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Intel Alder Lake K-series desktop CPUs specs have leaked

As the launch of Intel’s Alder Lake desktop processors approaches, more detailed leaks have started to surface. The latest of these details the K-series SKUs, including the clock speeds of each core cluster, the amount of L3 cache as well as the PL1 and PL2 values.

The leak was shared on Zhihu (via @davidneco25320) and is based on qualification samples that were reportedly sent to partners. The processors listed in the leak are the Core i9-12900K, Core i7-12700K, and Core i5-12600K. These three processors share the same PL1 and PL2 values, which are 125W and 228W, respectively.

The supposedly 12th Gen Core flagship processor, the Core i9-12900K, will come with 30MB of L3 cache. The P-core cluster (big/performance cores) clock speeds will peak at 5.3GHz (1-2C), reducing to 5.0GHz when using all 8x P-Cores, while the E-Core cluster (small/efficiency cores) will be able to reach 3.9GHz (1-4C), but only 3.7GHz on all 8x E-Cores.

As for the Core i7-12700K, which features 25MB of L3 cache, 5.0GHz clocks speeds will be achievable when using 1-2x P-Cores, reducing to a maximum of 4.7GHz on all 8x P-Cores. The E-Cores on the i7 processor will boost only 0.1GHz less than the i9, but only on 1-2x cores. When using all 4x cores, it should boost up to 3.6GHz.

Last but not least, there’s the i5-12600K with 20MB of L3 cache. The P-Core cluster can boost up to 4.9GHz on 1-2x cores and 4.5GHz on 6x cores. The E-Core cluster turbo boost is further reduced in this SKU, reaching up to 3.6GHz on 1-2x cores and 3.4GHz on all 4x cores.

Intel Alder Lake desktop processors are expected to hit the market by the end of this year, supporting DDR5 memory and PCIe 5.0.

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KitGuru says: 5.3GHz clock speed sounds great – but as always, take these rumours with a pinch of salt.

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