Quick Verdict
A solid Arrow Lake processor that was reasonably priced at launch but has been made largely redundant by the 250KF Plus, which offers more cores, higher clocks, and faster memory support for $110 less.
Overview
Launch
2024
Status
ActiveGeneration
1st Gen Core Ultra (Arrow Lake)
Market
Desktop
The Intel Core Ultra 5 245KF is a 14-core unlocked desktop processor based on the Arrow Lake-S architecture, featuring 6 P-Cores and 8 E-Cores with a 5.2 GHz boost clock and no integrated graphics.
The Core Ultra 5 245KF was Intel's entry-level unlocked Arrow Lake-S processor at launch, offering 6 Lion Cove P-Cores and 8 Skymont E-Cores with a 5.2 GHz boost, 24MB L3 cache, DDR5-6400 support, and an unlocked multiplier. At its $294 launch price, it competed with the Ryzen 5 9600X.
However, the subsequent launch of the 250KF Plus at $184 with more cores and faster memory has significantly undermined its value.
Specifications
Performance
14 cores provide good multi-threaded performance, though the 8 E-Cores are outpaced by the 250KF Plus's 12 E-Cores in heavily parallel workloads.
Strong 1080p and 1440p gaming performance with the 5.2 GHz boost. Pairs well with GPUs up to RTX 4070 class without significant bottlenecks.
Better idle and light-load efficiency than 13th/14th Gen due to the 3nm compute tile, but 125W/159W power limits are substantial.
- •5.2 GHz boost provides strong single-thread performance for gaming
- •14 threads handle modern game engines well with background tasks
- •No iGPU means discrete GPU is mandatory
- •Slightly behind the 250KF Plus due to lower boost and fewer cores
- •13 TOPS NPU 3 for lightweight AI tasks
- •22 TOPS total without iGPU contribution
- •Adequate for Windows Copilot+ features and basic local inference
- •Not competitive with dedicated AI accelerators or AMD's newer NPU implementations
Architecture
3nm (TSMC)
Process Node
Arrow Lake-S
Codename
14C / 14T
Core Config
24 MB
L3 Cache
125 W
TDP
Architecture Overview
The 245KF is the base unlocked Arrow Lake-S desktop processor, using Intel's disaggregated tile architecture with TSMC-manufactured compute and graphics tiles. It launched on the B0 stepping, which was a refinement over the A0 used in some higher-end SKUs.
CPU Design
6 Lion Cove P-Cores at 4.2 GHz base / 5.2 GHz boost handle single-threaded workloads, while 8 Skymont E-Cores at 3.6 GHz base / 4.6 GHz boost provide parallel throughput. Each P-Core has 3MB of dedicated L2 cache, and each E-Core module shares 4MB of L2.
Memory Subsystem
Dual-channel DDR5 with native 6400 MT/s support. This was a step up from Raptor Lake's 5600 MT/s JEDEC standard but would be surpassed by the Plus series's 7200 MT/s.
PCIe & I/O
20 PCIe 5.0 lanes from the CPU and 4 PCIe 4.0 lanes, standard Arrow Lake-S desktop allocation.
Overclocking
Fully unlocked with independent ratio control for P-Cores and E-Cores. The B0 stepping offers reasonable overclocking headroom, though Arrow Lake's voltage characteristics differ from previous generations.
- New Lion Cove P-Core architecture with significant IPC gains
- Skymont E-Cores dramatically faster than Raptor Cove E-Cores
- TSMC 3nm compute tile replacing Intel 7
- NPU 3 for AI workloads
- DDR5-6400 native vs DDR5-4800
- PCIe 5.0 from CPU (vs PCIe 4.0 on 14600KF)
Key Highlights
- Strong 5.2 GHz single-thread performance
- Unlocked multiplier for overclocking
- New Arrow Lake architecture with improved IPC
- Good gaming performance
- NPU 3 for AI features
- Dramatically overpriced at $294 compared to the 250KF Plus at $184
- Fewer cores than the cheaper 250KF Plus
- Lower DDR5-6400 native speed vs 250KF Plus's DDR5-7200
- No integrated graphics
- No Hyper-Threading
History
The Core Ultra 5 245KF launched on October 24, 2024, as part of Intel's initial Arrow Lake-S desktop rollout. It was positioned as the entry-level unlocked chip in a lineup that also included the Ultra 7 265K and Ultra 9 285K.<br><br>At $294, the 245KF represented Intel's attempt to maintain premium pricing on its new architecture despite the chip sitting at the bottom of the K-series stack.
Reviews were mixed — the new Lion Cove and Skymont architectures showed genuine IPC improvements, but the removal of Hyper-Threading and the relatively high price made value a concern compared to AMD's Ryzen 5 9600X.<br><br>The 245KF's fate was sealed just 17 months later when Intel launched the 250KF Plus at $184 — a chip with 4 more cores, higher clocks, and faster memory support that made the 245KF one of the most rapidly devalued Intel processors in recent history. It became a cautionary tale about early adoption pricing on new platforms.
Improvements over Previous Generation
- New Lion Cove P-Core architecture with significant IPC gains
- Skymont E-Cores dramatically faster than Raptor Cove E-Cores
- TSMC 3nm compute tile replacing Intel 7
- NPU 3 for AI workloads
- DDR5-6400 native vs DDR5-4800
- PCIe 5.0 from CPU (vs PCIe 4.0 on 14600KF)
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Only if found at a significant discount (under $200) compared to its $294 MSRP.
Avoid if…
- Buying at or near MSRP when the 250KF Plus offers more for $184
- Building a new system from scratch where platform cost matters
- You want the best value in the current Intel lineup
Use Cases
Interesting Facts
The 245KF launched at $294, which was actually $25 less than the i5-14600KF's launch MSRP of $319, though the 14600KF was regularly sold below MSRP.
Its B0 stepping was actually more refined than the A0 stepping used in the higher-end Core Ultra 5 245, an unusual inversion.
The 245KF's 22 total TOPS (CPU + NPU only, no iGPU) fell short of Microsoft's Copilot+ PC requirement of 40 TOPS.
At launch, reviewers noted that the 245KF's gaming performance was competitive with the Ryzen 5 9600X but often trailed in productivity due to fewer full-performance cores.
The 245KF was the first Intel desktop processor to use TSMC's 3nm process for its compute tile, marking a historic shift away from Intel's own fabrication.
Its 8 E-Cores use the Skymont architecture, which Intel claimed delivered up to double the performance of Gracemont E-Cores at the same power level.
The 245KF lacks ECC memory support, unlike the non-K 245 which does support ECC — an unusual spec divergence within the same tier.
Arrow Lake removed the hardware Thread Director that was a key feature of 12th-14th Gen hybrid CPUs, relying on OS-level scheduling instead.
Despite having 'Ultra' in its name, the 245KF was positioned as a direct successor to the mainstream i5-14600KF, not a premium product.
The 245KF's launch was overshadowed by reports of instability in 13th and 14th Gen Intel CPUs, which may have dampened enthusiasm for the new LGA 1851 platform.
People Also Ask
Is the Core Ultra 5 245KF still worth buying in 2026?
Not at its $294 MSRP. The 250KF Plus offers 4 more cores, higher clocks, and faster memory for $184. Only consider the 245KF if you find it heavily discounted.
Why was the 245KF so expensive at launch?
Intel priced it as a direct replacement for the i5-14600KF with a new architecture. The subsequent 250KF Plus at $184 reflected Intel's need to compete more aggressively with AMD.
Does the 245KF have integrated graphics?
No, the 'F' designation means no integrated graphics. You need a discrete GPU.
How does the 245KF compare to the Ryzen 5 9600X?
Gaming performance is very similar. The 245KF has more total cores (14 vs 6) for multi-threading, but the 9600X's 6 cores are all full-performance Zen 5 cores.
Can the 245KF be overclocked?
Yes, the multiplier is fully unlocked. P-Cores and E-Cores can be tuned independently.
What stepping is the 245KF?
B0 stepping, which is a refinement over the A0 stepping used in some other Arrow Lake launch parts.
Does the 245KF support ECC memory?
No, unlike the non-K 245, the 245KF does not support ECC memory.
What cooler does the 245KF need?
A quality dual-tower air cooler or 240mm+ AIO is recommended for the 125W TDP, especially when overclocking.
Is the 245KF affected by Intel's CPU instability issues?
The 245KF uses the Arrow Lake architecture, which is different from the 13th/14th Gen Raptor Lake chips affected by the Vmin Shift Instability issue. Arrow Lake processors are not impacted by that specific problem.
What is the difference between 245KF and 245?
The 245KF has a higher 4.2 GHz base (vs 3.5 GHz), higher 5.2 GHz boost (vs 5.1 GHz), unlocked multiplier, 125W TDP (vs 65W), 159W PL2 (vs 121W), and no integrated graphics.
Frequently Asked Questions
What is the TDP of the Core Ultra 5 245KF?
125W base TDP with 159W PL1 and PL2.
What is the boost clock of the 245KF?
Up to 5.2 GHz on P-Cores and up to 4.6 GHz on E-Cores.
Does the 245KF support DDR5-6400 natively?
Yes, DDR5-6400 MT/s is the native JEDEC speed.
What is the part number for the 245KF?
SRQCY.
How many PCIe lanes does the 245KF have?
20 PCIe 5.0 lanes and 4 PCIe 4.0 lanes from the CPU.
What socket does the 245KF use?
LGA 1851.
Does the 245KF have Hyper-Threading?
No, Arrow Lake removed Hyper-Threading. It has 14 cores and 14 threads.
What is the L3 cache size?
24MB of shared L3 cache.
Is the 245KF good for video editing?
It handles 1080p and light 4K video editing well, but for heavy 4K+ workflows, more P-Cores would be beneficial.
What chipsets support the 245KF?
Z890, B860, H810, Q870, and W880.