AMD Instinct MI325X vs NVIDIA RTX 5880 Ada Generation Comparison

FAQ

Q: What are the core architectural identities of the AMD Instinct MI325X and the NVIDIA RTX 5880 Ada Generation?

A: The AMD Instinct MI325X uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, while the NVIDIA RTX 5880 Ada Generation uses the Ada Lovelace architecture on the AD102 chip. Both are manufactured on a 5 nm process at TSMC.

Q: How do the memory configurations differ between the two cards?

A: The MI325X has 256 GB of HBM3e memory on a 8192-bit bus with 6.14 TB/s bandwidth. The RTX 5880 has 48 GB of GDDR6 memory on a 384-bit bus with 864.0 GB/s bandwidth. The MI325X memory bus is over 21 times wider and the bandwidth is over 7 times higher.

Q: What is the transistor count difference between the chips?

A: The MI325X contains 153,000 million transistors on a 1017 mm² die, while the RTX 5880 has 76,300 million transistors on a 609 mm² die. The MI325X has roughly double the transistor count and a die that is 408 mm² larger.

Q: Which card has a higher FP32 compute rating?

A: The MI325X delivers 81.72 TFLOPS FP32, while the RTX 5880 delivers 69.27 TFLOPS FP32. The MI325X is approximately 18% higher in raw FP32 throughput.

Q: What is the difference in power requirements between the two?

A: The MI325X has a TDP of 1000 W and a suggested PSU of 1400 W. The RTX 5880 has a TDP of 285 W and a suggested PSU of 600 W. The MI325X requires more than three times the power.

Q: What API support does each card offer?

A: The RTX 5880 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI325X has no API support listed for DirectX, OpenGL, or Vulkan, indicating it is not designed for graphics rendering workloads.

Where Each One Wins

The AMD Instinct MI325X wins decisively in raw compute density and memory capacity. Its 256 GB of HBM3e memory dwarfs the 48 GB GDDR6 pool of the RTX 5880, making it the clear choice for workloads that require massive in-memory datasets, such as large language model inference or scientific simulation. The 8192-bit memory bus and 6.14 TB/s bandwidth provide a data movement capability that the RTX 5880 cannot approach. The MI325X also has a higher shading unit count at 19,456 versus 14,080, and more TMUs at 1,216 versus 440. Its FP32 throughput of 81.72 TFLOPS exceeds the RTX 5880's 69.27 TFLOPS.

The NVIDIA RTX 5880 Ada Generation wins in every area related to graphics and rendering. It has 176 ROPs while the MI325X has 0, and it delivers a pixel rate of 433.0 GPixel/s versus 0 MPixel/s for the AMD card. The RTX 5880 also has 110 RT cores and 440 tensor cores, features entirely absent from the MI325X. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI325X has no graphics API support. The RTX 5880 includes 4x DisplayPort 1.4a outputs, whereas the MI325X has no display outputs. The NVIDIA card is also far more power-efficient, with a 285 W TDP versus 1000 W, and it has a production status of Active, while the MI325X does not have a listed production status.

Architecture Differences

The MI325X is built on CDNA 3.0, an architecture specifically designed for compute acceleration without any graphics functionality. This explains the absence of ROPs, RT cores, tensor cores, and display outputs. The chip, Aqua Vanjaram, is massive at 1017 mm² and packs 153,000 million transistors, resulting in a transistor density of 150.4M per mm². The MI325X uses HBM3e memory, which is stacked and placed on-package, allowing for the 8192-bit bus width. Its memory clock is listed at 1500 MHz with 6 Gbps effective speed.

The RTX 5880 uses Ada Lovelace, NVIDIA's workstation-oriented architecture that retains full graphics capabilities. The AD102 chip is 609 mm² with 76,300 million transistors, giving a density of 125.3M per mm². Memory is GDDR6 on a 384-bit bus, with a clock of 2250 MHz and 18 Gbps effective speed. The RTX 5880 integrates 110 RT cores and 440 tensor cores, enabling hardware-accelerated ray tracing and AI workloads. Its boost clock is 2460 MHz, compared to 2100 MHz for the MI325X.

The MI325X has no display outputs and no graphics API support, confirming its role as a pure compute accelerator. The RTX 5880 has 4x DisplayPort 1.4a and full API compatibility. The MI325X uses a PCIe 5.0 x16 interface, while the RTX 5880 uses PCIe 4.0 x16. The MI325X is an OAM module with no power connectors, while the RTX 5880 is a dual-slot card with a single 16-pin connector.

Specification Differences

| Specification | AMD Instinct MI325X | NVIDIA RTX 5880 Ada Generation |

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

| Architecture | CDNA 3.0 | Ada Lovelace |

| Process Node | 5 nm | 5 nm |

| Transistors | 153,000 million | 76,300 million |

| Die Size | 1017 mm² | 609 mm² |

| Transistor Density | 150.4M / mm² | 125.3M / mm² |

| Base Clock | 1000 MHz | 975 MHz |

| Boost Clock | 2100 MHz | 2460 MHz |

| Memory Size | 256 GB | 48 GB |

| Memory Type | HBM3e | GDDR6 |

| Memory Bus Width | 8192 bit | 384 bit |

| Memory Bandwidth | 6.14 TB/s | 864.0 GB/s |

| Shading Units | 19456 | 14080 |

| TMUs | 1216 | 440 |

| ROPs | 0 | 176 |

| RT Cores | None | 110 |

| Tensor Cores | None | 440 |

| Pixel Rate | 0 MPixel/s | 433.0 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 1,082.4 GTexel/s |

| FP32 | 81.72 TFLOPS | 69.27 TFLOPS |

| FP16 | 81.72 TFLOPS (1:1) | 69.27 TFLOPS (1:1) |

| TDP | 1000 W | 285 W |

| Slot Width | OAM Module | Dual-slot |

| Power Connectors | None | 1x 16-pin |

| Suggested PSU | 1400 W | 600 W |

| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x16 |

| Display Outputs | No outputs | 4x DisplayPort 1.4a |

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

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

| Predecessor | Radeon Instinct | Workstation Ampere |

| Successor | None | Blackwell PRO W |

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between these two cards. The AMD Instinct MI325X has no recorded benchmarks, an average benchmark score of 0, and a percentile versus all GPUs of 50. The NVIDIA RTX 5880 has a substantial set of recorded benchmark results. Its average benchmark score is 45,972, placing it in the 85th percentile versus all GPUs.

Looking at the RTX 5880's individual benchmark results, the highest score comes from Geekbench OpenCL at 326,898. In Passmark tests, it scores 335 in DirectX 9, 228 in DirectX 11, 167 in DirectX 10, and 70 in DirectX 12. The Passmark G3D score is 25,096, and the GPU compute score is 14,208. The G2D score is 777.

The nearest rivals for the RTX 5880 in the database are all within a narrow band. The NVIDIA RTX A2000 has an average score of 46,043, which is 0.2% lower than the RTX 5880. The Intel Arc A730M scores 45,592, which is 0.8% higher. The AMD Radeon Pro 5500 XT scores 45,384, which is 1.3% higher. The AMD Radeon RX 5600M scores 46,601, which is 1.4% lower. These small deltas indicate that the RTX 5880 sits in a competitive cluster of workstation and mobile GPUs, with no single rival holding a significant advantage.

The MI325X has zero recorded wins and zero recorded losses in head-to-head comparisons, as the database shows no benchmark entries for it. Its percentile of 50 is the default for an unmeasured product. This does not indicate poor performance; it simply means no direct measurement exists in the database. The specification data, however, suggests it would excel in memory-bound compute tasks.

The Verdict

The data indicates two completely different products that happen to share a 5 nm TSMC process. The AMD Instinct MI325X is a pure compute accelerator with no graphics capability. Its 256 GB HBM3e memory and 6.14 TB/s bandwidth make it the only choice for workloads where memory capacity and bandwidth are the primary constraints. The 8192-bit bus is unprecedented in the database, and the FP32 throughput of 81.72 TFLOPS is the higher of the two. The 1000 W TDP and OAM module form factor confirm its datacenter orientation.

The NVIDIA RTX 5880 Ada Generation is a fully featured workstation GPU. It is the only one of the two with any benchmark results, and those results place it in the 85th percentile among all GPUs. Its graphics capabilities, including 176 ROPs, 110 RT cores, 440 tensor cores, and 4x DisplayPort outputs, make it functional for rendering, ray tracing, and AI-assisted graphics work. The 285 W TDP and dual-slot design allow it to fit in standard workstation configurations.

For a buyer needing a display output or graphics API support, the MI325X is not an option. For a buyer needing more than 48 GB of memory or memory bandwidth beyond 864.0 GB/s, the RTX 5880 falls short. The MI325X targets batch compute and large-model inference, while the RTX 5880 targets interactive workstations. Neither product can substitute for the other in its respective domain. The choice is determined entirely by the workload's need for memory capacity versus graphics functionality.