Intel Core Ultra 9 285K Desktop Processor, 24 Cores, 5.7 GHz Unlocked, 40MB Cache, Compatible with Intel 800 Series Moth
Intel

Intel Core Ultra 9 285K Desktop Processor

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Our Take

Intel's current flagship desktop processor for enthusiasts and power users, the Core Ultra 9 285K sits at the top of Intel's Arrow Lake lineup. With 24 cores and an unlocked multiplier, it targets content creators, streamers, and heavy multitaskers who need serious CPU headroom. Requires a new Intel 800 series motherboard, making it a platform investment.

Key Features

24-core configuration (8 Performance cores + 16 Efficient cores) using Intel's hybrid architecture

Maximum boost clock of 5.7 GHz on Performance cores

40MB Intel Smart Cache on-die

Unlocked multiplier for overclocking via compatible Z890 motherboards

Built on Intel's 3nm-class Intel 20A/TSMC process node (Arrow Lake architecture)

Supports DDR5 memory; no DDR4 compatibility

Our Verdict

Best suited to enthusiasts building a fresh high-end system who want Intel's latest architecture and long-term platform headroom. If you're upgrading from 12th or 13th Gen, the cost of switching platform is hard to justify. AMD's Ryzen 9 9950X is a serious alternative worth comparing before committing.

What We Like

  • Excellent multi-threaded performance for demanding workloads like video rendering and compilation
  • Unlocked multiplier gives experienced builders meaningful headroom to tune performance
  • Improved power efficiency compared to the previous 13th/14th Gen flagships
  • 40MB cache handles large datasets without significant latency penalties

Things to Consider

  • Single-threaded and gaming performance doesn't clearly beat the outgoing 14900K in all scenarios
  • Requires an entirely new platform (LGA1851 + 800 series board + DDR5), adding significant cost
  • Dropping Hyper-Threading on P-cores is a controversial trade-off that affects some threaded workloads
  • Premium pricing puts it in direct competition with AMD's Ryzen 9 9950X, which trades blows in many benchmarks

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