Intel will be launching its 13th Gen Core processors later this year and engineering samples are starting to do the rounds. We've already seen some early Core i9 13900K performance results from ES1, which had limited performance. Recently, ES3 has appeared, bringing boost clock speeds up to 5.5GHz.
Chiphell user Lordzzz (via @9550pro) seemingly has the two engineering samples and even shared a picture of the Core i9-13900K ES1, where you can read the Q0D8 SPEC code. Moreover, the leaker also shared screenshots of CPU-Z with ES1's details and benchmark results, showing it running on an Asus Z690 Apex motherboard. The core configuration and 125W TDP suggests this is indeed a K-variant chip. In these images, you can see the chip boosting up to 4.5GHz, scoring 611 and 13,014.9 in the ST and MT benchmarks, respectively.
Intel i9-13900K ES1 and ES3 Information
ES1 really can't perform properly.
CPUZ：ST 880+ MT 15000+
Single-core 5.5 Multi-core 5.3（big）
— HXL (@9550pro) June 29, 2022
On the other hand, the ES3 chip could boost up to 5.5GHz in single-core and 5.3GHz on all P-cores, bumping ST and MT benchmark results to +880 and +15,000. However, the leaker didn't share proof of the CPU reaching these speeds or scoring these results. Even so, it's worth mentioning that ST performance is 6% above the Core i9-12900KS and MT performance is 28% higher. Moreover, the leaker also noted that the sample didn't start with DDR4 memory, but that's because Asus hasn't released a BIOS compatible with Raptor Lake yet.
Intel is expected to launch the new 13th Gen Core processors and 700-series motherboards in Q3/Q4 2022.
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KitGuru says: Most of the performance uplift from Alder Lake to Raptor Lake seems to originate from the extra cores. Still, the CPU-Z results suggest they'll also bring a decent gain in single thread performance.