Overview
The Intel Core Ultra 9 285K is Intel's flagship desktop processor built on the new Arrow Lake architecture. It combines 8 Performance-cores and 16 Efficient-cores for a total of 24 cores and 24 threads, with a maximum turbo frequency of 5.7 GHz. It uses the LGA1851 socket and supports DDR5 memory and PCIe 5.0 connectivity.
Key Features
- 24 cores (8P+16E) and 24 threads for heavy multitasking and multithreaded workloads
- Up to 5.7 GHz single-core boost for snappy responsiveness
- 36 MB L3 cache improves gaming and content creation performance
- 125W TDP (up to 250W under full load) with improved power efficiency
- LGA1851 socket compatible with Intel 800-series motherboards
Compatibility Guide
- Socket: LGA1851 (requires Intel 800-series motherboard)
- Memory: DDR5-5600 (up to 192 GB, XMP supported)
- PCIe: PCIe 5.0 x16 for graphics and NVMe SSDs
- Storage: PCIe 5.0 NVMe SSDs supported (motherboard dependent)
- Power: Recommended system PSU 650W or higher (CPU alone 125W)
- Cooling: LGA1851-compatible air or liquid cooler required; 240mm+ AIO recommended for sustained loads
Ideal Builds
- High-end gaming PC: Pair with RTX 4090 or RX 7900 XTX for 4K high-refresh gaming
- Creator workstation: Video editing, 3D rendering, compilation – any multithreaded task
- Future-proof build: LGA1851 platform expected to support several future CPU generations
Upgrade Considerations
- Upgrading from LGA1700 requires a new motherboard (no backward compatibility)
- Bottleneck: In gaming, the GPU is usually the limit; this CPU has plenty of headroom
- Overkill: For office work or light gaming, consider Core Ultra 5 or 7 instead
- Cooling: Under heavy load, power draw can approach 250W; use at least a 240mm AIO or high-end air cooler