Intel Core i9-12900
Also called intel core i9-12900, core i9-12900, i9-12900, core-i9-12900
Intel Core i9 desktop processor on Alder Lake, with 16 cores and 24 threads and 14336 KB L2, 30 MB L3 at 65 W TDP addressing up to 128 GB and Intel UHD Graphics 770.
What you need to know
Still a capable Core i9 desktop chip.
Intel Core i9-12900 launched in January 1, 2022., It has 16 cores and 24 threads on Alder Lake, dropping into the FCLGA1700 socket. It is no longer the newest SKU in every store, but the chip is still useful when the rest of the PC keeps up.
- Still good?
- Yes, for most work this class is sold for
- Product age
- 4 years old
- Upgrade pressure
- Low to moderate
What this hardware means today
Age and usefulness are not the same number. This page keeps them separate.
- Performance today
- Very Good. Very Good for the class when RAM, storage, and the GPU keep up.
- Product age 4 years old
- Aging. Launched January 1, 2022. Newer platforms exist. That does not make this chip unusable by itself.
- Support status
- Supported. Current Windows and current applications still run on this class of CPU. Platform BIOS support depends on the motherboard or laptop vendor.
- Upgrade pressure
- Low to moderate. Upgrade pressure comes from platform features and specific CPU-bound work, not from the chip being unusable.
Where does it sit?
Alder Lake sits on Intel's recent Core timeline. Later desktop branding moved toward Core Ultra.
Performance context
These are qualitative readings, not a fake 8.7 out of 10. Workload still wins.
Gaming: Very Good
Plenty for current games when the GPU is the limit, which it often is.
Productivity: Very Good
16 cores cover office, browser, and compile work in this class.
Multithreaded workloads: Very Good
24 threads. Heavy encodes still scale further on higher-core parts.
General use: Excellent
Everyday Windows use is not where most people notice this SKU first.
Efficiency: Good
Rated 65 W base power. That is a platform number, not a promise about your cooler.
Should you upgrade?
Probably not based on CPU performance alone.
Upgrade makes more sense if
- Your workload is strongly CPU limited
- You need a newer platform for memory, I/O, or chipset features
- You need substantially more multicore performance
- You need newer connectivity that your current board cannot offer
Upgrade makes less sense if
- The GPU is the real bottleneck
- Current applications are already responsive
- The CPU rarely limits your workload
Specifications
Figures below follow the Feex Hardware Database record for this SKU. Fields without a recorded value are omitted.
Processor
Intel Core i9-12900 is built on Alder Lake.
| Manufacturer | Intel |
|---|---|
| Family | Core i9 |
| Architecture | Alder Lake |
| Generation | 12th Generation Intel Core i9 Processors |
| Segment | Desktop |
Cores and threads
Intel Core i9-12900 has 16 cores and 24 threads.
| Cores | 16 (8 P-cores + 8 E-cores) |
|---|---|
| P-cores | 8 |
| E-cores | 8 |
| Threads | 24 |
| Hybrid architecture | Yes |
Clock speeds
Base clock is 2.4 GHz. Boost reaches 5.1 GHz.
| Base frequency | 2.4 GHz |
|---|---|
| Max boost | 5.1 GHz |
Cache
Cache on this sheet is 30 MB L3.
| L2 cache | 14336 KB |
|---|---|
| L3 cache | 30 MB |
| Total cache | 44 MB |
Memory
Intel Core i9-12900 addresses 128 GB across 2 memory channels.
| Supported types | DDR5, DDR4 |
|---|---|
| Max capacity | 128 GB |
| Channels | 2 |
Package and power
Intel Core i9-12900 uses the FCLGA1700 socket and a 65 W TDP.
| Socket | FCLGA1700 |
|---|---|
| TDP | 65 W |
| PCIe | Revision 5.0, 20 lanes |
Integrated graphics
Intel Core i9-12900 includes Intel UHD Graphics 770.
| Integrated graphics | Intel UHD Graphics 770 |
|---|
Market
Intel Core i9-12900 launched January 1, 2022 at USD 538 (suggested price at launch).
| Launch date | January 1, 2022 |
|---|---|
| Launch MSRP | USD 538 (suggested price at launch) |
| Model | i9-12900 |
Features
Intel Core i9-12900 records 40 instruction sets on this sheet.
| Instruction sets | AES-NIAVX2AVXAVX-VNNICET-IBTCET-SSFMASHAVAES64-bit (x86-64)BMI1BMI2CLMULF16CGFNIPCLMULQDQRDRANDRDSEEDSSE4.1SSE4.2x86-64-v3ABMADXCMPXCHG16BEnhanced SpeedStepFast Short Rep MOVSFXSRInvariant TSCLZCNTPOPCNTRDTSCPSSESSE2SSE3SSSE3x86-64-v2XSAVEXSAVEOPTMMXMOVBE |
|---|---|
| Security | AES-NIControl-flow Enforcement (CET)Execute Disable (NX)Boot GuardHardware RNGOS GuardOS Guard (SMAP)Mode-Based Execute Control |
| Virtualization | Extended Page Tables (EPT)VT-d (DMA Remapping)VT-x (Hardware Virtualization) |
| AI acceleration | Deep Learning BoostGaussian Neural Accelerator |
| OS capabilities | Docker / Hyper-V readyLinux KVM readyWindows 11 eligibleAndroid emulator readyWSL2 ready |
Compatibility
| Socket | FCLGA1700 |
|---|---|
| Board | A shared socket is not automatic compatibility. Check the motherboard CPU list and BIOS revision. |
| Memory | DDR5, DDR4, up to 128 GB |
| Graphics | Intel UHD Graphics 770 |
A shared socket is not automatic compatibility. Boards often need a BIOS update before a newer chip in the same socket will post.
Cooler clearance, VRM quality, and power limits matter as much as the socket name.
Read the memory list on the board. The CPU can list more standards than one motherboard will accept.
No post after a CPU swap
Clear CMOS only after you confirm the board list includes this SKU and the BIOS is new enough. A supported name on a box is not the same as a flashed board.
Sources and verification
Reviewed by Feex editorial. Last verified August 2026 Status: Partially Verified. How we research.
- Feex Hardware Database · Specification source used for this sheet. CC BY 4.0.
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