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When 24 threads are faster than 32: Intel Core i9-12900K convincingly beats AMD Ryzen 9 5950X in Geekbench single and multi-core tests

Intel Alder Lake looks to take AMD Ryzen head-on in multi-core performance. (Image Source: PC Gamer)
Intel Alder Lake looks to take AMD Ryzen head-on in multi-core performance. (Image Source: PC Gamer)
The Intel Alder Lake Core i9-12900K has popped up on Geekbench with scores that seem to give it good leads over the AMD Ryzen 9 5950X. The Core i9-12900K is on an average up to 13% and 7% faster in single and multi-core over the Ryzen 9 5950X, which are decent leads. The benchmark seems to have been run on a system running Windows 11 Pro equipped with DDR5-4800 RAM.

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Intel is expected to officially launch the Alder Lake lineup sometime in Q4 2021. Alder Lake will be based on a 10 nm Enhanced SuperFin process, now known as Intel 7. With the launch imminent, we are starting to see performance leaks of Alder Lake processors on several benchmarking sites. The latest is the Geekbench 5 entry of the flagship Core i9-12900K processor.

Intel traditionally held the single-core performance crown while AMD excelled in multi-core. With the launch of Zen 3, AMD finally closed this single-core gap. Though Intel did manage to wrestle away the single-core leads from Zen 3 once again with Rocket Lake, multi-core was still AMD's forte given that the Core i9-11900K was capped at eight cores. Rocket Lake's single-core gains however came at the cost of higher power consumption. All that may change when Alder Lake launches later this year.

The Core i9-12900K offers eight Performance Cores and eight Efficient Cores, which gives it a 16C/24T configuration. According to the Geekbench entry, the Core i9-12900K scores 1,893 and 17,299 in single-core and multi-core, respectively. Known leaker @TUM_APISAK on Twitter spotted another such entry showing 1,834 and 17,370 points. For a quick preliminary comparison, we can thus consider the average scores as 1,863.5 and 17,334.5.

Taking the average Geekbench 5.3 scores for a Core i9-11900K at 1,815 and 10,742 and for a Ryzen 9 5950X at 1,652 and 16,248, we find at the Alder Lake Core i9-12900K is about 2.7% and 61.3% faster than the Rocket Lake Core i9-11900K and about 12.8% and 6.7% faster than the Zen 3 Ryzen 9 5950X in single-core and multi-core tests, respectively.

The Geekbench record seems to be reporting the clocks incorrectly, but we do hear that the Core i9-12900K can offer up to 5.3 GHz single-core turbo and a 5 GHz all-core boost on the Performance Cores while the Efficiency Cores are likely to offer 3.9 GHz single 3.7 GHz all-core boosts. 

The test bench is indicated as running Windows 11 Pro, which is not surprising since scheduling improvements in Microsoft's upcoming OS looks to benefit heterogeneous ISAs such as Alder Lake compared to what Windows 10 can. Alder Lake will also bring support for DDR5 memory and the test bench here seems to be using 32 GB of DDR5 memory conforming to DDR5-4800 JEDEC B timings as evidenced by the .gb5 raw information from the benchmark.

Buy the Intel Core i9-11900K on Amazon

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Intel Alder Lake Core i9-12900K on Geekebench. (Source: Geekbench)
Intel Alder Lake Core i9-12900K on Geekebench. (Source: Geekbench)

Source(s)

Geekbench (1) and (2) via @TUM_APISAK on Twitter and @leakbench on Twitter

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Vaidyanathan Subramaniam
Vaidyanathan Subramaniam - Managing Editor - 1500 articles published on Notebookcheck since 2012
Though a cell and molecular biologist by training, I have been drawn towards computers from a very young age ever since I got my first PC in 1998. My passion for technology grew quite exponentially with the times, and it has been an incredible experience from being a much solicited source for tech advice and troubleshooting among family and friends to joining Notebookcheck in 2017 as a professional tech journalist. Now, I am a Lead Editor at Notebookcheck covering news and reviews encompassing a wide gamut of the technology landscape for Indian and global audiences. When I am not hunting for the next big story or taking complex measurements for reviews, you can find me unwinding to a nice read, listening to some soulful music, or trying out a new game.
contact me via: @Geeky_Vaidy
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2021 08 > When 24 threads are faster than 32: Intel Core i9-12900K convincingly beats AMD Ryzen 9 5950X in Geekbench single and multi-core tests
Vaidyanathan Subramaniam, 2021-08-29 (Update: 2021-08-29)