Overview

The Intel Core Ultra 9 Processor 285K is Intel's flagship desktop CPU based on the Arrow Lake architecture. With 24 cores (8 performance cores and 16 efficiency cores) and 24 threads, it delivers outstanding performance across both single-threaded and multi-threaded workloads. The base clock is 2.5 GHz, boosting up to 5.6 GHz, and it features 36 MB of L3 cache. Built on a 3nm process, the TDP is rated at 65W, balancing high performance with power efficiency. A standout feature is the integrated NPU (Neural Processing Unit) designed to accelerate Windows 11 AI tasks, making this CPU future-ready for AI-enhanced applications. It supports PCI Express Gen 5.0 and DDR5-6400 memory, ensuring maximum bandwidth with the latest motherboards and components. This is a retail boxed CPU, meaning no cooler is included. Positioned as a high-end processor for enthusiasts, the 285K caters to gamers, creators, and professionals seeking top-tier performance.

Compatibility Guide

The Intel Core Ultra 9 285K requires an LGA1851 socket motherboard, such as Intel 800 series chipsets (e.g., Z890). It is not compatible with LGA1700 boards. Memory: Dual-channel DDR5 up to DDR5-6400 supported. PCIe: Gen 5.0 support for graphics cards and SSDs. Cooling: A separate CPU cooler is mandatory; consider a high-end air cooler or 240mm+ AIO liquid cooler for sustained workloads. Power supply: For a high-end GPU, a 850W or higher PSU is recommended.

Product Info

The Intel Core Ultra 9 285K launched in January 2025 and is Intel's premier desktop CPU. The retail price in Japan is approximately ¥95,000 (via). It competes directly with AMD's Ryzen 9 series. Cores/Threads: 24 (8P+16E) / 24T Base/Boost clock: 2.5 GHz / 5.6 GHz L3 cache: 36 MB, TDP: 65W Socket: LGA1851, Process: 3nm Memory support: DDR5-6400, PCIe Gen 5.0 Integrated NPU for AI acceleration * No cooler included

Best Use Cases

High-end gaming: Single-thread performance shines in modern AAA titles, with efficient cores handling background tasks. Content creation and engineering: Video editing, 3D rendering, and CAD benefit from the 24 cores, plus AI acceleration from the NPU. * Future-proof builders: Support for DDR5 and PCIe 5.0 makes this CPU a solid foundation for a long-lasting system, though motherboard selection is currently limited.

Things to Consider

The Core Ultra 9 285K requires a new LGA1851 motherboard, making it a costly upgrade for those on older platforms. No cooler is included, so budget for a capable cooling solution. While the TDP appears low, boost power draw can be higher, especially under heavy multi-threaded loads. Compared to AMD's Ryzen 9 9950X, the 285K may trail in pure multi-threaded benchmarks. Evaluate your primary workloads before purchasing. Finally, the price of ~¥95,000 is steep; if your budget is tight, consider the Core Ultra 7 or Core i5 series.

Product Disclosure (Amazon)

  • Manufacturer: インテル
  • Seller: DDstore 適格請求業者
  • Fulfilled by: DDstore 適格請求業者
  • ASIN: B0DFKC99VL
  • Note: This article covers a manufacturer-made product based on Amazon listing details.