will lack E cores, and be pure P core chips. In this case, the chip is 6-core/12-thread with just P cores; 1.25 MB of dedicated L2 cache per core, and 18 MB of shared L3 cache. You’ll probably get all the next-gen I/O, including PCI-Express Gen 5 (PEG slot), a PCI-Express Gen 4 CPU-attached NVMe slot, and DDR5+DDR4 memory.
Given that the Core i5-11400 is a $190 part, even with a 10-15% price hike, the i5-12400 is expected to be under $220. The only drawbacks here are expected to be locked BClk multiplier, and rather low clock speeds of 4.00 GHz. A user on Chinese social media posted alleged Cinebench R20 results of the i5-12400. It scores 659 points in the single-threaded test, and 4784 points in the multi-threaded test. Wccftech tabulated this against known performance numbers of popular chips, and found that the i5-12400 might end up slightly ahead of the Ryzen 5 5600X, a currently-$300 part. The table also puts out leaked i9-12900K numbers, which indicate why AMD is rushing with "Zen 3+" with 3D Vertical Cache, instead of next-gen "Zen 4."
