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THE ACTUAL PRODUCT
Intel Core i9-12900K original premium retail box with a gold plastic wafer holder; this packaging is discontinued
Official product image · Image source detailsProduct imagery does not establish a retailer’s bundle or condition.
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Intel Core i9-12900K

Boxed desktop processor · FCLGA1700 · BX8071512900K · original premium packaging

A boxed Alder Lake desktop processor with 16 cores, 24 threads and 30 MB of L3 cache. It includes Intel UHD Graphics 770. The image shows the original premium packaging, which Intel has since discontinued.

Reviewed 7 Sept 2026Manufacturer specifications, not a hands-on test.
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WHAT IT BRINGS

The useful part.

Supports DDR5-4800 or DDR4-3200 through a compatible motherboard, with 8 Performance-cores and 8 Efficient-cores.

Manufacturer source
BEFORE YOU CHOOSE

The checks that matter.

A separate compatible CPU cooler is required. Maximum Turbo Power is 241 W; verify board, BIOS and cooling support. The stated turbo frequency is not an all-core performance result.

Manufacturer source Manufacturer source

The premium box pictured has been replaced by standard packaging. Confirm the supplied box with the seller; the image is not a current availability claim.

Manufacturer source
NOTHING HIDDEN IN THE SMALL PRINT

Every specification.
With its source.

Our publishing standard
Socket
FCLGA1700
Conditions & context

Manufacturer specification · A matching socket alone does not establish motherboard support; check the exact board and BIOS.

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Core count and architecture
16 total (8 Performance-cores + 8 Efficient-cores)
Conditions & context

Manufacturer specification

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Thread count
24
Conditions & context

Manufacturer specification

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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
Conditions & context

Manufacturer specification · Manufacturer frequency limits. Maximum turbo is an eligible single-core maximum, not an all-core sustained clock or a measured benchmark; attainable clocks depend on workload, temperature, power settings and platform.

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Processor power definitions
125 W Processor Base Power; 241 W Maximum Turbo Power
Conditions & context

Manufacturer specification · Intel Processor Base Power and Maximum Turbo Power are separate manufacturer specifications. Neither is measured whole-system wall power or an AMD default-TDP value. Check motherboard power settings and cooling.

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Integrated graphics or none
Intel UHD Graphics 770
Conditions & context

Manufacturer specification · Display output requires a compatible motherboard and connection; processor graphics specifications are not measured game performance.

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Memory support
Up to DDR5-4800 or DDR4-3200; 128 GB maximum; 2 channels
Conditions & context

Manufacturer specification · Choose a compatible LGA1700 motherboard supporting one memory generation. The processor supports DDR5 or DDR4; this does not make a DDR4 slot accept DDR5. Rated support depends on memory population, module type and motherboard/BIOS support.

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CPU cores
16
Conditions & context

Manufacturer specification · Total physical cores; heterogeneous P/E cores must not be treated as identical performance units.

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Performance-cores
8
Conditions & context

Manufacturer specification

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Efficient-cores
8
Conditions & context

Manufacturer specification · Efficient-cores are separate from Performance-cores.

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L3 cache
30 MB
Conditions & context

Manufacturer specification · Intel Smart Cache (L3); capacity is not a latency or performance measurement.

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Total L2 cache
14 MB
Conditions & context

Manufacturer specification · Total L2 cache, distinct from shared L3.

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Processor Base Power
125 W
Conditions & context

Manufacturer specification · Intel Processor Base Power and Maximum Turbo Power are separate manufacturer specifications. Neither is measured whole-system wall power or an AMD default-TDP value. Check motherboard power settings and cooling.

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Maximum Turbo Power
241 W
Conditions & context

Manufacturer specification · Intel Processor Base Power and Maximum Turbo Power are separate manufacturer specifications. Neither is measured whole-system wall power or an AMD default-TDP value. Check motherboard power settings and cooling.

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Architecture
Alder Lake
Conditions & context

Manufacturer specification

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Process technology
Intel 7
Conditions & context

Manufacturer specification · Manufacturer process name; not a measured transistor dimension.

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CPU PCI Express
PCIe 5.0 and 4.0; up to 20 CPU lanes
Conditions & context

Manufacturer specification · Manufacturer configurations up to 1×16+4 or 2×8+4. Board wiring and chipset lanes are separate.

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Memory channels
2
Conditions & context

Manufacturer specification

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Maximum supported memory
128 GB
Conditions & context

Manufacturer specification · Choose a compatible LGA1700 motherboard supporting one memory generation. The processor supports DDR5 or DDR4; this does not make a DDR4 slot accept DDR5. Rated support depends on memory population, module type and motherboard/BIOS support.

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CPU package dimensions
45.0 × 37.5 mm
Conditions & context

Manufacturer specification · CPU package size; not retail-box or cooler dimensions.

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Maximum junction temperature
100 °C
Conditions & context

Manufacturer specification · Manufacturer junction-temperature limit; not an idle/load measurement or a recommended operating target.

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Boxed ordering code
BX8071512900K
Conditions & context

Manufacturer specification · Exact BOX ordering code; tray and China BXC configurations are distinct.

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Specification codes and steppings
SRL4H (C0)
Conditions & context

Manufacturer specification · Manufacturer-listed specification code and stepping options for this exact BOX order code; no unseen individual shipment stepping is promised.

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Included boxed cooler
No included cooler
Conditions & context

Manufacturer specification · Package contents for this exact boxed processor; tray/OEM bundles and separately sold cooling products may differ.

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Packaging depicted
Original premium box with gold plastic wafer holder
Conditions & context

Manufacturer specification · Intel has discontinued this premium box and transitioned to a standard box. The image documents the original i9-12900K packaging; check the seller’s exact supplied packaging. No availability is asserted.

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PUT IT IN PERSPECTIVE

A choice needs a contender.

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