A new 12th Gen Intel flagship CPU is on sale at Newegg with some impressive specs

Intel 12th Gen Core I9 Hero
Intel 12th Gen Core I9 Hero (Image credit: Daniel Rubino / Windows Central)

Updated March 25, 2022, at 10:50 a.m. ET: It appears the Newegg listing has been taken down.

What you need to know

  • Newegg has started selling the Intel Core i9-12900KS, the new Alder Lake desktop-class flagship processor.
  • Compared to the Core i9-12900K, this new CPU brings higher clock speeds and thermal limits (150W at base).
  • Intel's new flagship Core i9-12900KS is available now for $800.

Newegg has a new Intel flagship processor available right now that surpasses the Intel Core i9-12900K. This new king of Alder Lake is the Intel Core i9-12900KS, priced at $799.99. As spotted by our partners over at Tom's Hardware, this is just shy of $200 above the asking price of the now relegated Core i9-12900K.

But what's different with this new CPU? Intel has managed to bump the clock speeds for both Performance and Efficient cores, hitting a Turbo Boost Max 3.0 speed of 5.5GHz. It has the same 16 core hybrid configuration with eight Golden Cove performance cores and eight energy-efficient Gracemont cores clocked at 3.4GHz and 2.5GHz, respectively.

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CategoryIntel Core i9-12900KSIntel Core i9-12900KAMD Ryzen 9 5950X
Base FrequencyP: 3.4GHzE: 2.5GHzP: 3.2GHzE: 2.4GHz3.4GHz
BoostP: 5.2GHzE: 4.0GHzP: 5.1GHzE: 3.9GHz4.9GHz
Turbo Boost Max 3.05.5GHz5.2GHz
MemoryDDR4-3200/DDR5-4800Up to 128GBDDR4-3200/DDR5-4800Up to 128GBDDR4-3200Up to 128GB
L3 Cache30MB30MB32MB
Integrated GraphicsIntel UHD Graphics 770Intel UHD Graphics 770
PCIePCIe Gen 5.0 x 20PCIe Gen 5.0 x 20PCIe Gen 4.0 x 20
Manufacturing Node10nm10nm7nm

The UHD Graphics 770 from Intel is once again present, so too is the 12MB of L2 cache and 30MB of L3 cache. The Core i9-12900KS will be able to push a little harder out the box before any overclocking is considered. I've put the new Core i9-12900KS up against its older sibling and the AMD Ryzen 9 5950X in the above table.

In order to achieve this 5.5GHz boost clock speeds, Intel is making use of the company's new Enhanced Thermal Velocity Boost technology, which will likely require BIOS updates on supporting motherboards. This puts Intel in quite the comfortable position against AMD with a comparable offering to the AMD Ryzen 9 5950X, which itself struggled to completely outmatch the Core i9-12900K.

Rich Edmonds
Senior Editor, PC Build

Rich Edmonds was formerly a Senior Editor of PC hardware at Windows Central, covering everything related to PC components and NAS. He's been involved in technology for more than a decade and knows a thing or two about the magic inside a PC chassis. You can follow him on Twitter at @RichEdmonds.