AMD Instinct MI325X vs NVIDIA GeForce RTX 5080 Mobile Comparison

AMD Instinct MI325X and NVIDIA GeForce RTX 5080 Mobile occupy opposite ends of the hardware spectrum. The MI325X is a massive accelerator module built for compute density, while the RTX 5080 Mobile is a power-scaled laptop GPU. Direct benchmark comparisons are impossible because the database contains no head-to-head test results for the MI325X, and its average benchmark score is zero with no recorded tests. The RTX 5080 Mobile, by contrast, has a full suite of recorded results and a percentile rank of 81 among all GPUs. This analysis relies strictly on the recorded specifications and the RTX 5080 Mobile’s benchmark data.

Head-to-Head Benchmarks

The database lists no shared benchmark runs between these two products. The MI325X has an empty benchmark array, an average benchmark score of zero, and no nearest rivals. The RTX 5080 Mobile has ten recorded tests. Its average benchmark score is 38,349 points. The highest individual score comes from Geekbench Vulkan at 169,754, followed closely by Geekbench OpenCL at 166,986. In Passmark’s G3D suite, the RTX 5080 Mobile scores 27,711. Passmark GPU Compute reaches 12,134. DirectX 9 scores 314, DirectX 11 scores 253, and DirectX 10 scores 171. DirectX 12 scores 116, while Passmark G2D scores 1,095.

The RTX 5080 Mobile’s nearest rivals in the database are all within a narrow band. The NVIDIA GeForce MX570 averages 38,299 points, a delta of 0.1 percent. The NVIDIA GeForce RTX 4080 Mobile averages 38,135 points, a delta of 0.6 percent. On the other side, the NVIDIA GeForce MX570 A averages 38,691 points, a delta of negative 0.9 percent, and the AMD Radeon Pro 580X averages 38,706 points, also negative 0.9 percent. This means the RTX 5080 Mobile sits almost exactly in the middle of these four GPUs. It is marginally faster than the MX570 and RTX 4080 Mobile, but marginally slower than the MX570 A and Radeon Pro 580X. The deltas are tiny, under one percent in every case, indicating that the RTX 5080 Mobile delivers performance essentially identical to its closest competition.

Because the MI325X has no benchmark entries, no score comparisons can be made. The RTX 5080 Mobile’s 81st percentile rank places it above most GPUs in the database, but the MI325X’s 50th percentile rank is based on no actual measurements, so it carries no comparative weight. The only quantitative statement possible is that the MI325X has no recorded benchmark scores, while the RTX 5080 Mobile has an average of 38,349 points across ten tests.

Architecture Differences

The MI325X uses the Aqua Vanjaram chip with CDNA 3.0 architecture, built on a 5 nm process at TSMC. It contains 153,000 million transistors on a 1017 mm² die, giving a transistor density of 150.4 million per square millimeter. This is a data center accelerator with a 1000 W TDP and an OAM module slot width. It has no display outputs, no power connectors, and no DirectX, OpenGL, or Vulkan API support. The RTX 5080 Mobile uses the GB203 chip with Blackwell 2.0 architecture, also on a 5 nm TSMC process. It has 45,600 million transistors on a 378 mm² die, for a density of 120.6 million per square millimeter. This is an integrated graphics package (IGP) with an 80 W TDP and portable-device-dependent display outputs.

The MI325X has 19,456 shading units, 1,216 texture mapping units, and zero ROPs. The RTX 5080 Mobile has 7,680 shading units, 240 TMUs, and 96 ROPs. The MI325X has no RT cores and no tensor cores listed. The RTX 5080 Mobile has 60 RT cores and 240 tensor cores. The MI325X’s pixel rate is listed as zero megapixels per second, consistent with a compute-only accelerator that lacks a display pipeline. The RTX 5080 Mobile produces 144.0 GPixel/s. Texture rate for the MI325X is 2,553.6 GTexel/s, while the RTX 5080 Mobile reaches 360.0 GTexel/s. Floating point performance differs by a factor of roughly 3.5: the MI325X delivers 81.72 TFLOPS in both FP32 and FP16 (at a 1:1 ratio), while the RTX 5080 Mobile delivers 23.04 TFLOPS in both FP32 and FP16, also at 1:1.

Memory architecture is drastically different. The MI325X has 256 GB of HBM3e on an 8192-bit bus, yielding 6.14 TB/s of bandwidth. Memory clock is 1500 MHz with 6 Gbps effective speed. The RTX 5080 Mobile has 16 GB of GDDR7 on a 256-bit bus, producing 896.0 GB/s. Its memory clock is 1750 MHz with 28 Gbps effective speed. The MI325X has roughly seven times the memory capacity and nearly seven times the memory bandwidth. The RTX 5080 Mobile uses a much narrower bus but compensates with a higher effective memory clock per pin.

Clock speeds favor the MI325X in boost terms. The MI325X runs at 1000 MHz base and 2100 MHz boost. The RTX 5080 Mobile runs at 975 MHz base and 1500 MHz boost. The MI325X’s boost clock is 40 percent higher. However, the RTX 5080 Mobile’s entire package operates within an 80 W envelope, while the MI325X’s TDP is 1000 W. The RTX 5080 Mobile is an active production product, released on April 1, 2025. The MI325X was released on October 9, 2024, with no production status listed. The MI325X’s predecessor is listed as Radeon Instinct, while the RTX 5080 Mobile’s predecessor is GeForce 40 Mobile. Neither product has a successor listed.

Where Each One Wins

The MI325X wins decisively in raw compute throughput. Its FP32 and FP16 figures of 81.72 TFLOPS are 3.5 times higher than the RTX 5080 Mobile’s 23.04 TFLOPS. Texture rate is also far higher at 2,553.6 GTexel/s versus 360.0 GTexel/s. Memory capacity of 256 GB dwarfs the RTX 5080 Mobile’s 16 GB, and the 6.14 TB/s bandwidth is nearly seven times greater. The 8192-bit bus allows data movement that the 256-bit GDDR7 interface cannot approach. For workloads that need massive memory pools or extreme bandwidth, such as large model inference or high-performance computing, the MI325X is the clear choice based on specifications alone.

The RTX 5080 Mobile wins in every area related to graphics output and consumer software support. It has 96 ROPs, a 144.0 GPixel/s pixel rate, and support for DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI325X has zero ROPs, zero pixel rate, and no API support listed. The RTX 5080 Mobile has 60 RT cores and 240 tensor cores, enabling ray tracing and AI acceleration, while the MI325X lists neither. The RTX 5080 Mobile’s 80 W TDP makes it suitable for portable devices, whereas the MI325X’s 1000 W TDP requires an OAM module with a suggested 1400 W power supply. The RTX 5080 Mobile’s display outputs are portable-device-dependent, meaning it can drive screens in laptops. The MI325X has no outputs at all.

Benchmark data only exists for the RTX 5080 Mobile. Its Passmark G3D score of 27,711 and Geekbench scores above 166,000 indicate strong general-purpose GPU performance. The MI325X has no measured results, so no wins can be assigned to it in any recorded test. The RTX 5080 Mobile’s nearest rivals show that it performs within one percent of the MX570, RTX 4080 Mobile, MX570 A, and Radeon Pro 580X. This suggests that for typical graphics workloads, the RTX 5080 Mobile is a solid mid-pack performer relative to its immediate competition.

The Verdict

The data supports a straightforward split. The AMD Instinct MI325X is a compute accelerator with no graphics capabilities and no benchmark scores. It offers 256 GB of HBM3e, 6.14 TB/s bandwidth, and 81.72 TFLOPS of FP32 performance, all within a 1000 W OAM module. The NVIDIA GeForce RTX 5080 Mobile is a laptop-class GPU with full graphics APIs, ray tracing cores, tensor cores, and a measured average benchmark score of 38,349. It operates at 80 W and fits in an IGP form factor.

Anyone needing a GPU for gaming, content creation, or any display-driven workload should choose the RTX 5080 Mobile. It has the only recorded performance data, the only graphics pipeline, and the only software API support. The MI325X cannot output video, does not support DirectX, OpenGL, or Vulkan, and has no benchmark entries. It is not a graphics card in any practical sense.

Anyone needing a high-bandwidth compute accelerator for large datasets should consider the MI325X, but only if the workload can use its specific memory and compute characteristics. The 256 GB capacity and 6.14 TB/s bandwidth are unmatched in this comparison. The 81.72 TFLOPS FP32 figure is far above the RTX 5080 Mobile’s 23.04 TFLOPS. However, the MI325X’s zero benchmark scores mean there is no recorded evidence of its real-world performance. The database cannot confirm how it performs in any actual test. The RTX 5080 Mobile’s 81st percentile rank and full benchmark suite provide concrete evidence of its capabilities. The MI325X’s 50th percentile rank is based on no measurements and should be disregarded as informational only.

The RTX 5080 Mobile is the only product in this comparison with verified performance. Its launch date of April 1, 2025, and active production status indicate current availability. The MI325X’s release date of October 9, 2024, with no production status, leaves its availability unclear.

FAQ

Q: Does the AMD Instinct MI325X have any benchmark scores in the database?

A: No. The MI325X has an empty benchmark array, an average benchmark score of zero, and no nearest rivals listed.

Q: What is the average benchmark score of the NVIDIA GeForce RTX 5080 Mobile?

A: The RTX 5080 Mobile has an average benchmark score of 38,349 points across ten recorded tests.

Q: How much memory does each GPU have?

A: The MI325X has 256 GB of HBM3e memory, while the RTX 5080 Mobile has 16 GB of GDDR7 memory.

Q: Which GPU supports DirectX 12 Ultimate?

A: The RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI325X lists no API support.

Q: What is the TDP difference between the two?

A: The MI325X has a 1000 W TDP and a suggested 1400 W power supply. The RTX 5080 Mobile has an 80 W TDP and no suggested power supply listed.

Q: How does the RTX 5080 Mobile compare to its nearest rivals?

A: It is 0.1 percent faster than the NVIDIA GeForce MX570 and 0.6 percent faster than the RTX 4080 Mobile. It is 0.9 percent slower than the MX570 A and the AMD Radeon Pro 580X.

Specification Differences

| Specification | AMD Instinct MI325X | NVIDIA GeForce RTX 5080 Mobile |

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

| Architecture | CDNA 3.0 | Blackwell 2.0 |

| Process Node | 5 nm | 5 nm |

| Transistors | 153,000 million | 45,600 million |

| Die Size | 1017 mm² | 378 mm² |

| Transistor Density | 150.4M / mm² | 120.6M / mm² |

| Base Clock | 1000 MHz | 975 MHz |

| Boost Clock | 2100 MHz | 1500 MHz |

| Memory Size | 256 GB | 16 GB |

| Memory Type | HBM3e | GDDR7 |

| Memory Bus Width | 8192 bit | 256 bit |

| Memory Bandwidth | 6.14 TB/s | 896.0 GB/s |

| Shading Units | 19456 | 7680 |

| TMUs | 1216 | 240 |

| ROPs | 0 | 96 |

| RT Cores | Not listed | 60 |

| Tensor Cores | Not listed | 240 |

| Pixel Rate | 0 MPixel/s | 144.0 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 360.0 GTexel/s |

| FP32 Performance | 81.72 TFLOPS | 23.04 TFLOPS |

| FP16 Performance | 81.72 TFLOPS (1:1) | 23.04 TFLOPS (1:1) |

| TDP | 1000 W | 80 W |

| Slot Width | OAM Module | IGP |

| Power Connectors | None | None |

| Suggested PSU | 1400 W | Not listed |

| Bus Interface | PCIe 5.0 x16 | PCIe 5.0 x16 |

| Display Outputs | No outputs | Portable Device Dependent |

| DirectX Support | N/A | 12 Ultimate (12_2) |

| OpenGL Support | N/A | 4.6 |

| Vulkan Support | N/A | 1.4 |

| Release Date | 2024-10-09 | 2025-04-01 |

| Production Status | Not listed | Active |

| Predecessor | Radeon Instinct | GeForce 40 Mobile |

| Percentile vs All GPUs | 50 | 81 |

| Average Benchmark Score | 0 | 38349 |