Intel Core Ultra 9 285K 24-Core LGA 1851 Desktop Processor

CPU Cores

Processing Threads

Maximum Boost / Turbo

Processor Socket

Plan a compatible build

Build on LGA 1851 with DDR5 memory and integrated media features, including Quick Sync Video and AV1 encoding. The processor provides 24 threads and a dedicated NPU rated at up to 13 TOPS. Check the motherboard CPU support list and required BIOS version before installation. Boost speeds depend on workload, cooling and system configuration.

Choose the Processing Layout for Your Work

Intel Core Ultra 9 285K provides 24 (8 Performance + 16 Efficient) cores and 24 threads. Its Arrow Lake / TSMC N3B architecture forms the processing platform. Choose the processor around the games and applications you use, alongside the appropriate graphics hardware and memory.

Match Clock Speed to Real Workloads

The maximum boost or turbo frequency is 5.7 GHz. Cooling, power settings, application behaviour and active cores affect the actual operating frequency. Compare processors using the whole workload and configuration, rather than treating this peak figure as a sustained all-core speed.

Build Around the Correct Memory and Socket

Use a LGA 1851 motherboard with explicit support for this exact model and the required BIOS. Memory support is Up to DDR5-6400. Match the motherboard’s slots and validated memory configuration before buying the modules; a matching processor socket alone does not establish every part of compatibility.

Use the Cache as Part of the Whole Platform

The processor has 36 MB Intel Smart Cache L3 or Intel Smart Cache and 40 MB L2 cache. Cache supports the processor’s access to working data, alongside system memory. Choose the complete platform for your application instead of assuming one cache figure predicts every game or project.

Which motherboard should I choose?

Use a LGA 1851 motherboard whose CPU support list explicitly includes Intel Core Ultra 9 285K. Check its required BIOS version before installation, along with case size, power connections and cooler mounting support.

Which memory does this processor support?

Up to DDR5-6400. Choose the exact memory generation and validated configuration required by the motherboard. A processor’s memory support does not make DDR4 and DDR5 modules interchangeable.

Is the maximum boost speed guaranteed on every core?

The stated maximum is 5.7 GHz. Actual frequency varies with the workload, active cores, cooling, power settings and system configuration; it is not a promise that every core runs continuously at that speed.

What should I plan for cooling?

The processor power rating is 125 W base / 250 W maximum turbo. Choose a suitable cooling solution for the exact supplied processor version. Match the socket mounting kit, case clearance and intended sustained workload.

Does it have integrated graphics?

Intel Graphics, 4 Xe-cores, up to 2 GHz. Use a supported motherboard display output and configuration, or add a dedicated graphics card for the intended graphics workload.