Revision as of 11:03, 3 November 2021

Core i9-12900K is a 64-bit hexadeca-core high-end performance x86 desktop microprocessor introduced by Intel in late 2021. This processor, which is based on the Alder Lake microarchitecture, is manufactured on Intel's Intel 7 process. The i9-12900K is a heterogeneous multicore SoC integrating eight big Golden Cove cores along with eight small Gracemont cores. The big cores operate at 3.2 GHz with a Turbo Boost frequency of up to 5.1 GHz and a Turbo Boost Max frequency of up to 5.2 GHz. The small cores operate at 2.4 GHz with a Turbo Boost frequency of up to 3.9 GHz. This processor has a base power of 125 W and a maximum turbo power of 241 W. This chip supports up to 128 GiB of dual-channel DDR5-4800 memory and incorporates Intel's UHD Graphics 770 IGP operating at 300 MHz with a burst frequency of 1.55 GHz.

The i9-12900KF is an identical version of this chip without integrated graphics.

Cache

Main article: Alder Lake § Cache

This processor features 30 MiB of L3 cache shared among all the big cores and all the small core clusters.

Small Core

Main article: Gracemont § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 768 KiB 786,432 B 0.75 MiB L1I$ 512 KiB 524,288 B 0.5 MiB 8x64 KiB     L1D$ 256 KiB 262,144 B 0.25 MiB 8x32 KiB     L2$ 4 MiB 4,096 KiB 4,194,304 B 0.00391 GiB     2x2 MiB     L3$ 6 MiB 6,144 KiB 6,291,456 B 0.00586 GiB     2x3 MiB

Big Core

Main article: Golden Cove § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 640 KiB 655,360 B 0.625 MiB L1I$ 256 KiB 262,144 B 0.25 MiB 8x32 KiB     L1D$ 384 KiB 393,216 B 0.375 MiB 8x48 KiB     L2$ 10 MiB 10,240 KiB 10,485,760 B 0.00977 GiB     8x1.25 MiB     L3$ 24 MiB 24,576 KiB 25,165,824 B 0.0234 GiB     8x3 MiB

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR5-4800, DDR4-3200 Supports ECC No Max Mem 128 GiB Controllers 1 Channels 2 Max Bandwidth 71.53 GiB/s 73,246.72 MiB/s 76.805 GB/s 76,804.753 MB/s 0.0699 TiB/s 0.0768 TB/s Bandwidth Single 35.76 GiB/s Double 71.53 GiB/s