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Intel Core i9-12900K
Intel's first hybrid desktop chip: 8 Golden Cove performance cores paired with 8 Gracemont efficiency cores, launched alongside DDR5 memory and PCIe 5.0 on the new LGA1700 socket. Reviews at the time placed it ahead of AMD's Ryzen 9 5950X in most games, but two further Intel generations have since used the same socket, so a used chip today buys into a retired platform.
Pros
- 8 Golden Cove P-cores plus 8 Gracemont E-cores (16C/24T) led gaming and multi-thread benchmarks among desktop CPUs at launch
- 5.2 GHz max turbo via Intel Thermal Velocity Boost, with 30 MB of L3 cache, the largest of any 12th Gen Core chip
- Unlocked multiplier with independent P-core and E-core ratio control, plus early PCIe 5.0 and DDR5 support on LGA1700
- Integrated UHD Graphics 770 lets the system boot and run a desktop without a discrete GPU
- LGA1700 stayed in production through three Core generations (12th-14th Gen), so boards and parts are easy to find used
Cons
- 241 W maximum turbo power needs a large tower cooler or a 280 mm+ AIO; Intel does not include one in the box
- E-cores have no Hyper-Threading or AVX-512, and hybrid thread scheduling needed Windows 11 to work reliably at launch
- Superseded twice on the same LGA1700 socket by the i9-13900K and i9-14900K, so a used board has no further CPU upgrade path
- DDR4 and DDR5 boards are not interchangeable, since any given motherboard supports only one memory type
Good
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the Intel Core i9-12900K
General
- Announced
- 2021
- Socket
- LGA1700
- Process
- 10 nm
- Base TDP
- 125 W
- Max turbo power
- 241 W
- Unlocked multiplier
- Yes
- Cooler included
- No
Cores & Clocks
- Cores
- 16
- Performance cores
- 8
- Efficiency cores
- 8
- Threads
- 24
- Base clock
- 3.2 GHz
- Boost clock
- 5.2 GHz
- L2 cache
- 14 MB
- L3 cache
- 30 MB
Integrated GPU
- iGPU
- Intel UHD Graphics 770
- iGPU clock
- 1,550 MHz
Memory
- Memory support
- DDR5-4800 / DDR4-3200
- Max memory
- 128 GB
- Memory channels
- 2
Platform
- PCIe version
- 5
- CPU PCIe lanes
- 20
Benchmarks
- Geekbench 6 (single)
- 2,715Top 32%
- Geekbench 6 (multi)
- 17,450Top 24%
- Cinebench R23 (single)
- 1,903Top 30%
- Cinebench R23 (multi)
- 26,229Top 19%
- PassMark
- 41,103Top 24%
Quick answers
Is the Intel Core i9-12900K good in 2026?
The Intel Core i9-12900K earns an Inno Score of 69.3/100 (“Good”) based on its specs and benchmark results. Intel's first hybrid desktop chip: 8 Golden Cove performance cores paired with 8 Gracemont efficiency cores, launched alongside DDR5 memory and PCIe 5.0 on the new LGA1700 socket. Reviews at the time placed it ahead of AMD's Ryzen 9 5950X in most games, but two further Intel generations have since used the same socket, so a used chip today buys into a retired platform.
What are the key specs of the Intel Core i9-12900K?
Cores: 16 · Threads: 24 · Boost clock: 5.2 GHz · Socket: LGA1700
What are the closest alternatives to the Intel Core i9-12900K?
Its closest rivals on InnoReviews are AMD Ryzen 7 7800X3D, AMD Ryzen 9 5950X, Intel Core i5-14600K — open the comparison pages for a spec-by-spec breakdown.
