AMD Ryzen 9 9955HX VS AMD Ryzen AI Max Plus 395

At the foundational level, the AMD Ryzen 9 9955HX and the AMD Ryzen AI Max Plus 395 are remarkably similar chips on paper. Both are built on a 4 nm process node, share an identical 55W TDP, top out at the same 100 °C maximum junction temperature, include integrated graphics, and support 64-bit computing. For buyers focused on thermals, power envelope, or platform flexibility, these two processors are essentially interchangeable at this level of analysis.

The sole differentiator in this group is the PCI Express version: the Ryzen 9 9955HX supports PCIe 5.0, while the Ryzen AI Max Plus 395 is limited to PCIe 4.0. In practical terms, PCIe 5.0 doubles the theoretical bandwidth of PCIe 4.0, which matters most when pairing the CPU with a cutting-edge Gen 5 NVMe SSD or a discrete GPU that can saturate a Gen 5 lane. For most mainstream workloads today, PCIe 4.0 remains more than adequate, but the gap will grow as next-generation storage and peripheral hardware becomes more common.

Based strictly on the specs in this group, the Ryzen 9 9955HX holds a clear, if narrow, advantage due to its newer PCIe generation. It is the more future-proof choice for users who anticipate leveraging high-bandwidth storage or peripherals. For everything else here — power, process, and platform type — the two chips are a dead heat.

The AMD Ryzen 9 9955HX and the AMD Ryzen AI Max Plus 395 share many performance-related specifications. Both processors feature 16 cores and 32 threads, providing substantial multitasking capabilities. The Ryzen 9 9955HX operates at a base CPU speed of 16 x 2.5 GHz, while the Ryzen AI Max Plus 395 runs at a slightly faster base speed of 16 x 3 GHz. This difference could result in the Ryzen AI Max Plus 395 having a higher base processing speed for general tasks.

For turbo performance, the Ryzen 9 9955HX reaches a turbo clock speed of 5.4 GHz, which is higher than the Ryzen AI Max Plus 395's 5.1 GHz turbo clock speed, suggesting a slight edge in burst performance for the Ryzen 9 9955HX.

Both processors have identical cache configurations, including 16 MB of L2 cache, 64 MB of L3 cache, and 1280 KB of L1 cache. Additionally, both share the same L2 core size of 1 MB per core and L3 core size of 4 MB per core. Neither product features big.LITTLE technology or an unlocked multiplier, and the clock multiplier differs slightly, with the Ryzen 9 9955HX at 25 and the Ryzen AI Max Plus 395 at 30. In summary, the Ryzen 9 9955HX offers a faster turbo clock speed, while the Ryzen AI Max Plus 395 has a higher base clock speed.

The AMD Ryzen 9 9955HX and the AMD Ryzen AI Max Plus 395 show distinct differences in benchmark performance. The Ryzen 9 9955HX achieves a PassMark result of 57,540, while the Ryzen AI Max Plus 395 has a slightly lower result of 54,021. This indicates that the Ryzen 9 9955HX scores higher overall in multi-threaded workloads.

For single-thread performance, the Ryzen 9 9955HX also leads with a score of 4,452, compared to the Ryzen AI Max Plus 395's 4,142. This suggests that the Ryzen 9 9955HX performs better in tasks that rely on single-threaded processing.

In summary, the Ryzen 9 9955HX outperforms the Ryzen AI Max Plus 395 in both overall and single-thread benchmark scores, showing a clear edge in processing power based on the provided PassMark results.

The integrated graphics of the AMD Ryzen 9 9955HX and the AMD Ryzen AI Max Plus 395 have several differences in terms of performance and specifications. The Ryzen 9 9955HX features a Radeon 610M GPU with a base clock speed of 1500 MHz and a turbo clock speed of 2200 MHz. In contrast, the Ryzen AI Max Plus 395 is equipped with a Radeon 8060S GPU, which operates at a slightly lower base clock speed of 1295 MHz, but has a significantly higher turbo clock speed of 2900 MHz.

Both processors support DirectX 12, OpenGL 4.6, and OpenCL 2 or 3, with the Ryzen AI Max Plus 395 supporting OpenCL 3, which is a newer version than the Ryzen 9 9955HX’s OpenCL 2. Both models support up to four displays. The Ryzen 9 9955HX has 8 texture mapping units (TMUs), 4 render output units (ROPs), and 128 shading units, while the Ryzen AI Max Plus 395 has a much larger GPU with 160 TMUs, 64 ROPs, and 2560 shading units.

In summary, the Ryzen AI Max Plus 395 offers a more powerful integrated GPU with higher clock speeds, more TMUs, ROPs, and shading units, as well as a newer version of OpenCL support, compared to the Ryzen 9 9955HX. However, the Ryzen 9 9955HX still offers solid integrated graphics performance for most tasks.

The AMD Ryzen 9 9955HX and the AMD Ryzen AI Max Plus 395 differ in several key memory specifications. The Ryzen 9 9955HX supports a maximum RAM speed of 5600 MHz, whereas the Ryzen AI Max Plus 395 can handle a significantly faster 8000 MHz RAM speed. Both processors use DDR5 memory, but the Ryzen AI Max Plus 395 supports a higher memory speed, which could result in faster data transfer rates under memory-intensive tasks.

In terms of memory channels, the Ryzen 9 9955HX supports 2 channels, while the Ryzen AI Max Plus 395 supports 4 channels, allowing for potentially better memory bandwidth and multitasking performance in the latter.

Additionally, the maximum memory amount differs between the two. The Ryzen 9 9955HX can support up to 96 GB of memory, while the Ryzen AI Max Plus 395 can handle a larger 128 GB. The Ryzen AI Max Plus 395 also supports ECC memory, which is not supported by the Ryzen 9 9955HX, making the former more suitable for applications that require memory error correction for higher reliability.

The AMD Ryzen 9 9955HX and the AMD Ryzen AI Max Plus 395 are identical in terms of their core feature set. Both processors support the same instruction sets, including MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2. This means that both are equipped with a wide range of advanced instructions for optimized performance across a variety of workloads.

Both processors also utilize multithreading, allowing them to handle multiple tasks simultaneously, which is essential for modern computing. Furthermore, both models have the NX bit feature, providing enhanced security by preventing certain types of malicious attacks.

In summary, the Ryzen 9 9955HX and the Ryzen AI Max Plus 395 are identical in terms of features, with both processors offering the same instruction sets, multithreading capability, and NX bit support.