Intel® Core™ Ultra 5 250KF Plus

The Intel Core Ultra 5 250KF 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 250KF Plus scores 4,930 in single-core performance and 52,532 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 16,093 for overall performance, 41,048 for productivity performance, 37,767 for creator performance, 62,053 for engineering performance and 27,923 for gaming performance. Its multi-core throughput works out to 2,918 per core, 2,918 per thread and 420 per watt. Its computed efficiency index is 1,439. 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 250KF Plus scores 122,195 in integer math, 158,548 in floating-point math, 549,543 in compression, 40,984 in cryptography, 3,181 in physics simulation, 42,541 in vector SIMD, 447 in the prime sieve and 66,698 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 107% above in integer math, 245% above in floating-point math, 141% above in compression, 257% above in cryptography, 192% above in physics simulation, 174% above in vector SIMD, 567% above in the prime sieve and 194% 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 250KF 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 250KF 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 250KF 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 250KF 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 250KF 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 does not support ECC memory.

The Intel Core Ultra 5 250KF Plus does not include integrated graphics, so a discrete graphics card is required for display output.

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

The Intel Core Ultra 5 250KF 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 250KF Plus is manufactured by TSMC. It launched at a price of $204.

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

Feex has recorded 64% of the specifications it tracks for the Intel Core Ultra 5 250KF 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. 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 250KF Plus and have the closest multi-core scores in the Feex database include Intel Core Ultra 5 250K Plus, Intel Core Ultra 7 265, Intel Core Ultra 7 265F, Intel Core Ultra 9 285 and Intel Core Ultra 7 265KF.