Intel Core Ultra 5 245K
14-core Arrow Lake desktop processor with 6 Performance-cores, 8 Efficient-cores, 14 threads and up to 5.2 GHz.
Quick Product Overview
The Intel Core Ultra 5 245K is a mainstream unlocked Arrow Lake desktop processor from Intel's Core Ultra Series 2 family. It combines 6 Performance-cores with 8 Efficient-cores for a total of 14 physical cores and 14 threads.
Like the other Arrow Lake desktop processors, Hyper-Threading is not used. Instead, all 14 physical cores provide one processing thread each.
The processor moves Intel's mainstream unlocked platform to LGA1851, DDR5-only memory and newer platform connectivity while significantly reducing peak power compared with many 14th-generation Intel K-series processors.
Key Specifications
| Processor | Intel Core Ultra 5 245K |
|---|---|
| Product Family | Intel Core Ultra Processors Series 2 |
| Architecture / Code Name | Arrow Lake |
| Total Cores | 14 |
| Performance-cores | 6 |
| Efficient-cores | 8 |
| Total Threads | 14 |
| Hyper-Threading | No |
| Maximum Turbo Frequency | Up to 5.2 GHz |
| P-Core Maximum Turbo | Up to 5.2 GHz |
| E-Core Maximum Turbo | Up to 4.6 GHz |
| P-Core Base Frequency | 4.2 GHz |
| E-Core Base Frequency | 3.6 GHz |
| Intel Smart Cache | 24 MB |
| Total L2 Cache | 26 MB |
| Processor Base Power | 125W |
| Maximum Turbo Power | 159W |
| Socket | LGA1851 |
| Memory Type | DDR5 only |
| Official Memory Speed | Up to DDR5-6400 |
| PCI Express | PCIe 5.0 and PCIe 4.0 |
| CPU PCIe Connectivity | 20 PCIe 5.0 lanes + 4 PCIe 4.0 lanes |
| Integrated Graphics | Intel Graphics |
| NPU | Integrated Intel AI Boost |
| Unlocked Multiplier | Yes |
| Cooler Included | No |
| Original Launch | October 2024 |
Performance & Use-Case Information
Productivity
Productivity is one of the 245K's stronger areas. Independent testing showed useful gains in several rendering and heavily threaded workloads compared with the Core i5-14600K.
Gaming
Gaming performance was the major weakness at launch. The 245K frequently trailed its Core i5-14600K predecessor and AMD alternatives in CPU-limited testing.
Rendering
Blender and similar workloads can make effective use of the processor's combination of six P-cores and eight E-cores.
Video Production
Adobe Premiere Pro and supported media workflows can benefit from both the CPU cores and Intel's integrated media engine.
Efficiency
Arrow Lake substantially reduced power demand compared with Intel's previous-generation unlocked mainstream processors in many heavily threaded workloads.
Mixed Use
The 245K fits best in systems where productivity, efficiency and modern platform features matter more than maximum gaming frame rates.
Power Efficiency & Thermals
Intel specifies 125W Processor Base Power and 159W Maximum Turbo Power, considerably below the 250W-class maximum figures of the higher-tier Arrow Lake K processors.
TechSpot measured approximately 139W CPU consumption during its Cinebench 2024 testing, representing substantially lower power consumption than the preceding Core i5-14600K in the same workload.
In TechSpot's test system, the processor also remained well below its 105°C maximum junction temperature under the tested sustained workload. Actual temperatures depend on the cooler, motherboard, case airflow, BIOS and workload.
Platform & Compatibility
LGA1851
The 245K uses Intel's newer LGA1851 socket and cannot be installed in older LGA1700 motherboards.
Z890
Z890 is the natural enthusiast platform for the unlocked 245K, particularly when CPU or memory tuning is desired.
DDR5 Only
Arrow Lake desktop processors do not provide DDR4 compatibility. The 245K officially supports memory speeds up to DDR5-6400.
PCIe Connectivity
The CPU provides PCIe 5.0 connectivity for high-bandwidth graphics and storage while also providing dedicated PCIe 4.0 lanes.
Works Best With
These are examples of well-matched components, not mandatory purchases. Verify motherboard BIOS, memory support, cooler mounting and case dimensions before buying.
MSI MAG Z890 TOMAHAWK WIFI
A Z890 LGA1851 motherboard provides the platform features expected for an unlocked Core Ultra K-series processor, including DDR5 and modern PCIe connectivity.
G.SKILL Trident Z5 DDR5
An Intel XMP-compatible DDR5 kit is a natural match. DDR5-6400 is within Intel's official specification, while faster XMP settings are memory overclocking.
Quality LGA1851 Air or Liquid Cooler
The 159W maximum turbo rating makes the 245K less demanding than the flagship Arrow Lake models, but good cooling remains important for sustained turbo performance.
Integrated Graphics & AI Features
The Core Ultra 5 245K includes integrated Intel Graphics, unlike the 245KF variant. This provides basic display capability, troubleshooting support and Intel's media acceleration features.
The Arrow Lake platform also includes an integrated Intel AI Boost NPU for supported local AI workloads. The NPU is an additional accelerator rather than the primary reason to choose this desktop processor.
What Independent Reviewers Found
TechSpot — Productivity
TechSpot found the 245K generally stronger in productivity than gaming. It beat the 14600K in Cinebench multi-core, Blender, Corona and Premiere Pro in the tested configurations.
TechSpot — Gaming
Across TechSpot's 14-game launch test, the 245K averaged about 8% behind the Core i5-14600K and 14% behind the Ryzen 7 9700X.
Efficiency
Power behavior improved substantially over the previous Intel generation in several workloads, making efficiency one of Arrow Lake's more meaningful improvements.
Where Reviewers Agree — And Where Context Matters
Where It Performs Well
- Good multithreaded productivity
- Improved power behavior versus 14th Gen Core i5
- Lower thermal demands than many older Intel K-series CPUs
- DDR5-6400 support
- PCIe 5.0 storage without sacrificing GPU bandwidth
- Modern LGA1851 platform
Where Context Matters
- Gaming performance was disappointing at launch
- Can trail the older Core i5-14600K in games
- No DDR4 support
- Requires an LGA1851 motherboard
- Not every productivity workload improves
- Newer Core Ultra 5 250K Plus now exists
Strengths & Limitations
Strengths
- 14 physical cores
- Good productivity performance
- Up to 5.2 GHz
- 24MB Smart Cache
- 26MB L2 cache
- 159W maximum turbo power
- DDR5-6400 support
- PCIe 5.0 support
- Integrated graphics
- Unlocked multiplier
Limitations
- Weak generational gaming improvement
- Often slower than Ryzen alternatives in gaming
- No Hyper-Threading
- No DDR4 compatibility
- Requires LGA1851 motherboard
- Superseded by Core Ultra 5 250K Plus
- No boxed cooler included
2026 Buying Context
The Core Ultra 5 245K occupies a different position in 2026 than it did at launch. Intel has since introduced the Core Ultra 5 250K Plus, which increases the design from 14 cores to 18 cores by adding four Efficient-cores.
Intel also increased officially supported memory speed from DDR5-6400 on the original non-Plus Series 2 chips to DDR5-7200 on the newer Plus models and introduced additional performance optimizations.
That means the 245K now makes the most sense when its market price is sufficiently lower than the 250K Plus rather than as Intel's strongest current Core Ultra 5 choice.
Upgrade Considerations
From Core i5-14600K
The move is difficult to justify for gaming alone because the older 14600K can actually be faster in many titles. Efficiency and platform features are stronger reasons to change.
From Older Intel Systems
A substantially older PC gains DDR5, newer PCIe connectivity, improved efficiency and a modern Intel platform, but the move also requires a new LGA1851 motherboard.
For New Builds
Price is critical. At a substantial discount the 245K can make sense as a productivity-oriented midrange CPU, but the newer 250K Plus should also be compared before purchase.
Alternatives to Consider
Intel Core Ultra 5 250K Plus
Intel's newer replacement adds four E-cores for an 18-core configuration, faster official DDR5 support and additional platform optimizations.
AMD Ryzen 7 9700X
A strong AM5 alternative with very good gaming performance, excellent efficiency and access to AMD's continuing AM5 platform.
Intel Core i7-14700K
The older LGA1700 processor offers substantially more cores and strong productivity performance, though with much higher peak power and cooling requirements.
Who Is It Best For?
Productivity-Focused Users
Buyers running rendering, encoding, content creation and other workloads that benefit from Arrow Lake's multicore performance.
Discount LGA1851 Builds
Builders who find the 245K at a substantially lower price than the newer 250K Plus and want access to Intel's LGA1851 platform.
Efficiency-Conscious Intel Buyers
Intel users who place greater importance on reduced power and thermal demands than on maximum CPU-limited gaming performance.
Rockin Box Tech Research Summary
Research from Intel's official documentation and independent testing shows the Core Ultra 5 245K to be a mixed but technically interesting midrange Arrow Lake processor.
Its strongest improvements are productivity efficiency, lower power requirements, DDR5-6400 support and the move to Intel's newer LGA1851 platform.
Gaming is its largest weakness. Independent launch testing found the 245K frequently trailing both the preceding Core i5-14600K and competing AMD processors.
By 2026, Intel's newer Core Ultra 5 250K Plus has also changed the buying equation. The original 245K is therefore most attractive when available at a sufficiently low price rather than as the default choice for a new midrange Intel gaming system.