AMD Ryzen AI Max Pro 390 VS Intel Core Ultra 7 255U

The most telling difference in this group is Thermal Design Power: the Ryzen AI Max Pro 390 operates at 55W while the Core Ultra 7 255U is rated at just 15W. TDP is a proxy for both sustained performance ceiling and heat output — a higher TDP means the processor can maintain heavier workloads for longer, but demands more robust cooling and draws significantly more power. The 255U's ultra-low 15W envelope is purpose-built for thin-and-light laptops where battery life and passive or near-passive cooling matter most, whereas the 390 targets configurations where sustained compute throughput is the priority over efficiency.

On manufacturing process, the 255U has a slight edge with a 3 nm node versus the 390's 4 nm. A smaller node generally yields better transistor density and energy efficiency at equivalent performance levels — which partly explains how Intel keeps its TDP so low. That said, process node alone does not determine real-world performance; architecture and TDP headroom are equally critical factors. Both chips share PCIe 4 support and integrated graphics, placing them on equal footing for connectivity and display output fundamentals.

The AMD Ryzen AI Max Pro 390 also supports Desktop deployment in addition to laptops, giving it broader platform versatility. Overall, these are processors designed for fundamentally different use cases: the 255U holds a clear efficiency advantage for portable, battery-sensitive scenarios, while the 390's higher TDP gives it a raw performance headroom advantage for demanding workloads in plugged-in or desktop contexts.

The AMD Ryzen AI Max Pro 390 and Intel Core Ultra 7 255U exhibit differences in CPU speed and architecture. The Ryzen processor has a base CPU speed of 12 cores running at 3.2 GHz, while the Intel processor uses a hybrid configuration with 2 cores at 2 GHz and 8 cores at 1.7 GHz, offering a combined architecture. This difference highlights the distinct approaches each processor takes to balance performance and power efficiency.

In terms of threads, the Ryzen AI Max Pro 390 offers 24 threads, more than the Intel Core Ultra 7 255U, which has 14 threads. This difference may suggest that the Ryzen processor could handle more parallel tasks or demanding workloads simultaneously. Both processors are capable of turbo clock speeds of 5 GHz, with the Intel processor achieving a slightly higher turbo speed of 5.2 GHz.

Neither processor features an unlocked multiplier, limiting overclocking potential. The Ryzen model does not use big.LITTLE technology, while the Intel processor does. This means the Intel chip can dynamically adjust between high-performance and low-power cores based on workload, which could provide more power efficiency in certain scenarios. Lastly, the Ryzen has a clock multiplier of 32, while the Intel processor has a multiplier of 20, which may reflect differences in their overall architecture and design choices.

The AMD Ryzen AI Max Pro 390 and Intel Core Ultra 7 255U show a noticeable difference in their PassMark benchmark results. The Ryzen processor achieves a total PassMark score of 43189, which is significantly higher than the Intel Core Ultra 7 255U’s score of 18555. This indicates that, based on these benchmarks, the AMD processor may offer superior overall performance.

Looking at the single-threaded performance, the Ryzen AI Max Pro 390 also leads with a single-core PassMark result of 3997, compared to the Intel processor’s 3732. While both processors show strong single-core performance, the Ryzen has a clear advantage in this regard as well.

In summary, based on the provided benchmark results, the AMD Ryzen AI Max Pro 390 demonstrates a stronger performance in both overall and single-threaded tests compared to the Intel Core Ultra 7 255U.

The AMD Ryzen AI Max Pro 390 and Intel Core Ultra 7 255U both come with integrated graphics, but there are some key differences in their specifications. The Ryzen processor has a GPU turbo speed of 2800 MHz, while the Intel processor's GPU turbo speed is slightly lower at 2100 MHz.

Both processors support DirectX 12, but the Intel Core Ultra 7 255U supports DirectX 12 Ultimate, which is a more advanced version offering additional features like hardware-accelerated ray tracing. Both models support up to 4 displays, so there's no difference in that regard. Additionally, both processors share the same OpenGL version (4.6) and OpenCL version (3), meaning they offer similar capabilities for those APIs.

Overall, the main differences between the two are in the GPU turbo speed and the DirectX version, with the Intel processor having the advantage in DirectX support, while the Ryzen offers a higher GPU turbo speed.

The AMD Ryzen AI Max Pro 390 and Intel Core Ultra 7 255U both support DDR5 memory, but there are some differences in their memory specifications. The Ryzen processor supports a maximum RAM speed of 8000 MHz, while the Intel processor can handle a slightly faster maximum RAM speed of 8400 MHz.

When it comes to memory channels, the Ryzen supports 4 memory channels, which could provide better memory bandwidth for certain tasks, whereas the Intel processor supports only 2 memory channels. However, both processors support a maximum memory amount of 128GB, ensuring similar capacity for high-memory demands.

One significant difference is that the AMD Ryzen AI Max Pro 390 supports ECC memory (Error-Correcting Code), which helps detect and correct memory errors, offering enhanced reliability. The Intel Core Ultra 7 255U does not support ECC memory, which could be a consideration in environments where data integrity is critical.

The AMD Ryzen AI Max Pro 390 and Intel Core Ultra 7 255U share many similar features when it comes to instruction sets, multithreading, and security features. Both processors support the same set of instruction sets: F16C, MMX, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2, which ensure compatibility with a wide range of software and applications.

Both processors also use multithreading, allowing them to handle multiple tasks simultaneously, improving performance in multi-threaded workloads. Additionally, both models have the NX bit, a security feature that helps protect against certain types of attacks.

The only slight difference between the two products is that the Ryzen AI Max Pro 390 includes one extra instruction set, MMX, compared to the Intel Core Ultra 7 255U, which could offer specific benefits for legacy applications relying on that technology.