Intel® Core™ Ultra 5 250K Plus

The Intel Core Ultra 5 250K Plus is a desktop processor with a hybrid 18-core layout (6 performance cores + 12 efficiency cores) and 18 threads, built on the Arrow Lake architecture (Compute Tile 's N3B process). It launched in Jan 2026. Clocks run from 4.2 GHz base to 5.3 GHz boost. A 30-MB L3 cache backs the cores (3.4 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, Extended Page Tables (EPT), Control-flow Enforcement (CET).

The Intel Core Ultra 5 250K Plus scores 4,874 in single-core performance and 53,140 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 16,094 for overall performance, 41,365 for productivity performance, 38,000 for creator performance, 62,772 for engineering performance and 27,907 for gaming performance. Its multi-core throughput works out to 2,952 per core, 2,952 per thread and 425 per watt. Its computed efficiency index is 1,440. Its performance index is 199, so its overall performance is 99% 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 5 250K Plus scores 124,580 in integer math, 161,955 in floating-point math, 565,996 in compression, 41,952 in cryptography, 3,436 in physics simulation, 44,371 in vector SIMD, 483 in the prime sieve and 68,760 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 112% above in integer math, 253% above in floating-point math, 148% above in compression, 265% above in cryptography, 215% above in physics simulation, 186% above in vector SIMD, 621% above in the prime sieve and 204% 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 5 250K Plus has 18 physical cores and runs 18 logical threads. It uses a hybrid layout of 6 performance cores and 12 efficiency cores. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 4.20 GHz and boosts up to 5.30 GHz.

The Intel Core Ultra 5 250K Plus is a desktop processor, belongs to the Intel Core Ultra 5 family, uses the Arrow Lake architecture, carries the codename Arrow Lake and is manufactured on a Compute Tile 's N3B process. It launched in Jan 2026.

The Intel Core Ultra 5 250K Plus has 1.78 MB of L1 cache, 30 MB of L2 cache and 30 MB of L3 cache. That adds up to about 61.8 MB of cache, or 3.43 MB per core.

The Intel Core Ultra 5 250K Plus has a 3-level cache hierarchy: L1 at 1.8 MB, L2 at 30 MB and L3 at 30 MB. L2 is the largest level and makes up about 49% of the cache listed here.

The Intel Core Ultra 5 250K Plus 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 5 250K Plus includes integrated graphics (Intel Graphics) and clocks the graphics up to 1.90 GHz.

The Intel Core Ultra 5 250K Plus uses the FCLGA1851 socket, supports PCI Express 5.0 and provides up to 24 PCIe lanes.

The Intel Core Ultra 5 250K Plus 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 5 250K Plus is manufactured by TSMC. It launched at a price of $219.

The Intel Core Ultra 5 250K Plus is also identified by the model number 250K PLUS and the processor number 250K PLUS.

Feex has recorded 68% of the specifications it tracks for the Intel Core Ultra 5 250K Plus. 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 and Part Number.

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