Quick Verdict
Offers 95% of the flagship's performance for a better value, maintaining the massive 24-core layout and unlocked overclocking.
Overview
Launch
2025
Status
ActiveGeneration
Ultra 9 (Arrow Lake-HX)
Market
Mobile
The Intel Core Ultra 9 275HX is a high-performance mobile processor designed for enthusiast gaming laptops and portable workstations, offering a slightly more accessible entry point into the Arrow Lake-HX family. Built on TSMC’s advanced 3nm process, this processor features a robust 24-core hybrid architecture, combining 8 'Lion Cove' P-cores and 16 'Skymont' E-cores to deliver immense multi-threaded capabilities. While it shares the same core count as its 285HX sibling, the 275HX features slightly reduced clock speeds, with a base frequency of 2.7 GHz and a maximum turbo of 5.4 GHz. This minor reduction makes it highly attractive for system integrators looking to balance extreme performance with slightly more manageable thermal outputs. The chip operates at a 55W base TDP, scaling up to 160W during peak loads, and features an unlocked multiplier for enthusiasts. It comes equipped with 36MB of L3 cache and supports dual-channel DDR5-6400 memory. The inclusion of 20 PCIe Gen 5 lanes ensures ample bandwidth for top-tier discrete GPUs and high-speed NVMe arrays. Paired with Arc Xe-LPG Graphics (64EU) for basic display outputs, the 275HX is a versatile powerhouse that brings desktop-class multitasking and rendering capabilities to mobile platforms, making it a smart choice for high-end gaming and creator laptops.
Intel's Core Ultra 9 275HX delivers near-flagship performance for desktop replacement laptops. Built on TSMC's 3nm process, it features 8 P-cores and 16 E-cores, reaching up to 5.4 GHz.
With an unlocked multiplier, 36MB of L3 cache, and 20 PCIe Gen 5 lanes, it handles extreme workloads effortlessly. It's an excellent choice for enthusiasts who want 24-core performance without paying the premium for the absolute highest clock speeds.
Specifications
Performance
Handles heavily threaded tasks with ease, losing only 1-2% to the 285HX.
Strong performance for local VMs, limited slightly by dual-channel memory.
Performs identically to the flagship in GPU-bound scenarios.
Power-hungry under load, requiring robust laptop cooling.
- •5.4 GHz turbo is plenty for high-refresh-rate gaming
- •Won't bottleneck high-end mobile GPUs
- •Overclockable to match higher-tier SKUs
- •13 TOPS NPU included
- •Total Int8 TOPS up to 36
- •Relies heavily on CPU/dGPU for heavy AI
Architecture
3 nm
Process Node
Arrow Lake-HX
Codename
24C / 24T
Core Config
36 MB
L3 Cache
55 W
TDP
Architecture Overview
The architecture of the Core Ultra 9 275HX is identical to the 285HX, utilizing a monolithic 243mm² die built on TSMC's N3 process. The 'Lion Cove' P-cores are designed to maximize Instruction Per Clock (IPC) throughput, crucial for gaming and single-threaded applications, while the 16 'Skymont' E-cores handle parallel workloads with remarkable efficiency. This 8+16 configuration allows the processor to manage everything from background downloads to complex 3D rendering seamlessly. A key architectural feature is the massive 36MB L3 cache, which reduces latency by keeping frequently accessed data close to the cores. The memory controller supports DDR5-6400, providing 102.4 GB/s of bandwidth, ensuring the cores are never starved for data. Unlike Intel's lower-wattage mobile chips, the HX architecture foregoes LPDDR support in favor of traditional DDR5 to prioritize bandwidth and capacity. The 20 PCIe Gen 5 lanes offer immense I/O flexibility, allowing direct connections for multiple high-speed devices. While it includes a 13 TOPS NPU for background AI tasks, the architecture’s primary focus remains on raw compute power and low-latency communication, making it a purpose-built silicon for heavy-duty mobile workstations.
CPU Design
Hybrid 8 P-Cores (Lion Cove) + 16 E-Cores (Skymont).
Memory Subsystem
Dual-channel DDR5-6400.
PCIe & I/O
20 lanes of PCIe Gen 5 directly from the CPU.
Overclocking
Fully unlocked multiplier.
- Transition to 3nm TSMC node
- Massive increase in E-core count (16 vs 8)
- Introduction of Lion Cove and Skymont architectures
- Addition of integrated NPU
Key Highlights
- Excellent value for 24-core performance
- Unlocked multiplier allows matching flagship clocks
- 20 PCIe Gen 5 lanes for maximum expandability
- 36MB L3 cache keeps cores fed
- ECC memory support
- High power consumption (160W turbo)
- Requires heavy, thick laptop chassis for cooling
- Poor battery life efficiency
- Weak integrated graphics relative to CPU power
History
The Core Ultra 9 275HX launched in January 2025 as a core part of Intel's Arrow Lake-HX rollout, designed to offer a slightly more cost-effective alternative to the flagship 285HX. Historically, Intel has always offered slightly detuned flagship chips to capture a broader market segment without significantly altering the silicon. The 275HX fits this mold perfectly, utilizing the exact same 243mm² die but with a modest 100MHz reduction in max turbo frequency.
This release was strategically timed to provide laptop manufacturers with options for different price tiers within the extreme gaming laptop category. The Arrow Lake-HX series itself was a crucial release for Intel, marking their transition to TSMC's 3nm node for high-end mobile silicon to ensure competitiveness with AMD's Ryzen 8000 HX series. The 275HX played a vital role in securing design wins in mid-to-high-tier DTR laptops, offering excellent value for users who needed 24 cores but didn't want to pay the premium for the absolute top-end clocks.
It stands as a testament to Intel's strategy of maximizing silicon yield and catering to nuanced market demands.
Improvements over Previous Generation
- Transition to 3nm TSMC node
- Massive increase in E-core count (16 vs 8)
- Introduction of Lion Cove and Skymont architectures
- Addition of integrated NPU
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
The Core Ultra 9 275HX is highly recommended for gamers and creators seeking near-flagship performance without paying the absolute premium for the highest-tier chips. If you are looking at a high-end gaming laptop and the 275HX option is significantly cheaper than the 285HX, it is often the smarter buy, as the 100MHz difference is negligible in real-world scenarios. It retains the unlocked multiplier, 24 cores, and 20 PCIe Gen 5 lanes, making it highly future-proof. However, like all HX chips, it requires a substantial cooling solution to manage its 160W turbo power, so prioritize laptops with robust thermal designs. Avoid this processor if you need a laptop for casual use or long battery life, as it is inefficient for light workloads. Pair it with a high-end GPU to get the most out of your investment.
Avoid if…
- You need long battery life
- You want a thin-and-light laptop
- Your workload doesn't utilize 24 cores
Use Cases
Interesting Facts
It shares the exact same 243mm² die as the 285HX.
The max turbo is only 100MHz slower than the flagship 285HX.
It packs 17.8 billion transistors.
Supports Intel vPro Enterprise for business deployments.
The integrated Arc graphics operate between 300 and 1900 MHz.
Total platform AI TOPS is 36.
Uses the BGA 2114 socket.
Features 'Lion Cove' P-cores and 'Skymont' E-cores.
Does not support LPDDR5 memory.
Compatible with WM880 and HM870 chipsets.
People Also Ask
Is the Intel Core Ultra 9 275HX unlocked for overclocking?
Yes, it features an unlocked multiplier, allowing enthusiasts to manually tune clock speeds.
What is the difference between 275HX and 285HX?
The 275HX has a slightly lower max turbo (5.4 GHz vs 5.5 GHz) and lower iGPU max dynamic frequency (1900 MHz vs 2000 MHz).
How many cores does the Core Ultra 9 275HX have?
It features 24 total cores: 8 Performance cores and 16 Efficient cores.
Does the 275HX support ECC memory?
No, unlike the 285HX, the 275HX does not support Error Correcting Code (ECC) memory.
Is the Core Ultra 9 275HX good for battery life?
No, it is a desktop replacement chip with high power consumption, requiring constant AC power for heavy use.
What socket does the 275HX use?
It uses the Intel BGA 2114 socket, which is soldered to the motherboard.
What is the max turbo power of the 275HX?
The processor can draw up to 160W (PL2) during maximum turbo boost.
Does the 275HX have an NPU?
Yes, it includes an NPU capable of 13 TOPS for AI tasks.
What is the base clock speed of the 275HX?
The base clock speed is 2.7 GHz.
How much L3 cache does the 275HX have?
It features 36MB of shared L3 cache.
Frequently Asked Questions
What generation is the Core Ultra 9 275HX?
It belongs to the Intel Core Ultra 9 (Arrow Lake-HX) generation.
What are the P-cores and E-cores in the 275HX?
It utilizes 'Lion Cove' P-Cores and 'Skymont' E-Cores.
How many PCIe Gen 5 lanes are available on the 275HX?
The CPU provides 20 PCIe Gen 5 lanes for high-speed devices.
Does the 275HX support LPDDR5 memory?
No, it only supports standard dual-channel DDR5 memory up to 6400 MT/s.
When was the Core Ultra 9 275HX released?
It was released on January 13th, 2025.
What integrated graphics does the 275HX have?
It includes Intel Arc Xe-LPG Graphics with 64 Execution Units.
What process node is the 275HX built on?
It is manufactured by TSMC on their 3nm process node.
What is the die size of the 275HX?
The monolithic die measures 243 mm².
What chipsets support the 275HX?
It is compatible with Intel WM880 and HM870 chipsets.
What is the total AI TOPS of the 275HX platform?
The combined Int8 TOPS is up to 36, shared across CPU, GPU, and NPU.