AMD Ryzen 9 9955HX3D VS AMD Ryzen AI Max Plus 395

At a foundational level, the AMD Ryzen 9 9955HX3D and the AMD Ryzen AI Max Plus 395 share a remarkably similar baseline profile: both are built on a 4 nm process node, carry a 55W TDP, support a maximum CPU temperature of 100 °C, include integrated graphics, and are fully 64-bit compatible. Both are also designed for use in laptop and desktop form factors. For a buyer focused purely on these fundamentals, the two chips are essentially tied.

The one concrete differentiator in this group is the PCIe version: the Ryzen 9 9955HX3D supports the newer PCIe 5.0, while the Ryzen AI Max Plus 395 tops out at PCIe 4.0. In practice, PCIe 5.0 doubles the available bandwidth per lane compared to PCIe 4.0, which matters most when pairing the CPU with a cutting-edge Gen 5 NVMe SSD or a high-end discrete GPU that can saturate those lanes. For users with next-generation storage or graphics hardware, this is a meaningful advantage.

Overall, the 9955HX3D holds a clear edge in this group solely due to its newer PCIe generation. All other general specifications are identical, so if PCIe 5.0 compatibility is not a priority for your specific build or workflow, these two processors are effectively equal on every other foundational metric covered here.

The AMD Ryzen 9 9955HX3D and AMD Ryzen AI Max Plus 395 both feature 16 cores and 32 threads, indicating similar multi-threaded performance capabilities. However, the base CPU speed differs slightly between the two: the Ryzen 9 9955HX3D runs at 2.5 GHz per core, while the Ryzen AI Max Plus 395 operates at 3 GHz per core.

When it comes to turbo clock speed, the Ryzen 9 9955HX3D has the advantage with a peak speed of 5.4 GHz, compared to the Ryzen AI Max Plus 395’s 5.1 GHz. Both processors have an unlocked multiplier, but neither offers the ability to adjust this feature further, as both are listed as having a locked multiplier.

Both processors share the same L2 cache size of 16 MB and L1 cache size of 1280 KB. The Ryzen 9 9955HX3D has a significantly larger L3 cache with 128 MB compared to the Ryzen AI Max Plus 395, which only has 64 MB. The L2 and L3 cache sizes per core also differ: the Ryzen 9 9955HX3D has 1 MB of L2 cache and 8 MB of L3 cache per core, while the Ryzen AI Max Plus 395 has 1 MB of L2 cache and 4 MB of L3 cache per core. Both processors do not use big.LITTLE technology.

In benchmark testing, the AMD Ryzen 9 9955HX3D outperforms the AMD Ryzen AI Max Plus 395 in most areas. The Ryzen 9 9955HX3D achieves a PassMark result of 61356, significantly higher than the Ryzen AI Max Plus 395's 54021. For single-core performance in PassMark, the Ryzen 9 9955HX3D scores 4491, while the Ryzen AI Max Plus 395 scores 4142, showing a smaller difference in this specific test.

In Geekbench 6, the Ryzen 9 9955HX3D also leads in both single-core and multi-core results. It scores 3165 in the single-core test, compared to 2774 for the Ryzen AI Max Plus 395. In multi-core performance, the Ryzen 9 9955HX3D achieves 19858, while the Ryzen AI Max Plus 395 reaches 17698. Both products show a noticeable gap in multi-core performance, with the Ryzen 9 9955HX3D ahead by a significant margin.

Overall, the Ryzen 9 9955HX3D demonstrates stronger performance across all benchmarks, particularly in multi-core processing, which may be important for demanding tasks like content creation or simulations.

The AMD Ryzen 9 9955HX3D and AMD Ryzen AI Max Plus 395 both feature integrated graphics, but they differ significantly in their specifications. The Ryzen 9 9955HX3D is equipped with a Radeon 610M GPU, which has a base clock speed of 1500 MHz and a turbo boost of 2200 MHz. In comparison, the Ryzen AI Max Plus 395 uses a Radeon 8060S GPU, which has a lower base clock speed of 1295 MHz, but a higher turbo boost of 2900 MHz.

Both processors support DirectX 12, OpenGL 4.6, and OpenCL 2. The Ryzen 9 9955HX3D supports up to 4 displays, while the Ryzen AI Max Plus 395 also supports 4 displays. However, the GPUs differ greatly in their texture mapping units (TMUs), render output units (ROPs), and shading units. The Ryzen 9 9955HX3D has 8 TMUs, 4 ROPs, and 128 shading units, whereas the Ryzen AI Max Plus 395 has a much more powerful 160 TMUs, 64 ROPs, and 2560 shading units.

While both processors feature advanced graphics technologies, the Ryzen AI Max Plus 395 offers much higher graphics performance in terms of raw GPU units, including shading and rendering capabilities, suggesting it may handle more complex graphics tasks better than the Ryzen 9 9955HX3D.

The AMD Ryzen 9 9955HX3D and AMD Ryzen AI Max Plus 395 differ in several memory-related specifications. The Ryzen 9 9955HX3D supports a maximum RAM speed of 5600 MHz, while the Ryzen AI Max Plus 395 supports a faster 8000 MHz. Both processors use DDR5 memory, but the Ryzen 9 9955HX3D has 2 memory channels, while the Ryzen AI Max Plus 395 offers 4 channels, potentially allowing for higher memory bandwidth.

In terms of maximum memory capacity, the Ryzen 9 9955HX3D can handle up to 96 GB of RAM, whereas the Ryzen AI Max Plus 395 supports a larger 128 GB. Additionally, the Ryzen AI Max Plus 395 supports ECC memory, which is not supported by the Ryzen 9 9955HX3D, providing error-correction capabilities for more critical workloads.

These differences in memory speed, capacity, and channels indicate that the Ryzen AI Max Plus 395 might be more suitable for memory-intensive tasks, offering higher performance and greater scalability.

Both the AMD Ryzen 9 9955HX3D and the AMD Ryzen AI Max Plus 395 support the same set of instruction sets, including MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2. This ensures that both processors are equipped to handle a wide variety of tasks and workloads efficiently, with no significant difference in supported instructions.

Additionally, both processors utilize multithreading, enabling better handling of parallel workloads. They also both feature the NX bit, which provides enhanced security by preventing the execution of code from non-executable memory areas.

Overall, in terms of features, both processors are identical, offering the same set of capabilities related to instruction sets, multithreading, and security with the NX bit.