Intel® Core™ Ultra 9 285K

The Intel Core Ultra 9 285K is a desktop processor with a hybrid 24-core layout (8 performance cores + 16 efficiency cores) and 24 threads, built on the Arrow Lake architecture (Compute Tile 's N3B process). It launched in Oct 2024. Clocks run from 3.7 GHz base to 5.7 GHz boost. A 36-MB L3 cache backs the cores (3.3 MB per core). It addresses DDR5 memory up to 256 GB across 2 channels. The chip drops into the FCLGA1851 socket and exposes PCIe 5.0 (24 lanes). Rated TDP is 125 W. Notable platform capabilities: Gaussian Neural Accelerator, AVX-VNNI, Extended Page Tables (EPT), Control-flow Enforcement (CET).

The Intel Core Ultra 9 285K scores 5,088 in single-core performance and 67,290 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 18,503 for overall performance, 50,862 for productivity performance, 46,168 for creator performance, 85,795 for engineering performance and 32,087 for gaming performance. Its multi-core throughput works out to 2,804 per core, 2,804 per thread and 538 per watt. Its computed efficiency index is 1,655. Its performance index is 229, so its overall performance is 129% above the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the Intel Core Ultra 9 285K scores 172,389 in integer math, 224,328 in floating-point math, 790,091 in compression, 57,758 in cryptography, 3,942 in physics simulation, 62,266 in vector SIMD, 540 in the prime sieve and 94,939 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 193% above in integer math, 389% above in floating-point math, 246% above in compression, 403% above in cryptography, 262% above in physics simulation, 301% above in vector SIMD, 706% above in the prime sieve and 319% above in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The Intel Core Ultra 9 285K has 24 physical cores and runs 24 logical threads. It uses a hybrid layout of 8 performance cores and 16 efficiency cores. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 3.70 GHz and boosts up to 5.70 GHz.

The Intel Core Ultra 9 285K is a desktop processor, belongs to the Intel Core Ultra 9 family, uses the Arrow Lake architecture, carries the codename Arrow Lake and is manufactured on a Compute Tile 's N3B process. It launched in Oct 2024.

The Intel Core Ultra 9 285K has 2.38 MB of L1 cache, 40 MB of L2 cache and 36 MB of L3 cache. That adds up to about 78.4 MB of cache, or 3.27 MB per core.

The Intel Core Ultra 9 285K has a 3-level cache hierarchy: L1 at 2.4 MB, L2 at 40 MB and L3 at 36 MB. L2 is the largest level and makes up about 51% of the cache listed here.

The Intel Core Ultra 9 285K supports DDR5 memory, addresses up to 256 GB of memory and uses 2 memory channels. It does not support DDR4 and LPDDR memory. It supports ECC memory.

The Intel Core Ultra 9 285K includes integrated graphics (Intel Graphics) and clocks the graphics up to 2.00 GHz.

The Intel Core Ultra 9 285K uses the FCLGA1851 socket, supports PCI Express 5.0 and provides up to 24 PCIe lanes.

The Intel Core Ultra 9 285K has a rated TDP of 125 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The Intel Core Ultra 9 285K is manufactured by TSMC. It launched at a price of $589.

The Intel Core Ultra 9 285K is also identified by the part number SRQD5, the model number 285K and the processor number 285.

Feex has recorded 69% of the specifications it tracks for the Intel Core Ultra 9 285K. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L2 Cache (per Core) and L4 Cache. Memory Support: Memory Bandwidth and Max Memory Speed. Graphics: Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size and Die Count. Naming & Aliases: SKU.

Processors that use the same FCLGA1851 socket as the Intel Core Ultra 9 285K and have the closest multi-core scores in the Feex database include Intel Core Ultra 7 270K Plus, Intel Core Ultra 7 265K, Intel Core Ultra 7 265KF, Intel Core Ultra 9 285 and Intel Core Ultra 5 250K Plus.