AMD Radeon R7 M365X vs NVIDIA RTX A400 Comparison

FAQ

Q: What is the performance gap between the NVIDIA RTX A400 and the AMD Radeon R7 M365X in OpenCL workloads?

A: The RTX A400 scores 22,844 in Geekbench OpenCL, while the R7 M365X scores 5,939. This gives the RTX A400 a 284.6% advantage in that test.

Q: How do the two cards compare in Vulkan performance?

A: The RTX A400 records 22,237 in Geekbench Vulkan versus 4,893 for the R7 M365X. The RTX A400 leads by 354.5%, its largest margin across the two head-to-head benchmarks.

Q: What are the memory specifications for each card?

A: The RTX A400 has 4 GB of GDDR6 memory on a 64-bit bus, delivering 96.00 GB/s bandwidth. The R7 M365X has 1024 MB of GDDR5 memory on a 128-bit bus, delivering 64.00 GB/s bandwidth.

Q: Which card has a higher transistor density?

A: The RTX A400, built on an 8 nm process at Samsung, packs 8,700 million transistors into a 200 mm² die, resulting in 43.5M transistors per mm². The R7 M365X, on TSMC's 28 nm process, has 950 million transistors on a 77 mm² die, yielding 12.3M per mm².

Q: What is the production status of each card?

A: The NVIDIA RTX A400 is listed as Active, with a release date in 2024. The AMD Radeon R7 M365X is End-of-life, having launched in 2015.

Q: How do the two cards rank against all GPUs in the database?

A: The RTX A400 sits at the 35th percentile, while the R7 M365X sits at the 32nd percentile. Their average benchmark scores are 6,078 and 5,416, respectively.

The Verdict

The data points to a decisive win for the NVIDIA RTX A400 across all measured dimensions. In the two available head-to-head tests, the RTX A400 wins both, with margins of 284.6% in OpenCL and 354.5% in Vulkan. The average benchmark score reinforces this: 6,078 for the RTX A400 versus 5,416 for the R7 M365X, a gap of roughly 12%. The percentile rankings also favor the newer card, 35th versus 32nd, though both sit in the lower-middle range of the database.

Buyers seeking current workstation-class features should choose the RTX A400. It supports DirectX 12 Ultimate (12_2), Vulkan 1.4, and includes ray tracing cores and tensor cores, none of which exist on the R7 M365X. The R7 M365X, with its GCN 1.0 architecture, DirectX 12 (11_1) support, and end-of-life status, is only relevant for legacy systems or applications where its older feature set suffices. For any modern workload, the RTX A400 is the only rational pick based on the recorded benchmarks.

The R7 M365X does have one advantage: its 128-bit memory bus is twice as wide as the RTX A400's 64-bit bus. However, this does not translate to higher bandwidth, as the RTX A400's GDDR6 memory at 96.00 GB/s outpaces the R7 M365X's GDDR5 at 64.00 GB/s. In every performance metric available, the RTX A400 leads.

Architecture Differences

The NVIDIA RTX A400 is built on the Ampere architecture, specifically the GA107 chip, fabricated on Samsung's 8 nm process. The AMD Radeon R7 M365X uses the GCN 1.0 architecture with the Litho chip, manufactured on TSMC's 28 nm process. This process gap is substantial: 8 nm versus 28 nm, representing a generational leap in manufacturing technology.

Transistor counts reflect this difference. The RTX A400 integrates 8,700 million transistors on a 200 mm² die, while the R7 M365X has 950 million on a 77 mm² die. The resulting transistor density is 43.5M per mm² for the RTX A400 versus 12.3M per mm² for the R7 M365X, a 3.5x density advantage for the newer card.

The RTX A400 features 768 shading units, 24 texture mapping units, 16 ROPs, 6 ray tracing cores, and 24 tensor cores. The R7 M365X has 384 shading units, 24 TMUs, and 8 ROPs, with no ray tracing or tensor cores. The shading unit count is double on the RTX A400, while TMU counts are equal and ROP counts favor the RTX A400 by 2x.

Memory technologies differ fundamentally. The RTX A400 uses 4 GB of GDDR6 at 1500 MHz (12 Gbps effective) on a 64-bit bus. The R7 M365X uses 1024 MB of GDDR5 at 1000 MHz (4 Gbps effective) on a 128-bit bus. Despite the narrower bus, the RTX A400 achieves 96.00 GB/s versus 64.00 GB/s, a 50% bandwidth advantage.

API support also diverges. The RTX A400 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The R7 M365X supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170. The RTX A400's DirectX 12 Ultimate designation includes feature-level 12_2, which enables hardware ray tracing and mesh shaders, capabilities absent from the older card.

The RTX A400 is a single-slot card with no power connectors, a 50 W TDP, and a suggested power supply of 250 W. It connects via PCIe 4.0 x8 and has four mini-DisplayPort 1.4a outputs. The R7 M365X has no specified TDP, slot width, power connectors, or display outputs in the database, and uses PCIe 3.0 x8.

Head-to-Head Benchmarks

The Geekbench OpenCL test shows a massive gap. The RTX A400 scores 22,844 against the R7 M365X's 5,939, a delta of 284.6%. This is not a marginal improvement but a wholesale generational leap. The RTX A400's FP32 compute of 2.706 TFLOPS dwarfs the R7 M365X's 633.6 GFLOPS, a 4.3x difference that directly explains the OpenCL result.

In Geekbench Vulkan, the margin grows even wider. The RTX A400 records 22,237, while the R7 M365X manages 4,893. The 354.5% delta is the largest of any head-to-head measurement. Vulkan 1.4 support on the RTX A400 versus 1.2.170 on the R7 M365X likely contributes to the performance separation, along with the raw compute and memory bandwidth advantages.

Pixel and texture rates tell a similar story. The RTX A400 achieves 28.19 GPixel/s and 42.29 GTexel/s. The R7 M365X achieves 6.600 GPixel/s and 19.80 GTexel/s. The pixel rate is 4.3x higher on the RTX A400, while the texture rate is 2.1x higher. These rates directly impact fill-rate-bound workloads such as high-resolution rendering.

The RTX A400 wins both head-to-head benchmarks, giving it a 2-0 record. The R7 M365X does not win a single test. The average benchmark scores reflect this dominance: 6,078 versus 5,416, a 12.2% overall advantage for the RTX A400. While the average score gap is smaller than the individual test deltas, this is because the R7 M365X only has two recorded benchmarks while the RTX A400 has nine, including several legacy DirectX tests where the newer card scores low (e.g., 32 in DirectX 10, 37 in DirectX 11, 27 in DirectX 12).

The RTX A400's nearest rivals in the database include the NVIDIA GeForce MX230 (average score 6,077, 0% delta), the NVIDIA Quadro P2000 (6,049, 0.5% delta), and the Intel Iris Pro Graphics 6200 (6,117, -0.6% delta). The R7 M365X sits near the AMD Radeon 610M (5,444, -0.5% delta) and the NVIDIA Quadro M4000 (5,467, -0.9% delta). These comparisons show both cards are firmly in the entry-level performance tier, but the RTX A400 leads that tier.

Specification Differences

| Specification | NVIDIA RTX A400 | AMD Radeon R7 M365X |

|---|---|---|

| Process Node | 8 nm (Samsung) | 28 nm (TSMC) |

| Transistors | 8,700 million | 950 million |

| Die Size | 200 mm² | 77 mm² |

| Transistor Density | 43.5M / mm² | 12.3M / mm² |

| Shading Units | 768 | 384 |

| ROPs | 16 | 8 |

| Ray Tracing Cores | 6 | None |

| Tensor Cores | 24 | None |

| Memory Size | 4 GB | 1024 MB |

| Memory Type | GDDR6 | GDDR5 |

| Memory Bus Width | 64 bit | 128 bit |

| Memory Bandwidth | 96.00 GB/s | 64.00 GB/s |

| FP32 Compute | 2.706 TFLOPS | 633.6 GFLOPS |

| FP16 Compute | 2.706 TFLOPS (1:1) | Not specified |

| Pixel Rate | 28.19 GPixel/s | 6.600 GPixel/s |

| Texture Rate | 42.29 GTexel/s | 19.80 GTexel/s |

| TDP | 50 W | Not specified |

| Bus Interface | PCIe 4.0 x8 | PCIe 3.0 x8 |

| DirectX Support | 12 Ultimate (12_2) | 12 (11_1) |

| Vulkan Support | 1.4 | 1.2.170 |

| Production Status | Active | End-of-life |

| Release Date | 2024-04-15 | 2015-05-04 |

The table highlights the core differences. The RTX A400 has twice the shading units and ROPs, a 4.3x FP32 compute advantage, and a 50% bandwidth lead despite a narrower memory bus. The R7 M365X only matches the RTX A400 in TMUs (24 each) and has a wider memory bus, but the GDDR5 memory technology at lower effective clock speeds negates that width advantage.

The RTX A400's 1:1 FP16 ratio is notable, as the R7 M365X has no recorded FP16 capability. The newer card also supports ray tracing and tensor operations, features entirely absent from the older GCN part. The production status difference is stark: Active versus End-of-life, a nine-year gap in release dates that explains the architectural chasm.