AMD Instinct MI455X vs NVIDIA RTX 5880 Ada Generation Comparison

Head-to-Head Benchmarks

The benchmark database contains no direct head-to-head benchmark results for the AMD Instinct MI455X versus the NVIDIA RTX 5880 Ada Generation. The head-to-head benchmark array is empty, and neither part has a recorded wins tally in the comparison. This means the analysis must proceed on the basis of the listed specifications, the recorded benchmark scores for the NVIDIA part, and the percentile data available in the database.

For the NVIDIA RTX 5880 Ada Generation, the database lists several benchmark results. In Geekbench OpenCL, it records a score of 326,898. In Passmark tests, it achieves 335 in DirectX 9, 228 in DirectX 11, 167 in DirectX 10, and 70 in DirectX 12. The Passmark G2D score is 777, the G3D score is 25,096, and the GPU compute score is 14,208. Its average benchmark score across all recorded tests is 45,972, placing it at the 85th percentile among all GPUs in the database.

The AMD Instinct MI455X, by contrast, has no recorded benchmark scores in the database. Its average benchmark score is listed as 0, and its percentile versus all GPUs is 50. The nearest rivals listed for the NVIDIA part are the NVIDIA RTX A2000, with an average score of 46,043 and a delta of -0.2 percent, the Intel Arc A730M at 45,592 with a delta of 0.8 percent, the AMD Radeon Pro 5500 XT at 45,384 with a delta of 1.3 percent, and the AMD Radeon RX 5600M at 46,601 with a delta of -1.4 percent. These deltas show the RTX 5880 sits within a narrow band of its closest competitors on average score, roughly 1.4 percent above the lowest and 0.8 percent above the highest of that group.

Because the MI455X has no benchmark entries, no direct score comparisons can be made between the two cards. The data shows that the RTX 5880 has a substantial body of measured performance results, while the MI455X has none recorded. This asymmetry means the head-to-head section of the database remains empty, and the comparison must rely on the architectural and specification fields to draw any conclusions.

FAQ

Q: Which GPU has a higher FP32 performance figure in the database?

A: The AMD Instinct MI455X lists an FP32 performance of 157.3 TFLOPS, while the NVIDIA RTX 5880 Ada Generation lists 69.27 TFLOPS. The AMD part is approximately 2.27 times higher on this specification.

Q: What is the memory capacity difference between the two cards?

A: The AMD Instinct MI455X has 432 GB of HBM4 memory on a 24576-bit bus, while the NVIDIA RTX 5880 Ada Generation has 48 GB of GDDR6 memory on a 384-bit bus. The memory bandwidth figures are 23.3 TB/s for the AMD card and 864.0 GB/s for the NVIDIA card.

Q: Does the NVIDIA RTX 5880 support ray tracing?

A: Yes. The RTX 5880 Ada Generation lists 110 RT cores and 440 tensor cores. The AMD Instinct MI455X does not list RT cores or tensor cores in the database.

Q: What process nodes are used by each GPU?

A: The AMD Instinct MI455X uses a 2 nm process at TSMC, while the NVIDIA RTX 5880 Ada Generation uses a 5 nm process at TSMC. The transistor counts are 320,000 million for the AMD part and 76,300 million for the NVIDIA part.

Q: Which card has a higher boost clock?

A: The NVIDIA RTX 5880 Ada Generation lists a boost clock of 2460 MHz, while the AMD Instinct MI455X lists a boost clock of 2400 MHz. The base clocks are 975 MHz for the NVIDIA card and 1000 MHz for the AMD card.

Q: Are there any display outputs on the AMD Instinct MI455X?

A: No. The AMD card lists "No outputs" for display outputs. The NVIDIA RTX 5880 Ada Generation lists 4x DisplayPort 1.4a outputs.

Architecture Differences

The two GPUs come from different architectural lineages. The AMD Instinct MI455X uses the CDNA 5.0 architecture, built around the MI450 256CU chip. The NVIDIA RTX 5880 Ada Generation uses the Ada Lovelace architecture, built around the AD102 chip. These architectures target different workloads, as reflected in the feature sets recorded in the database.

The AMD part has 32,768 shading units, 1,024 texture mapping units, and 0 ROPs. Its pixel rate is listed as 0 MPixel/s, and its texture rate is 2,457.6 GTexel/s. The NVIDIA part has 14,080 shading units, 440 texture mapping units, and 176 ROPs. Its pixel rate is 433.0 GPixel/s, and its texture rate is 1,082.4 GTexel/s. The AMD card has no RT cores or tensor cores listed, while the NVIDIA card includes 110 RT cores and 440 tensor cores.

The AMD card uses HBM4 memory with a 24576-bit bus, while the NVIDIA card uses GDDR6 with a 384-bit bus. The AMD card supports PCIe 6.0 x16, while the NVIDIA card uses PCIe 4.0 x16. The NVIDIA card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD card lists N/A for DirectX, OpenGL, and Vulkan API support. The AMD card is an EAM Module slot width with no power connectors listed, while the NVIDIA card is dual-slot with a single 16-pin power connector.

The transistor density figures differ as well. The AMD part has a transistor density of 107.0M per mm², while the NVIDIA part has 125.3M per mm². The die sizes are 2990 mm² for the AMD card and 609 mm² for the NVIDIA card. These figures indicate the AMD card uses a significantly larger die with a lower density, likely reflecting the HBM4 memory integration and the large compute array.

Specification Differences

The two cards differ across nearly every recorded specification field. The AMD Instinct MI455X has a base clock of 1000 MHz and a boost clock of 2400 MHz, while the NVIDIA RTX 5880 Ada Generation has a base clock of 975 MHz and a boost clock of 2460 MHz. The memory clocks are 1900 MHz (7.6 Gbps effective) for the AMD card and 2250 MHz (18 Gbps effective) for the NVIDIA card.

Memory capacity differs substantially: 432 GB versus 48 GB. The bus widths are 24576 bit versus 384 bit. Bandwidth figures are 23.3 TB/s versus 864.0 GB/s. The shading unit counts are 32,768 versus 14,080. The texture mapping units are 1,024 versus 440. The ROP counts are 0 versus 176. The FP32 performance is 157.3 TFLOPS versus 69.27 TFLOPS, with FP16 figures matching each card's FP32 at a 1:1 ratio.

The thermal design power differs greatly: 2300 W for the AMD card versus 285 W for the NVIDIA card. The suggested power supply is 2700 W for the AMD card and 600 W for the NVIDIA card. The AMD card uses an EAM Module slot width with no power connectors, while the NVIDIA card is dual-slot with a 1x 16-pin connector. The bus interfaces are PCIe 6.0 x16 for the AMD card and PCIe 4.0 x16 for the NVIDIA card.

The NVIDIA card has dimensions of 267 mm length and 112 mm height. The AMD card has no dimensions listed. The NVIDIA card is marked as Active in production status, while the AMD card has no production status recorded. The release dates are 2026-07-22 for the AMD card and 2024-01-04 for the NVIDIA card. The NVIDIA card has a successor listed as Blackwell PRO W, while the AMD card has no successor. The predecessors are Radeon Instinct for the AMD card and Workstation Ampere for the NVIDIA card.

Where Each One Wins

The NVIDIA RTX 5880 Ada Generation wins in the areas supported by its recorded benchmark data. Its Passmark G3D score of 25,096 and GPU compute score of 14,208 indicate measured performance in graphics and compute workloads. Its Geekbench OpenCL score of 326,898 provides a general compute reference point. The card supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it suitable for applications that rely on those APIs. The presence of RT cores and tensor cores gives it dedicated hardware for ray tracing and tensor operations, which the AMD card lacks in the database listing. Its 4x DisplayPort 1.4a outputs allow direct display connectivity, while the AMD card has no display outputs.

The AMD Instinct MI455X wins on raw compute specifications. Its FP32 performance of 157.3 TFLOPS is more than double the NVIDIA card's 69.27 TFLOPS. Its memory capacity of 432 GB and bandwidth of 23.3 TB/s far exceed the NVIDIA card's 48 GB and 864.0 GB/s. The 24576-bit memory bus is substantially wider than the 384-bit bus on the NVIDIA card. The AMD card has more than double the shading units (32,768 versus 14,080) and more than double the texture mapping units (1,024 versus 440). Its texture rate of 2,457.6 GTexel/s is more than double the NVIDIA card's 1,082.4 GTexel/s. The AMD card also uses a newer PCIe 6.0 x16 interface versus PCIe 4.0 x16 on the NVIDIA card.

The AMD card has a 2 nm process node versus 5 nm on the NVIDIA card, and a larger die at 2990 mm² versus 609 mm². The transistor count is 320,000 million versus 76,300 million. The NVIDIA card has a higher transistor density at 125.3M per mm² versus 107.0M per mm². The AMD card has a lower boost clock at 2400 MHz versus 2460 MHz on the NVIDIA card, but a higher base clock at 1000 MHz versus 975 MHz.

The Verdict

The database presents two cards with fundamentally different design targets. The AMD Instinct MI455X is a compute-oriented accelerator with massive memory capacity, extremely high FP32 throughput, and no display outputs or graphics API support. The NVIDIA RTX 5880 Ada Generation is a workstation graphics card with display outputs, full graphics API support, and dedicated RT and tensor cores.

For applications that depend on measured graphics performance, the NVIDIA RTX 5880 Ada Generation is the only card with recorded benchmark data. Its percentile rank of 85 versus 50 for the AMD card reflects the availability of measured results. The NVIDIA card has a production status of Active, while the AMD card has no recorded production status. The NVIDIA card's release date of 2024-01-04 is earlier than the AMD card's 2026-07-22.

For applications that depend on raw compute specifications, the AMD Instinct MI455X shows higher numbers across FP32 performance, memory capacity, memory bandwidth, shading units, and texture rate. Its 2300 W TDP and 2700 W suggested PSU indicate a power-hungry design intended for data center deployments rather than desktop workstations. The NVIDIA card's 285 W TDP and 600 W suggested PSU make it far more modest in power requirements.

The data indicates that the RTX 5880 Ada Generation is the appropriate choice for graphics workstations requiring display output, ray tracing, tensor operations, and established API support. The MI455X is positioned for compute workloads where memory capacity and FP32 throughput are the primary metrics. The lack of benchmark data for the AMD card means its real-world performance cannot be verified from the database, while the NVIDIA card has a complete set of recorded results.