The Intel Ultra 5 245K is a desktop CPU from Intel's Arrow Lake family designed for modern computing workloads. It features a hybrid core architecture with 14 cores (6 performance-cores and 8 efficient-cores) and 14 threads, a large combined cache, support for DDR5 memory and PCI Express 5.0, and compatibility with FCLGA18W (socket 1851) motherboards. With performance-core base and turbo frequencies up to 5.2 GHz and advanced platform features such as Intel vPro, hardware-based security, and AI acceleration, this processor addresses multitasking, content creation, and demanding professional applications.
Advantages
The processor combines high single-thread turbo frequency with multiple efficient cores to balance peak performance and background task handling. A substantial cache and support for fast DDR5 memory improve data throughput and reduce latency for complex workloads. Platform features including PCIe 5.0 lanes, extensive virtualization and management technologies, and hardware security functions provide a flexible foundation for workstation and business systems. Power management and turbo mechanisms enable scaling performance up to a 5.20 GHz turbo clock while respecting configured thermal envelopes.
Suitable for
- Content creation and video editing workflows that benefit from high single-thread and multi-core performance
- Software development, compiling and virtualized test environments using Intel Virtualization technologies
- Business workstations and small servers requiring remote management, security features and stable platform support
- High-performance desktop systems using DDR5 memory and PCIe 5.0 peripherals
Key specifications
- Architecture: Arrow Lake hybrid design with performance- and efficient-cores
- Cores / Threads: 14 cores (6 performance + 8 efficient) and 14 threads
- Base clock rates: performance-core 4.2 GHz, efficient-core 3.6 GHz
- Maximum turbo frequency: up to 5.20 GHz (performance-core turbo 5.2 GHz; efficient-core turbo 4.6 GHz)
- Cache: combined CPU cache approximately 24 MB and L2 cache 26 MB
- Socket: FCLGA18W (Socket 1851) compatibility
- Memory support: DDR5, dual-channel, up to 192 GB, supported speed up to 6400 MHz (PC5-51200)
- TDP: nominal 125 W, maximum 159 W
- Expansion: up to 24 PCIe lanes and DMI lanes supporting platform connectivity
- Integrated graphics: Intel Graphics with base frequency 300 MHz
How to use
Install the processor into a compatible FCLGA18W (1851) motherboard following the motherboard and CPU manufacturer instructions. Use an appropriate cooling solution rated for the processor's thermal design power and configure BIOS/UEFI settings for memory speed, core behavior and power limits as required by your workload. Install up-to-date chipset and platform drivers from the motherboard vendor and apply Intel microcode/firmware updates when recommended. For systems using virtualization, enable virtualization features in firmware and configure guest environments per virtualization platform guidelines.
Usage recommendations
For reliable performance, pair the processor with DDR5 memory modules at supported speeds, a motherboard with proper VRM cooling and a CPU cooler that can handle the stated TDP and peak turbo conditions. Ensure BIOS updates and platform firmware are current to leverage security, manageability and performance features such as Intel vPro, Turbo Boost and AI acceleration. For heavy sustained workloads, monitor temperatures and adjust power limits or cooling to maintain stable operation.
