Quick Verdict
The 245HX brings desktop-class features like an unlocked multiplier and vast PCIe connectivity to the mobile space, making it a powerhouse for thick-and-heavy enthusiast laptops.
Overview
Launch
2025
Status
ActiveGeneration
Ultra 5 (Arrow Lake-HX)
Market
Mobile
The Intel Core Ultra 5 245HX is a high-performance mobile processor featuring 14 cores, an unlocked multiplier, and 20 direct PCIe Gen 5 lanes, designed for enthusiast laptops.
Built on TSMC's 3nm process, the 245HX features 6 Lion Cove P-Cores and 8 Skymont E-Cores. With a 55W base power and 160W max turbo, it supports manual overclocking and offers 20 CPU-direct PCIe Gen 5 lanes.
Specifications
Performance
14 strong cores handle multi-threaded creator workloads efficiently.
Solid performance for local VMs, aided by 20 PCIe lanes for fast storage.
Paired with a discrete GPU, the high clock speeds and fast DDR5 memory provide top-tier mobile gaming.
Poor battery life when unplugged due to the high 55W base power and lack of LP-E cores.
- •High base clock prevents significant frequency drops during gaming
- •Ideal pairing for RTX 4080/4090 mobile GPUs
- •Unlocked multiplier can squeeze out extra FPS
- •Only 13 TOPS NPU, falling short of Copilot+ requirements
- •Relies on discrete GPU for serious AI workloads
- •CPU-based AI inference is capable but slow
Architecture
3 nm
Process Node
Arrow Lake-HX
Codename
14C / 14T
Core Config
24 MB
L3 Cache
55 W
TDP
Architecture Overview
Arrow Lake-HX is a power-optimized derivative of the desktop Arrow Lake silicon, lacking low-power mobile tiles.
CPU Design
6 Lion Cove P-Cores and 8 Skymont E-Cores, completely omitting LP-E cores.
Memory Subsystem
Dual-channel DDR5-6400, prioritizing capacity and stability over LPDDR5X speed.
PCIe & I/O
20 direct PCIe Gen 5 lanes from the CPU, plus 4 Gen 4 lanes from the PCH.
Overclocking
Fully unlocked multiplier, designed for overclocking-friendly laptop chassis.
- Transition to 3nm manufacturing process
- New Lion Cove and Skymont core architectures
- Addition of an NPU (though weak at 13 TOPS)
- Introduction of PCIe Gen 5 support
Key Highlights
- Unlocked for enthusiast overclocking
- Massive 20 PCIe Gen 5 lanes
- High 3.1 GHz base clock
- Strong single-core performance
- 24MB of L3 cache
- High power draw limits battery life
- Requires bulky laptop cooling solutions
- Weak 13 TOPS NPU
- Xe-LPG iGPU is outdated for gaming
- No Hyper-Threading
History
The Core Ultra 5 245HX represents Intel's continuation of the HX (High eXtreme) lineage, which functions essentially as a repackaged desktop silicon for laptops. Introduced alongside the more efficient Arrow Lake-H chips, the 245HX ignored the mobile-focused AI trends to cater strictly to the high-end gaming and workstation crowd. <br>By retaining the BGA 2114 socket and introducing an unlocked multiplier, Intel provided OEMs with a chip that could be marketed as a true desktop replacement, capable of pushing 160W through a laptop motherboard when paired with flagship discrete GPUs.
Improvements over Previous Generation
- Transition to 3nm manufacturing process
- New Lion Cove and Skymont core architectures
- Addition of an NPU (though weak at 13 TOPS)
- Introduction of PCIe Gen 5 support
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Enthusiasts buying a thick gaming laptop who want to manually overclock.
Avoid if…
- You need long battery life
- You want to run local AI models without a dGPU
- You prefer thin-and-light form factors
Use Cases
Interesting Facts
One of the very few mobile processors to feature a fully unlocked multiplier.
Uses the exact same BGA 2114 socket as the previous generation Meteor Lake-HX.
Relies almost entirely on a discrete GPU, as the integrated Xe-LPG graphics are basic.
Despite being 'Ultra', its NPU is too weak to qualify as a Microsoft Copilot+ PC.
People Also Ask
Can you overclock the Intel Core Ultra 5 245HX?
Yes, it features a fully unlocked multiplier for enthusiast overclocking.
How many PCIe lanes does the 245HX have?
It has 20 CPU-direct PCIe Gen 5 lanes and 4 additional Gen 4 lanes.
Is the Core Ultra 5 245HX a Copilot+ PC processor?
No, its 13 TOPS NPU falls short of the 40 TOPS requirement.
What is the max power draw of the 245HX?
The max turbo power (PL2) is 160W.
Does the 245HX support LPDDR5X memory?
No, the HX series only supports standard DDR5-6400 memory.
What socket does the 245HX use?
It uses the Intel BGA 2114 socket.
How many cores does the 245HX have?
It has 14 cores: 6 P-Cores and 8 E-Cores.
What is the boost clock of the Intel 245HX?
The maximum turbo frequency is 5.1 GHz.
Is the 245HX good for gaming?
Excellent, especially when paired with a high-end discrete GPU in a gaming laptop.
Does the 245HX have integrated graphics?
Yes, it has basic Arc Xe-LPG 48EU graphics, but it is not meant for gaming.
Frequently Asked Questions
What is the difference between Arrow Lake-H and Arrow Lake-HX?
HX chips lack low-power E-cores, feature higher base power (55W vs 28W), have more PCIe lanes, and support unlocked multipliers.
Can the 245HX run Windows Studio Effects?
It can, but it may rely more on the CPU or discrete GPU due to the weaker NPU.
What is the L3 cache size?
24 MB of shared L3 cache.
Does it support vPro?
Yes, Intel vPro is supported.
When was the 245HX released?
January 13th, 2025.
What are the P-Cores called in the 245HX?
Lion Cove.
What are the E-Cores called in the 245HX?
Skymont.
Does it support ECC memory?
No.
What chipsets work with the 245HX?
WM880 and HM870 chipsets.
Is 160W safe for a laptop?
Yes, but only in thick chassis laptops with robust vapor chamber cooling.