Intel Core Ultra 9 285K

Release & Generation

• Released October 2024
• Arrow Lake
• First tiled desktop Arrow Lake generation on LGA1851, replacing the Raptor Lake refresh

Core Configuration & Speeds

• 8 Performance-cores + 16 Efficiency-cores = 24 cores / 24 threads (no Hyper-Threading)
• 76 MB cache (36 MB L3 + 40 MB L2)
• Up to 5.7 GHz boost (3.7 GHz Performance-core base, 3.2 GHz Efficiency-core base)
• 125 W base power (up to 250 W maximum turbo power)

Memory Support

• DDR5 only; dual-channel DDR5 officially supported up to 6400 MT/s

Socket

• LGA1851 (FCLGA1851); designed for Intel 800-series chipset motherboards (e.g., Z890)

Variants

• Core Ultra 9 285K: Unlocked multiplier for overclocking; includes integrated Intel graphics
• Core Ultra 9 285: Locked multiplier (no overclocking); lower 65 W base power; same 8 Performance-cores + 16 Efficiency-cores layout with integrated graphics
• No 285KF/285F variants are listed by Intel or major spec aggregators as of now