TurboVS
AMD Ryzen AI 7 350
Intel Core Ultra 7 255HX

AMD Ryzen AI 7 350 Intel Core Ultra 7 255HX

Overview

Welcome to our in-depth spec comparison between the AMD Ryzen AI 7 350 and the Intel Core Ultra 7 255HX — two modern mobile processors aimed at power users with very different priorities. In this head-to-head, we examine their approaches to multi-core performance, integrated graphics capability, memory support, and thermal design to help you determine which chip best suits your needs.

Common Features

  • ✓ Both processors include integrated graphics.
  • ✓ Both processors support 64-bit computing.
  • ✓ Both processors use big.LITTLE technology for hybrid core architecture.
  • ✓ Both processors support DDR5 memory.
  • ✓ Both processors have a dual-channel memory configuration.
  • ✓ Neither processor supports ECC memory.
  • ✓ Both processors support up to 4 displays via integrated graphics.
  • ✓ Both processors have integrated graphics with DirectX 12 support.
  • ✓ Both processors share the same instruction sets: MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2.
  • ✓ Both processors have the NX bit security feature enabled.

Main Differences

  • • The AMD Ryzen AI 7 350 is available for both laptop and desktop platforms, while the Intel Core Ultra 7 255HX is designed for laptops only.
  • • Thermal Design Power (TDP) is 28W on the AMD Ryzen AI 7 350 and 55W on the Intel Core Ultra 7 255HX.
  • • The semiconductor size is 4 nm on the AMD Ryzen AI 7 350 and 3 nm on the Intel Core Ultra 7 255HX.
  • • Maximum CPU temperature is 100°C on the AMD Ryzen AI 7 350 and 105°C on the Intel Core Ultra 7 255HX.
  • • PCIe version is 4 on the AMD Ryzen AI 7 350 and 5 on the Intel Core Ultra 7 255HX.
  • • CPU speed is 4 x 2 GHz and 4 x 2 GHz on the AMD Ryzen AI 7 350, and 8 x 2.4 GHz and 12 x 1.8 GHz on the Intel Core Ultra 7 255HX.
  • • CPU threads total 16 on the AMD Ryzen AI 7 350 and 20 on the Intel Core Ultra 7 255HX.
  • • Turbo clock speed reaches 5 GHz on the AMD Ryzen AI 7 350 and 5.2 GHz on the Intel Core Ultra 7 255HX.
  • • An unlocked multiplier is available on the Intel Core Ultra 7 255HX but not on the AMD Ryzen AI 7 350.
  • • L2 cache is 8 MB on the AMD Ryzen AI 7 350 and 36 MB on the Intel Core Ultra 7 255HX.
  • • The clock multiplier is 20 on the AMD Ryzen AI 7 350 and 24 on the Intel Core Ultra 7 255HX.
  • • PassMark multi-core result is 34,459 on the AMD Ryzen AI 7 350 and 50,739 on the Intel Core Ultra 7 255HX.
  • • PassMark single-core result is 3,878 on the AMD Ryzen AI 7 350 and 4,645 on the Intel Core Ultra 7 255HX.
  • • PassMark overclocked result is 24,477 on the AMD Ryzen AI 7 350 and 53,565 on the Intel Core Ultra 7 255HX.
  • • Integrated GPU base clock speed is 400 MHz on the AMD Ryzen AI 7 350 and 300 MHz on the Intel Core Ultra 7 255HX.
  • • Integrated GPU turbo clock speed is 3000 MHz on the AMD Ryzen AI 7 350 and 1850 MHz on the Intel Core Ultra 7 255HX.
  • • OpenGL version supported is 4.6 on the AMD Ryzen AI 7 350 and 4.5 on the Intel Core Ultra 7 255HX.
  • • OpenCL version supported is 2.1 on the AMD Ryzen AI 7 350 and 3 on the Intel Core Ultra 7 255HX.
  • • Maximum RAM speed is 8000 MHz on the AMD Ryzen AI 7 350 and 6400 MHz on the Intel Core Ultra 7 255HX.
  • • Maximum memory capacity is 256 GB on the AMD Ryzen AI 7 350 and 192 GB on the Intel Core Ultra 7 255HX.
Specs Comparison
AMD Ryzen AI 7 350

AMD Ryzen AI 7 350

Intel Core Ultra 7 255HX

Intel Core Ultra 7 255HX

General info:
Type Laptop, Desktop Laptop
Has integrated graphics ✓ ✓
release date January 2025 January 2025
Thermal Design Power (TDP) 28W 55W
semiconductor size 4 nm 3 nm
CPU temperature 100 °C 105 °C
PCI Express (PCIe) version 4 5
Supports 64-bit ✓ ✓

At a foundational level, both the AMD Ryzen AI 7 350 and the Intel Core Ultra 7 255HX share the essentials: integrated graphics, full 64-bit support, and a modern process node. However, their design philosophies diverge sharply when you look at power and platform positioning. The Ryzen AI 7 350 is built around a 28W TDP on a 4nm node, while the Core Ultra 7 255HX runs at a much higher 55W TDP on a 3nm process. In practical terms, the Intel chip is engineered for sustained, high-performance workloads in thicker laptops with robust cooling — it simply draws nearly twice the power. The AMD chip, by contrast, is tuned for efficiency, making it a far more viable candidate for slim, fanless, or battery-sensitive designs.

The PCIe version gap is also meaningful: the 255HX supports PCIe 5.0, while the Ryzen AI 7 350 tops out at PCIe 4.0. For users pairing the processor with a cutting-edge NVMe SSD or a discrete GPU over PCIe, Intel's newer bus doubles the theoretical bandwidth ceiling — a tangible advantage in storage-intensive or GPU-bound workflows. The Intel chip also reaches a slightly higher maximum CPU temperature (105°C vs. 100°C), which is consistent with its higher-power, performance-first thermal envelope.

One noteworthy exclusive to the Ryzen AI 7 350 is its desktop compatibility — unlike the 255HX, which is laptop-only, AMD's chip can be deployed in both laptop and desktop form factors, offering broader platform flexibility. Overall, for raw, unconstrained performance and I/O headroom the Intel Core Ultra 7 255HX holds a clear edge; but for efficiency, versatility across form factors, and power-conscious designs, the Ryzen AI 7 350 is the stronger fit.

Performance:
CPU speed 4 x 2 & 4 x 2 GHz 8 x 2.4 & 12 x 1.8 GHz
CPU threads 16 threads 20 threads
turbo clock speed 5GHz 5.2GHz
Has an unlocked multiplier ✕ ✓
L2 cache 8 MB 36 MB
Uses big.LITTLE technology ✓ ✓
clock multiplier 20 24

The AMD Ryzen AI 7 350 and Intel Core Ultra 7 255HX differ in several performance aspects, particularly in their CPU configurations. The Ryzen AI 7 350 features 4 cores running at 2 GHz and another 4 cores at 2 GHz, totaling 16 threads. In contrast, the Intel Core Ultra 7 255HX has 8 cores running at 2.4 GHz and 12 cores at 1.8 GHz, amounting to 20 threads. Both processors use big.LITTLE technology, which allows for efficiency and performance cores, but the Intel processor has more cores overall.

Both processors have similar turbo clock speeds, with the AMD Ryzen AI 7 350 reaching up to 5 GHz, while the Intel Core Ultra 7 255HX can go slightly higher, peaking at 5.2 GHz. Both processors have an L2 cache, but the Intel Core Ultra 7 255HX offers a larger cache of 36 MB, compared to the 8 MB of the AMD Ryzen AI 7 350.

Another key difference is that the AMD Ryzen AI 7 350 has a locked multiplier, meaning users cannot easily overclock the CPU, while the Intel Core Ultra 7 255HX has an unlocked multiplier, providing more flexibility for overclocking. Additionally, the Ryzen AI 7 350 operates with a clock multiplier of 20, while the Intel processor uses a higher clock multiplier of 24, which may contribute to more performance headroom in overclocked scenarios.

Benchmarks:
PassMark result 34459 50739
PassMark result (single) 3878 4645
PassMark result (overclocked) 24477 53565

The AMD Ryzen AI 7 350 and Intel Core Ultra 7 255HX show significant differences in benchmark performance across multiple tests. The AMD Ryzen AI 7 350 has a total PassMark score of 34,459, with a single-threaded PassMark score of 3,878. In comparison, the Intel Core Ultra 7 255HX achieves a much higher total PassMark score of 50,739 and a single-threaded score of 4,645, indicating that the Intel processor outperforms the AMD chip in both overall and single-threaded workloads.

When it comes to overclocking, the Intel Core Ultra 7 255HX also leads, reaching a PassMark score of 53,565 when overclocked, which is a significant jump from its base score. The AMD Ryzen AI 7 350, on the other hand, has a PassMark result of 24,477 when overclocked, showing a smaller gain compared to its base performance.

In summary, the Intel Core Ultra 7 255HX outperforms the AMD Ryzen AI 7 350 in all benchmarks, both in stock and overclocked states, with notable advantages in overall performance and single-threaded processing.

Integrated graphics:
GPU clock speed 400 MHz 300 MHz
GPU turbo 3000 MHz 1850 MHz
DirectX version DirectX 12 DirectX 12
supported displays 4 4
OpenGL version 4.6 4.5
OpenCL version 2.1 3

The integrated graphics of the AMD Ryzen AI 7 350 and Intel Core Ultra 7 255HX differ in several key aspects. The AMD Ryzen AI 7 350 features a GPU clock speed of 400 MHz, with a turbo boost up to 3,000 MHz. In comparison, the Intel Core Ultra 7 255HX has a slightly lower GPU clock speed of 300 MHz and a turbo boost of 1,850 MHz, indicating that the AMD chip can achieve higher GPU clock speeds overall.

Both processors support DirectX 12, allowing compatibility with modern graphics and gaming applications. However, the AMD Ryzen AI 7 350 supports OpenGL version 4.6, while the Intel Core Ultra 7 255HX supports OpenGL version 4.5, giving the Ryzen AI 7 350 a slight edge in terms of OpenGL version support.

Regarding display outputs, both processors support up to 4 displays, providing ample multi-display options for both chips. Additionally, the AMD Ryzen AI 7 350 supports OpenCL version 2.1, while the Intel Core Ultra 7 255HX supports the newer OpenCL version 3, allowing for potentially better performance in compute tasks that rely on OpenCL.

Memory:
RAM speed (max) 8000 MHz 6400 MHz
DDR memory version 5 5
memory channels 2 2
maximum memory amount 256GB 192GB
Supports ECC memory ✕ ✕

The memory specifications of the AMD Ryzen AI 7 350 and Intel Core Ultra 7 255HX show a few notable differences. The AMD Ryzen AI 7 350 supports a maximum RAM speed of 8,000 MHz, while the Intel Core Ultra 7 255HX has a slightly lower maximum RAM speed of 6,400 MHz. Both processors support DDR5 memory and utilize two memory channels, allowing for dual-channel memory configurations.

In terms of maximum memory capacity, the AMD Ryzen AI 7 350 can support up to 256 GB of RAM, whereas the Intel Core Ultra 7 255HX is limited to 192 GB of RAM. Both processors do not support ECC (Error-Correcting Code) memory, which is typically used for more reliable, error-free memory in workstations or servers.

While both processors offer high-performance memory capabilities, the AMD Ryzen AI 7 350 stands out with a higher maximum RAM speed and greater overall memory capacity.

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

The AMD Ryzen AI 7 350 and Intel Core Ultra 7 255HX are identical in terms of supported instruction sets and security features. Both processors support a range of instruction sets including MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2, allowing for enhanced performance in various computing tasks. Additionally, both processors have the NX bit enabled, providing support for the No-Execute (NX) bit, which helps protect against certain types of malicious attacks.

Since both processors share the same instruction sets and security features, there is no difference between the two in this category.

Comparison Summary & Verdict

After reviewing every specification, these two processors serve meaningfully different audiences. The AMD Ryzen AI 7 350 stands out with its lower 28W TDP, higher integrated GPU turbo clock of 3000 MHz, faster maximum RAM speed of 8000 MHz, and a larger 256 GB memory ceiling — making it an excellent choice for users who value efficiency and graphics headroom within a power-conscious envelope. The Intel Core Ultra 7 255HX, on the other hand, dominates in raw compute power, boasting a significantly higher PassMark multi-core score of 50,739, a massive 36 MB L2 cache, an unlocked multiplier for overclocking, and superior PCIe 5 support — ideal for workstation-class workloads where peak throughput is the top priority.

AMD Ryzen AI 7 350
Buy AMD Ryzen AI 7 350 if...

Choose the AMD Ryzen AI 7 350 if you need a power-efficient processor with a low 28W TDP, faster integrated GPU performance, and support for higher RAM speeds up to 8000 MHz.

Intel Core Ultra 7 255HX
Buy Intel Core Ultra 7 255HX if...

Choose the Intel Core Ultra 7 255HX if you demand maximum multi-core performance, a large 36 MB L2 cache, overclocking flexibility via an unlocked multiplier, and cutting-edge PCIe 5 connectivity.