INTEL ARK
Core Ultra 9 285K
Intel's flagship Arrow Lake desktop processor with 24 cores (8P+16E), 24 threads, up to 5.7 GHz Max Turbo Frequency, 36 MB L3 cache, 125W base TDP, DDR5 memory support, integrated Intel Arc graphics, and a dedicated NPU for AI workloads. Unlocked K-series for overclocking.
Full Specifications
Arrow Lake specifications sourced from Intel ARK — mapped to Evergreen canonical schema
Processor Architecture & Cores
| Codename | Arrow Lake (Core Ultra 200S Series) |
| Product Code | Core Ultra 9 285K |
| Total Cores / Threads | 24 cores (8P+16E) / 24 threads |
| Core Architecture | 8P+16E Hybrid (Performance + Efficient cores) |
| Hyper-Threading | No (1 thread per core — removed in Arrow Lake) |
| Intel Thread Director | Yes (Intel Thread Director 2.0) |
| Lithography | TSMC N3B (3 nm) |
| Socket | LGA 1851 |
Performance & Frequency
| P-core Base Frequency | 3.7 GHz |
| E-core Base Frequency | 3.2 GHz |
| Max Turbo Frequency | 5.7 GHz |
| Turbo Boost Max 3.0 | Yes |
| Thermal Velocity Boost | Yes |
| Overclocking | Unlocked (K-series) |
Cache Hierarchy
| Intel Smart Cache (L3) | 36 MB (shared) |
| Total L2 Cache | 40 MB |
| L2 Cache per Core (avg) | ~1.67 MB avg |
Memory Support
| Memory Types | DDR5-5600 / DDR5-6400 (CUDIMM) |
| Max Memory Size | 192 GB |
| Memory Channels | 2 |
| Max Memory Bandwidth | 89.6 GB/s (DDR5-5600) |
| ECC Memory Support | Yes (depends on motherboard) |
Thermal & Power
| Processor Base Power (PBP) | 125 W |
| Maximum Turbo Power (MTP) | 250 W |
| Tjunction (Max Temperature) | 105 °C |
| Thermal Solution | No (K-series — aftermarket cooler required) |
| Socket | LGA 1851 |
Integrated Graphics & AI
| Graphics Model | Intel Arc Graphics (4 Xe-cores) |
| NPU (AI Engine) | Intel AI Boost — 13 TOPS (INT8) |
Manufacturing & Platform
| Process Technology | TSMC N3B (3 nm) |
| Launch Date | Q4 2024 |
| Supported Chipsets | Intel Z890, B860, H870 |
| PCI Express Revision | 5.0 (up to 20 lanes from CPU) + 4.0 |
| Max PCIe Lanes | 24 (20 PCIe 5.0 + 4 PCIe 4.0) |
Feature Set & Technologies
| Intel Hyper-Threading | No (removed in Arrow Lake) |
| Intel Thread Director | Yes (Intel Thread Director 2.0) |
| Intel Virtualization (VT-x) | Yes |
| Intel VT-d (IOMMU) | Yes |
| Intel AES-NI | Yes |
| Intel Deep Learning Boost | Yes (VNNI) |
| NPU (AI Engine) | Intel AI Boost — 13 TOPS (INT8) |
Frequently Asked Questions
Why does the 285K have 24 cores but only 24 threads?
Arrow Lake removes Hyper-Threading entirely. Each core — whether Performance or Efficient — runs a single thread. Intel found that removing HT improved power efficiency and per-thread performance in this architecture. The 285K has 8 P-cores + 16 E-cores = 24 cores and 24 threads.
What socket and chipset does the Core Ultra 9 285K require?
The 285K uses the new LGA 1851 socket and requires Intel 800-series motherboards (Z890, B860, H870). It is not compatible with older LGA 1700 boards. For overclocking, a Z890 motherboard is required.
Does the 285K have integrated graphics?
Yes. Unlike the KF variants, the 285K includes Intel Arc integrated graphics with 4 Xe-cores. This provides basic display output and hardware-accelerated video encoding/decoding, though a dedicated GPU is recommended for gaming.
What is the NPU in the Core Ultra 9 285K?
The 285K includes an integrated Neural Processing Unit (NPU) capable of 13 TOPS (INT8). This dedicated AI engine accelerates machine learning workloads locally. Note: it does not meet the 40+ TOPS threshold for Microsoft Copilot+ PC certification.
Does the 285K come with a cooler?
No. As a K-series unlocked processor with a 250W maximum turbo power, the 285K requires an aftermarket cooling solution. A high-end 360mm AIO liquid cooler or premium tower cooler is recommended for sustained performance.
JSON-LD Schema Preview — Intel ARK Source
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