Intel Unveils Core Ultra 5 250K Plus and Core Ultra 7 270K Plus Desktop Processors

Intel has officially introduced the Core Ultra 5 250K Plus and Core Ultra 7 270K Plus desktop CPUs, expanding its lineup for the Socket LGA1851 platform. These new processors are fully compatible with existing Intel 800-series chipset motherboards, though some models may require a UEFI firmware update to ensure optimal performance and compatibility.

Advanced Arrow Lake Architecture and Disaggregated Silicon Design

Both the Core Ultra 5 250K Plus and Core Ultra 7 270K Plus are built on Intel’s latest "Arrow Lake" microarchitecture. The processors utilize a disaggregated silicon approach, with the Compute tile (housing the CPU cores) manufactured on TSMC’s advanced N3B (3 nm) process. The Graphics tile leverages TSMC’s N5 (5 nm) node, while the SoC and I/O tiles are produced on the N6 (6 nm) node. This multi-tile design enables improved efficiency and performance across compute, graphics, and connectivity functions.

Enhanced Specifications and Performance

The Core Ultra 5 250K Plus, priced at $199, and the Core Ultra 7 270K Plus, at $299, are positioned to replace the current Core Ultra 5 245K and Core Ultra 7 265K models. Both new CPUs feature increased E-core (Efficiency core) counts, expanded L3 cache sizes, higher P-core (Performance core) maximum boost frequencies, and a 900 MHz faster die-to-die I/O frequency between the Compute and SoC tiles. This effectively enables the "200S Boost Mode" by default, delivering a notable performance uplift.

  • Core Ultra 5 250K Plus: Features a 6P+12E core configuration, up from the 6P+8E setup in the 245K. The shared L3 cache has been increased to 30 MB (from 24 MB), and the P-core maximum boost frequency now reaches 5.30 GHz (up from 5.20 GHz).
  • Core Ultra 7 270K Plus: Unlocks the full potential of the "Arrow Lake-S" silicon with 8 P-cores and 16 E-cores, alongside a complete 36 MB L3 cache. In comparison, the 265K offers an 8P+12E configuration and 30 MB of L3 cache. The 270K Plus is differentiated from the flagship Core Ultra 9 285K by the absence of the Thermal Velocity Boost algorithm and a slightly lower maximum P-core boost frequency of 5.50 GHz (versus 5.70 GHz on the 285K). However, it does include Turbo Boost Max 3.0 technology, similar to the 265K.

Memory Support and Overclocking Capabilities

Both new processors natively support DDR5-7200 memory speeds, an upgrade from the DDR5-6400 support found in previous Arrow Lake desktop chips. Intel’s warranty also covers memory overclocking up to DDR5-8000, providing enthusiasts with greater flexibility. Additionally, the Core Ultra 5 250K Plus and Core Ultra 7 270K Plus introduce native support for quad-rank DDR5 CUDIMMs. These next-generation UDIMMs feature four DDR5 ranks and a client clock driver (CKD), enabling higher memory densities and speeds without relying on costly high-density DRAM chips. Full support for 4-rank CUDIMMs will depend on motherboard manufacturers implementing the necessary hardware and firmware updates.

New Software Optimization Tool

Intel has also announced the Binary Optimization Tool, a utility designed to help users optimize application and game binaries for maximum performance on Arrow Lake-S processors. More details on this tool are expected to be available in upcoming reviews.

Availability and Pricing

The Core Ultra 5 250K Plus and Core Ultra 7 270K Plus are set to replace the 245K and 265K at their respective price points. Both processors will be available at retail starting March 26, 2026, with suggested prices of $199 and $299.