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Intel Core Ultra 5 250K Plus 18 Core 5.3GHz LGA1851 125W Tray Processor
Intel Core Ultra 5 processor 250K Plus is a desktop processor with 18 cores (6 Performance, 12 Efficient), 18 threads, and up to 5.3 GHz Max Turbo Frequency. It uses the FCLGA1851 socket, includes 30 MB Intel Smart Cache plus 30 MB L2 cache, and supports DDR5 up to 7200 MT/s. In addition, it includes Intel Graphics, the Intel AI Boost NPU, and PCIe 5.0 support. This is the tray version, which does not include a stock cooler. Available at Alfrensia for 11,999 EGP.
⚡ Engineering Highlights at a Glance:
- 18 Cores (6P + 12E): 6 Performance-cores handle heavy single-threaded and lightly-threaded work, while 12 Efficient-cores handle background tasks and multi-threaded workloads.
- Up to 5.3 GHz Max Turbo: Performance-core Max Turbo reaches 5.3 GHz, and Efficient-core Max Turbo reaches 4.6 GHz for responsive performance under load.
- 30 MB Intel Smart Cache + 30 MB L2: Reduces memory latency for games and productivity applications.
- 125W Base / 159W Turbo Power: The processor uses 125W Processor Base Power and up to 159W Maximum Turbo Power for sustained performance.
- DDR5 up to 7200 MT/s: Supports up to 256 GB across two memory channels, with ECC memory support.
- Intel Graphics (4 Xe-cores): Integrated graphics running up to 1.9 GHz, with support for HDMI 2.1, DisplayPort 2.1 UHBR20, and up to four displays.
- Intel AI Boost NPU: Dedicated neural processing unit rated at 13 TOPS (Int8) for AI workloads, alongside CPU and GPU AI acceleration.
Arrow Lake Architecture and Platform Support
The Core Ultra 5 250K Plus is part of the Intel Core Ultra Processors (Series 2) family, which uses the Arrow Lake architecture and TSMC N3B lithography. Because the processor uses the FCLGA1851 socket, it works with Intel 800-series chipsets such as Z890, B860, and H810. The processor supports PCIe 5.0 and PCIe 4.0 with up to 24 lanes, plus Intel Thunderbolt 4 and Direct Media Interface (DMI) revision 4. In addition, it supports Intel vPro Enterprise, Intel Active Management Technology, and Intel Standard Manageability for business deployments.
AI Acceleration with CPU, GPU, and NPU
The processor includes three AI acceleration engines. The CPU uses Intel Deep Learning Boost, with a total platform peak of 30 TOPS (Int8). The integrated Intel Graphics provides 8 TOPS (Int8) through its 4 Xe-cores. The Intel AI Boost NPU provides 13 TOPS (Int8) with sparsity support. Because these engines work together, the processor can run AI workloads locally without a discrete GPU. In addition, it supports AI frameworks including OpenVINO, WindowsML, DirectML, ONNX RT, WebNN, and WebGPU. This makes the processor suitable for local inference, Windows Studio Effects, and AI-enhanced productivity tasks.
Integrated Graphics and Media Engine
Intel Graphics includes 4 Xe-cores running up to 1.9 GHz with a 300 MHz base frequency. Because it supports HDMI 2.1 FRL at 7680 x 4320 @ 60Hz and DisplayPort 2.1 UHBR20 at 7680 x 4320 @ 60Hz, the processor can drive high-resolution displays without a discrete GPU. In addition, the media engine supports H.264, H.265 (HEVC), and AV1 hardware encode and decode, plus Intel Quick Sync Video. As a result, the processor handles video playback, streaming, and lightweight encoding tasks efficiently.
Who is the Core Ultra 5 250K Plus For?
Expert Advice & Build Considerations
Tray Version — Cooler Not Included
This is the tray version, which ships without a stock cooler and without retail packaging. You will need to supply an LGA1851-compatible air or liquid cooler. Because the processor has a 125W base power and up to 159W Maximum Turbo Power, a cooler rated for at least 160W is recommended for sustained loads.
No Hyper-Threading
The Core Ultra 5 250K Plus does not support Intel Hyper-Threading Technology. As a result, the total thread count equals the total core count (18 threads from 18 cores). For multi-threaded workloads, the 12 Efficient-cores provide additional throughput, but single-threaded performance depends on the 6 Performance-cores.
📐 Memory and Motherboard Pairing
The processor supports DDR5 up to 7200 MT/s across two memory channels with up to 256 GB total. For best performance, use a 2-DIMM configuration with an Intel 800-series motherboard. Because the processor supports ECC memory, workstations can use ECC DIMMs for error correction. Confirm your motherboard supports the memory speed you plan to use, and enable XMP in the BIOS to reach the rated speed.
Technical Specifications
| Model | Intel Core Ultra 5 processor 250K Plus |
| Brand | Intel |
| SKU / MPN | AT807683B9B4886 |
| EAN | 8592978840327 |
| Product Collection | Intel Core Ultra Processors (Series 2) |
| Code Name | Arrow Lake |
| Total Cores | 18 (6 Performance + 12 Efficient) |
| Total Threads | 18 |
| Max Turbo Frequency | 5.3 GHz |
| Performance-core Base / Turbo | 4.2 GHz / 5.3 GHz |
| Efficient-core Base / Turbo | 3.3 GHz / 4.6 GHz |
| Cache | 30 MB Intel Smart Cache + 30 MB L2 |
| Processor Base Power | 125W |
| Maximum Turbo Power | 159W |
| CPU Lithography | TSMC N3B |
| CPU Socket | FCLGA1851 |
| Memory Support | DDR5 up to 7200 MT/s, up to 256 GB, ECC supported |
| Integrated Graphics | Intel Graphics (4 Xe-cores), up to 1.9 GHz |
| NPU | Intel AI Boost, 13 TOPS (Int8) |
| Overall Peak TOPS | 30 (Int8, platform total) |
| PCI Express | PCIe 5.0 and 4.0, up to 24 lanes |
| Thunderbolt | Intel Thunderbolt 4 |
| Max Operating Temperature | 105 °C |
| Package Size | 45 mm x 37.5 mm |
| Included Cooler | Not Included (Tray Version) |
Expert Recommendation: Getting the Most from Your 250K Plus
Before building, choose an LGA1851-compatible cooler rated for at least 160W, because the processor reaches 159W Maximum Turbo Power under sustained loads. Pair the processor with an Intel 800-series motherboard (Z890, B860, or H810) to access PCIe 5.0 and Thunderbolt 4. Install two DDR5 DIMMs rather than four so memory runs at the highest stable speed. Enable XMP in the BIOS to reach the kit’s rated speed. If you plan to use the integrated graphics for display output, confirm your motherboard has HDMI 2.1 or DisplayPort 2.1 outputs. For AI workloads, install Intel OpenVINO or use Windows Studio Effects to take advantage of the NPU’s 13 TOPS. Because this is the tray version, there is no boxed cooler or retail packaging; handle the processor carefully by the edges and store it in an anti-static bag if not installed immediately. Update to the latest BIOS for best compatibility with Arrow Lake processors.
Frequently Asked Questions
Does the Intel Core Ultra 5 250K Plus include a cooler?
No. This is the tray version, which ships without a stock cooler and without retail packaging. You will need to supply an LGA1851-compatible air or liquid cooler.
Does this processor support Hyper-Threading?
No. The Core Ultra 5 250K Plus does not support Intel Hyper-Threading Technology, so the total thread count equals the total core count (18 threads from 18 cores).
What memory speed does the 250K Plus support?
The processor supports DDR5 memory up to 7200 MT/s across two memory channels, with up to 256 GB total. It also supports ECC memory. Actual stable speeds depend on your motherboard and memory kit.
What AI acceleration does this processor include?
The processor includes three AI engines: the CPU (Intel Deep Learning Boost), the integrated GPU (8 TOPS), and the Intel AI Boost NPU (13 TOPS). Together, they provide a platform peak of 30 TOPS (Int8) for AI workloads.
What socket and chipset does this processor use?
The Core Ultra 5 250K Plus uses the FCLGA1851 socket and works with Intel 800-series chipsets, including Z890, B860, and H810. It supports PCIe 5.0 and PCIe 4.0 with up to 24 lanes.





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