Intel Core Ultra 9 275HX

Name: Intel Core Ultra 9 275HX
Brand: Intel
SKU: 1050

Manufacturer: Intel

The Intel Core Ultra 9 275HX is a high-thread-count laptop processor designed for demanding mobile workloads. Built on a 3 nm semiconductor process, it uses Intel's big.LITTLE architecture to balance performance and efficiency across its core configuration, combining eight cores clocked at 2.7 GHz with sixteen cores at 2.1 GHz base speeds. It also carries an unlocked multiplier, giving system builders some additional tuning flexibility within supported platforms.

On the performance side, the chip reaches a turbo clock speed of 5.4 GHz and posts a PassMark multi-core score of 56,426, with a single-core result of 4,723. Cache resources include 40 MB of L2 and 36 MB of L3. Memory support extends to DDR5 at up to 6,400 MHz across two channels, with a maximum capacity of 192 GB. The integrated graphics unit runs at a base of 300 MHz and boosts to 1,900 MHz, supporting up to four displays with DirectX 12, OpenGL 4.5, and OpenCL 3 compatibility. The processor connects via a BGA 2114 socket and supports PCIe 5.0, with a rated thermal ceiling of 105 °C and a 55W TDP.

Pros

Reaches a turbo clock speed of 5.4 GHz, making it capable of handling demanding single-threaded tasks
big.LITTLE architecture distributes workloads across 24 threads using two distinct core configurations, offering flexibility for both light and intensive tasks
Supports up to 192 GB of DDR5 memory at 6,400 MHz, providing substantial headroom for memory-intensive workloads
40 MB of L2 cache and 36 MB of L3 cache help sustain consistent throughput across multi-threaded operations
Integrated graphics support up to four simultaneous displays with DirectX 12, OpenGL 4.5, and OpenCL 3 compatibility
PCIe 5.0 support enables high-bandwidth connectivity for modern peripheral and storage devices

Cons

ECC memory is not supported, limiting suitability for applications where memory error correction is critical
At a 55W TDP, thermal and power management demands may place constraints on certain laptop chassis designs
Integrated GPU base clock of 300 MHz is relatively modest, which may affect responsiveness in graphics tasks before the turbo frequency is engaged
BGA 2114 socket means the processor is soldered to the motherboard and cannot be replaced or upgraded independently

Who is this for?

This processor is well-suited to users who need a capable mobile workstation for sustained multi-threaded workloads such as video editing, 3D rendering, or software compilation, where its 24-thread configuration and large cache reserves provide meaningful throughput. The support for up to 192 GB of DDR5 memory makes it a strong fit for memory-intensive professional applications like large dataset processing or complex simulations. Users who also need to drive multiple displays simultaneously will find the integrated graphics unit's four-display support practical for productivity-focused setups without requiring a discrete GPU.

Who is this NOT for?

This processor is not a good fit for applications where ECC memory support is a requirement, such as certain scientific computing or server-adjacent workloads where data integrity under memory errors is critical. Its 55W TDP also makes it less appropriate for ultra-thin or fanless laptop designs where thermal headroom is tightly constrained, as chassis design must accommodate meaningful heat dissipation. Users looking for a capable integrated graphics solution for casual gaming or GPU-accelerated creative tasks may find the 300 MHz base GPU clock limiting, particularly in scenarios where sustained graphical performance is needed before boost frequencies engage.

General info:

Type	Laptop
CPU socket	BGA 2114
Has integrated graphics	✓
Thermal Design Power (TDP)	55W
semiconductor size	3 nm
CPU temperature	105 °C
PCI Express (PCIe) version	5
Supports 64-bit	✓

The Intel Core Ultra 9 275HX is a laptop CPU that connects via a BGA 2114 socket and is manufactured on a 3 nm semiconductor process, helping keep its Thermal Design Power at a rated 55W. It includes integrated graphics and fully supports 64-bit computing. The processor is rated for a maximum operating temperature of 105 °C and uses PCIe 5.0 for high-bandwidth peripheral connectivity.

Performance:

CPU speed	8 x 2.7 & 16 x 2.1 GHz
CPU threads	24 threads
turbo clock speed	5.4GHz
Has an unlocked multiplier	✓
L2 cache	40 MB
L3 cache	36 MB
Uses big.LITTLE technology	✓
clock multiplier	27
Turbo Boost version	2

The processor uses big.LITTLE technology to distribute work across two core groups — eight cores running at 2.7 GHz and sixteen cores at 2.1 GHz — for a total of 24 threads. With Turbo Boost 2, it can reach a peak clock speed of 5.4 GHz, and an unlocked multiplier with a clock multiplier value of 27 provides additional tuning headroom. Cache resources are substantial, with 40 MB of L2 cache and 36 MB of L3 cache available to help sustain throughput across multi-threaded workloads.

Benchmarks:

PassMark result	56426
PassMark result (single)	4723

In PassMark testing, the processor achieves a multi-core score of 56,426, reflecting its capacity to handle parallelized workloads across its full thread count. Its single-core PassMark result of 4,723 indicates the level of performance available for tasks that rely primarily on single-threaded execution.

Integrated graphics:

GPU clock speed	300 MHz
GPU turbo	1900 MHz
DirectX version	DirectX 12
supported displays	4
OpenGL version	4.5
OpenCL version	3

The integrated graphics unit has a base clock of 300 MHz and can boost up to 1,900 MHz, with support for up to four displays simultaneously. It is compatible with DirectX 12, OpenGL 4.5, and OpenCL 3, covering a practical range of graphics APIs for both general rendering tasks and compute workloads.

Memory:

RAM speed (max)	6400 MHz
DDR memory version	5
memory channels	2
maximum memory amount	192GB
Supports ECC memory	✕

The processor supports DDR5 memory at speeds of up to 6,400 MHz across two channels, with a maximum addressable capacity of 192 GB. ECC memory is not supported, which is a relevant consideration for workloads where memory error correction is a requirement.

Features:

instruction sets	MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
Has NX bit	✓

The processor supports a broad set of instruction sets, including AVX2, FMA3, and AES, alongside MMX, F16C, SSE 4.1, and SSE 4.2, covering vectorized math, hardware-accelerated encryption, and a range of legacy and modern compute extensions. It also includes NX bit support, which enables hardware-level memory protection to help guard against certain classes of malicious code execution.

Final Verdict

The Intel Core Ultra 9 275HX positions itself as a capable mobile processor built around a demanding professional workload profile. Its combination of a 24-thread big.LITTLE core layout, a 5.4 GHz turbo ceiling, and up to 192 GB of DDR5 memory support makes it a well-rounded option for users who need sustained multi-threaded throughput in a laptop form factor. While its 55W thermal profile and lack of ECC memory support do place some constraints on where it fits comfortably, these are deliberate trade-offs that reflect its intended use case. For professionals working across compute-heavy applications who require both processing depth and broad memory capacity in a mobile platform, the Core Ultra 9 275HX represents a technically well-specified choice.