List of Intel Core i9 microprocessors

Desktop processors

Skylake-X (14 nm)

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, FMA3, MPX, Enhanced Intel SpeedStep Technology, Intel 64, XD bit, Intel VT-x, Intel VT-d, Turbo Boost, Hyper-threading, AES-NI, Intel TSX-NI, Smart Cache.
• PCI Express lanes: 44

  Coffee Lake-S (14 nm)

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, FMA3, SGX, MPX, Enhanced Intel SpeedStep Technology, Intel 64, XD bit, Intel VT-x, Intel VT-d, Turbo Boost, Hyper-threading, AES-NI, Intel TSX-NI, Intel vPro ', Intel TXT ', Smart Cache.
• Overclocking: Unlocked multiplier on K, KF, and KS models.
• i9-9900 additionally support Intel Thermal Velocity Boost.
• PCI Express lanes: 16

  Cascade Lake-X (14 nm)

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, FMA3, Enhanced Intel SpeedStep Technology, Intel 64, XD bit, Intel VT-x, Intel VT-d, Turbo Boost, Hyper-threading, AES-NI, Intel TSX-NI, Smart Cache, DL Boost.
• PCI Express lanes: 48
• Supports up to 8 DIMMs of DDR4 memory, maximum 256 GB.

  Comet Lake-S (14 nm)

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, FMA3, SGX, Enhanced Intel SpeedStep Technology, Intel 64, XD bit, Intel VT-x, Intel VT-d, Turbo Boost 3.0, Thermal Velocity Boost, Hyper-threading, AES-NI, Smart Cache.
• All models support up to DDR4-2933 memory.
• Low power and K models also support configurable TDP down.
• Non-F models also support Intel vPro.
• Overclocking: Unlocked multiplier on K and KF models.
• Embedded and low power models do not support Thermal Velocity Boost.

  Mobile processors

Coffee Lake-H (14 nm)

• No support for AVX-512
• Overclocking: unlocked multiplier on HK models; locked multiplier on H models.
• Support Intel processor with Thermal Velocity Boost.

  Comet Lake-H (14 nm)

• i9-10885H also supports Intel vPro, Intel TXT.
• i9-10885H supports cTDP down to 35 W; 19-10980HK supports cTDP up to 65 W.