Intel Core i9-14900KSBoxed desktop processor · FCLGA1700 · BX8071514900KS- CPU cores
- 24This one: 16
- Thread count
- 32This one: 24
PROCESSORS
Intel Core i9-12900K
Boxed · FCLGA1700 · original premium packaging · Intel part BX8071512900K
- CPU cores
- 16
- Thread count
- 24
- Maximum single-core turbo
- 5.2 GHz
A 16-core, 24-thread Alder Lake processor for LGA1700 with 8 Performance-cores, 8 Efficient-cores, up to 5.2 GHz turbo, 30 MB of L3 cache and UHD Graphics 770. It is unlocked for overclocking and works with DDR4 or DDR5, depending on the motherboard. No cooler is included.
Prices & buying options
As an Amazon Associate I earn from qualifying purchases.
Price alert
Email me when the Intel Core i9-12900K gets cheaper on eBay. We check exact-model listings once a day at 12:00 UTC.
THE ACTUAL PRODUCT
Compare with Intel Core i9-14900KS
Specifications checked 12 Sept 2026Manufacturer specifications, not a hands-on test.
The nearest checked processors by key specifications, with what differs from the Intel Core i9-12900K. The first matches the Compare button above.
Intel Core i9-14900KSBoxed desktop processor · FCLGA1700 · BX8071514900KS
AMD Ryzen 9 9900X3DAM5 boxed processor 100-100001368WOF · cooler not included- CPU cores
- 12This one: 16
- Maximum single-core turbo
- 5.5 GHzThis one: 5.2 GHz
AMD Ryzen 9 5950XAM4 boxed processor 100-100000059WOF · cooler not included- Thread count
- 32This one: 24
- Maximum single-core turbo
- 4.9 GHzThis one: 5.2 GHz
Key strengths
8 Performance-cores and 8 Efficient-cores (24 threads) with up to 5.2 GHz turbo and 30 MB of L3 cache, plus UHD Graphics 770 with Quick Sync Video.
Unlocked for overclocking with Intel XTU 7.14, works with DDR4-3200 or DDR5-4800 memory, supports ECC on compatible platforms and has lower power limits (125 W base, 241 W maximum turbo) than the 14900KS.
Before you buy
Fewer Efficient-cores (8) and a lower 128 GB memory ceiling than the 14900KS (16 and 192 GB). No cooler is included, and Intel Application Optimization (APO) is limited to Advanced Mode on enabled platforms.
Memory is rated only up to DDR5-4800 or DDR4-3200, so faster kits run beyond Intel's specification.
Works with
Products in this catalogue that list the same socket or memory type as the Intel Core i9-12900K. A shared socket or memory type is necessary but not sufficient: check the exact CPU and memory support lists, and the BIOS version, before buying.
- 249 LGA1700 motherboardsSocket LGA1700 on both, from cited specifications
- 50 DDR5 memory kitsMemory type DDR5 on both, from cited specifications
- 8 DDR4 memory kitsMemory type DDR4 on both, from cited specifications
Every specification. With its source.
Full specifications
Exact configuration: Boxed desktop processor · FCLGA1700 · BX8071512900K · original premium packaging
68 specifications in 9 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”. 1 row repeats a listed fact in the manufacturer’s own wording, kept under “Manufacturer wording”.
Cores & clocks
21 items
- CPU cores
- 16
Total of Performance-cores and Efficient-cores, which run at different speeds.
Source - Thread count
- 24Source
- Maximum single-core turbo
- 5.2 GHz
Peak frequency, not a sustained all-core speed; workload, cooling, power settings and the motherboard affect it.
Source - Architecture
- Alder LakeSource
- Core count and architecture
- 16 total (8 Performance-cores + 8 Efficient-cores)Source
- Base / boost clocks and conditions
- P-cores: 3.20 GHz base, up to 5.10 GHz turbo; E-cores: 2.40 GHz base, up to 3.90 GHz turbo; maximum single-core turbo up to 5.20 GHz
Maximum turbo applies to eligible cores, not all cores at once; clocks depend on workload, temperature, power settings and the motherboard.
Source - Performance-cores
- 8Source
- Efficient-cores
- 8
Efficient-cores are separate from Performance-cores.
Source - Maximum Turbo Power
- 241 W
Intel's base and maximum turbo power ratings, not measured system power. Check the motherboard's power settings and cooling.
Source - Performance-core base clock
- 3.2 GHz
Performance-core base frequency.
Source - Performance-core regular turbo
- 5.1 GHz
Peak Performance-core turbo, not a sustained all-core speed; separate from Turbo Boost Max 3.0 and Thermal Velocity Boost.
Source - Efficient-core base clock
- 2.4 GHz
Efficient-core base frequency.
Source - Efficient-core maximum turbo
- 3.9 GHz
Peak frequency, not a sustained all-core speed; workload, cooling, power settings and the motherboard affect it.
Source - Turbo Boost Max 3.0 frequency
- 5.2 GHz
Peak frequency, not a sustained all-core speed; workload, cooling, power settings and the motherboard affect it.
Source - Thermal Velocity Boost frequency
- Not listed by the manufacturer
Intel's 12900K specification page doesn't list a Thermal Velocity Boost frequency.
Source - Intel Adaptive Boost
- Not listed by the manufacturer
Intel's 12900K specification page doesn't list Adaptive Boost Technology.
Source - Tuning support
- Unlocked processor; Intel XTU 7.14 supported
Intel's XTU page names this processor; use the 7.14 branch (7.14.2.93), as version 10.0 is for Core Ultra Series 2 and newer. Needs an overclocking-capable chipset, supported Windows and BIOS; results aren't guaranteed.
- CPU unlocked for overclocking
- Yes
Intel lists the processor as unlocked; the motherboard and firmware must support it, and overclocking can affect stability and warranty.
- Intel Thread Director
- Yes
Helps the operating system schedule work across Performance-cores and Efficient-cores.
Source - Clock and thermal management
- Speed Shift; Turbo Boost 2.0; Turbo Boost Max 3.0; Enhanced SpeedStep; idle states; thermal monitoring
Intel power-management technologies.
Source - Intel Hyper-Threading
- Yes
Only the Performance-cores run two threads each; 24 threads in total.
Source
Cache
2 items
Power & temperature
2 items
- Processor Base Power
- 125 W
Intel's base and maximum turbo power ratings, not measured system power. Check the motherboard's power settings and cooling.
Source - Maximum junction temperature
- 100 °C
Intel's maximum junction temperature, not a typical running temperature.
Source
Manufacturer wording (1)
The same facts in the manufacturer’s combined or original wording, each with its source.
- Processor power definitions
- 125 W Processor Base Power; 241 W Maximum Turbo Power
Intel's base and maximum turbo power ratings, not measured system power. Check the motherboard's power settings and cooling.
Source
Memory support
8 items
- Memory support
- Up to DDR5-4800 or DDR4-3200; 128 GB maximum; 2 channels
Choose a motherboard for either DDR5 or DDR4; the processor supports both, but a board takes only one type. Rated speeds depend on the memory configuration and motherboard.
Source - Memory channels
- 2Source
- Maximum supported memory
- 128 GB
Choose a motherboard for either DDR5 or DDR4; the processor supports both, but a board takes only one type. Rated speeds depend on the memory configuration and motherboard.
Source - Rated DDR5 transfer ceiling
- 4800 MT/s
Choose a motherboard for either DDR5 or DDR4; the processor supports both, but a board takes only one type. Rated speeds depend on the memory configuration and motherboard.
Source - Rated DDR4 transfer ceiling
- 3200 MT/s
Choose a motherboard for either DDR5 or DDR4; the processor supports both, but a board takes only one type. Rated speeds depend on the memory configuration and motherboard.
Source - Published maximum memory bandwidth
- 76.8 GB/s
Intel's maximum memory bandwidth; actual bandwidth depends on the memory configuration.
Source - CPU ECC memory capability
- Yes
Needs a motherboard chipset, BIOS and memory that enable ECC.
Source - Intel Optane Memory support
- Yes
Needs a compatible chipset, drive, software and operating system.
Source
Graphics, display & AI
15 items
- Integrated graphics available
- Yes
Intel UHD Graphics 770 built in; display outputs depend on the motherboard.
Source - Integrated graphics or none
- Intel UHD Graphics 770
Display output needs a motherboard with video ports.
Source - Integrated graphics base frequency
- 300 MHz
Graphics base frequency.
Source - Integrated graphics dynamic ceiling
- 1.55 GHz
Maximum graphics clock.
Source - Graphics execution units
- 32
Intel execution units; not directly comparable with other GPU designs.
Source - Processor graphics interfaces
- eDP 1.4b; DisplayPort 1.4a; HDMI 2.1
Interfaces the processor supports; the motherboard decides which ports are fitted.
Source - Published display mode limits
- HDMI: 4096 × 2160 at 60 Hz; DP: 7680 × 4320 at 60 Hz; eDP: 5120 × 3200 at 120 Hz
Separate limits for each interface; they don't all apply at once, and the board, cable and display must support them.
Source - Maximum supported displays
- 4
Up to four displays, depending on the motherboard, drivers and operating system; not all at each interface's maximum mode.
Source - Graphics API support
- DirectX 12; OpenGL 4.5; OpenCL 3.0
API versions supported by the built-in graphics; drivers and the operating system also matter.
Source - Multi-format codec engines
- 2
Number of media engines.
Source - Intel Quick Sync Video
- Yes
Hardware video encoding and decoding; check that your software supports it.
Source - Intel Clear Video HD
- Yes
Needs support from the motherboard, chipset, BIOS, drivers, operating system and software.
Source - Integrated GPU device ID
- 0x4680
Graphics device ID.
Source - Gaussian and Neural Accelerator
- Intel GNA 3.0
Intel's Gaussian & Neural Accelerator; not comparable with NPU TOPS ratings.
Source - CPU Deep Learning Boost
- Yes
CPU instructions for AI workloads.
Source
PCIe, USB & storage
3 items
- CPU PCI Express
- PCIe 5.0 and 4.0; up to 20 CPU lanes
Intel lists 1×16+4 or 2×8+4 lane configurations; board wiring and chipset lanes are separate.
Source - Maximum CPU PCIe lanes
- 20
Lanes provided by the processor; chipset lanes and board slots are separate.
Source - CPU-to-chipset interface
- DMI 4.0; up to 8 lanes
DMI links the processor to the chipset; these lanes aren't extra slots.
Source
Platform & package
8 items
- Socket
- FCLGA1700
The socket alone doesn't guarantee support; check the motherboard's CPU-support list and BIOS.
Source - CPU package dimensions
- 45.0 × 37.5 mm
Size of the processor package, not the retail box.
Source - Boxed ordering code
- BX8071512900K
Intel's order code for the boxed version; tray and China-market BXC versions have different codes.
Source - Specification codes and steppings
- SRL4H (C0)
Intel lists this specification code and stepping for the boxed order code.
Source - Included boxed cooler
- No included cooler
Intel doesn't include a cooler with this boxed processor; tray and OEM bundles may differ.
Source - Boxed packaging
- Standard box; premium gold-wafer box discontinued
Intel moved the i9-12900K to a standard box design. The earlier premium box, with the processor in a golden plastic wafer holder, is discontinued but may still be on sale; check which box the seller supplies.
Source - Manufacturer launch quarter
- Q4 2021
Intel's launch quarter, not a sign of current stock.
Source - BIOS and stability guidance
- Not affected by the 13th/14th-generation Vmin Shift issue
Intel's statement of 30 August 2024 covers the 13th/14th-generation Vmin Shift issue only.
Source
Features & security
8 items
- Maximum CPU configuration
- 1
Single-processor platforms.
Source - Instruction set and extensions
- Intel 64; 64-bit; SSE4.1; SSE4.2; AVX2
Instruction sets Intel lists; AVX-512 is not listed.
Source - Intel Volume Management Device
- Yes
Needs support from the motherboard, chipset, BIOS, drivers, operating system and software.
Source - Intel vPro eligibility
- Enterprise
Needs support from the motherboard, chipset, BIOS, drivers and operating system; vPro eligibility isn't certification of a built PC.
Source - Listed management capabilities
- AMT; Standard Manageability; One-Click Recovery; Hardware Shield eligibility; Stable IT Platform Program
Needs support from the motherboard, chipset, BIOS, drivers and operating system.
Source - Listed security capabilities
- Threat Detection; Secure Key; Control-Flow Enforcement; Total Memory Encryption - Multi Key; AES New Instructions; OS Guard; Trusted Execution; Execute Disable Bit; Boot Guard; Mode-based Execute Control; Total Memory Encryption
Needs support from the motherboard, chipset, BIOS, drivers and operating system; no system is secure against every threat.
Source - Virtualization capabilities
- VT-rp; VT-x; VT-d; Extended Page Tables
Needs support from the motherboard, chipset, BIOS, drivers, operating system and software.
Source - Intel Application Optimization
- Limited (Advanced Mode only)
Needs Windows 11, a compatible BIOS and Intel DTT/IPF (DTT 11405 or newer). The 12900K falls under Intel's 12th-generation Advanced Mode policy; limited support can cause slowdowns, and only selected applications benefit.
Manufacturing
1 item
- Process technology
- Intel 7
Intel's process name.
Source
Compare with another processor
More of the nearest checked processors by key specifications, for a side-by-side comparison.
AMD Ryzen 9 7900XAM5 boxed processor 100-100000589WOF · cooler not includedCompare the two 
AMD Ryzen 9 9900XAM5 boxed processor 100-100000662WOF · cooler not includedCompare the two 
AMD Ryzen 9 7900X3DAM5 boxed processor 100-100000909WOF · cooler not includedCompare the two 
AMD Ryzen 9 5900XAM4 boxed processor 100-100000061WOF · cooler not includedCompare the two 
AMD Ryzen 9 5900XTAM4 boxed processor 100-100001581WOF · cooler not includedCompare the two 
AMD Ryzen 9 9950XAM5 boxed processor 100-100001277WOF · cooler not includedCompare the two 
AMD Ryzen 9 9950X3DAM5 boxed processor 100-100000719WOF · cooler not includedCompare the two 
AMD Ryzen 9 7950XAM5 boxed processor 100-100000514WOF · cooler not includedCompare the two