AMD Instinct MI300A vs NVIDIA RTX 5880 Ada Generation Comparison

Head-to-Head Benchmarks

The recorded data for the AMD Instinct MI300A and the NVIDIA RTX 5880 Ada Generation presents an unusual comparison, as the MI300A has no benchmark entries in the database, while the RTX 5880 has eight recorded tests. The MI300A's average benchmark score is listed as 0, and its percentile versus all GPUs is 50. The RTX 5880, in contrast, posts an average benchmark score of 45,972 and sits at the 85th percentile, indicating that the NVIDIA part outperforms a significant majority of all recorded GPUs.

The RTX 5880's benchmark results show a wide range of performance depending on the test type. In compute-oriented workloads, the GPU delivers a Geekbench OpenCL score of 326,898. The Passmark GPU Compute test yields a score of 14,208. For graphics-specific tests, the Passmark G3D score reaches 25,096, while the G2D score is 777. DirectX results vary considerably: DirectX 9 returns 335, DirectX 10 returns 167, DirectX 11 returns 228, and DirectX 12 returns 70. These figures indicate that the RTX 5880 is substantially stronger in OpenCL compute and G3D rendering than in legacy DirectX rasterization tasks.

The MI300A has no measurable benchmark scores in the database, meaning direct numeric comparisons between the two cards cannot be quantified. However, the MI300A's raw specifications suggest a different performance profile. Its FP32 output is listed at 61.29 TFLOPS, while the RTX 5880 achieves 69.27 TFLOPS. The MI300A also has a higher texture rate at 1,915.2 GTexel/s, compared to the RTX 5880's 1,082.4 GTexel/s. The RTX 5880 counters with a pixel rate of 433.0 GPixel/s, whereas the MI300A reports 0 MPixel/s, reflecting its lack of ROPs and display outputs.

The MI300A's memory subsystem is far larger: 128 GB of HBM3 on an 8192-bit bus delivers 5.32 TB/s of bandwidth. The RTX 5880 uses 48 GB of GDDR6 on a 384-bit bus, yielding 864.0 GB/s. This 5.32 TB/s versus 864.0 GB/s gap suggests the MI300A is designed for memory-bandwidth-bound workloads, while the RTX 5880 targets more conventional graphics and workstation tasks.

The Verdict

The data clearly separates these two accelerators by intended use case. The RTX 5880 Ada Generation has recorded benchmark scores, an 85th percentile ranking, and an average score of 45,972. Its nearest rivals in the database include the NVIDIA RTX A2000 (average score 46,043, delta -0.2%), the Intel Arc A730M (45,592, delta 0.8%), the AMD Radeon Pro 5500 XT (45,384, delta 1.3%), and the AMD Radeon RX 5600M (46,601, delta -1.4%). These deltas show the RTX 5880 sits within a tight cluster of mid-range GPUs, slightly behind the RX 5600M and RTX A2000, and slightly ahead of the Arc A730M and Radeon Pro 5500 XT.

The MI300A, with no benchmarks, a 0 average score, and a 50th percentile, cannot be ranked against those rivals. Its 128 GB memory and 5.32 TB/s bandwidth indicate a server or accelerator role, not a desktop graphics card. The RTX 5880, with 4x DisplayPort 1.4a outputs, a dual-slot form factor, and a 285 W TDP, is a workstation GPU suited for rendering, simulation, and AI inference at a desk. The MI300A, with no display outputs, an OAM Module slot width, and a 750 W TDP, is a compute accelerator for dense HPC or data center deployments.

For users selecting between these two, the choice is driven by workload compatibility. The RTX 5880 delivers verified performance in existing benchmark suites, supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and includes 110 RT cores and 440 tensor cores. The MI300A offers no API support, no RT or tensor core counts, and no benchmark scores, making it unverifiable in standard consumer benchmarks. The RTX 5880 is the only one with measurable data, and that data confirms it as a competent workstation part, albeit one closely matched by several lower-profile rivals.

Architecture Differences

The MI300A is built on AMD's CDNA 3.0 architecture, using the Aqua Vanjaram chip. The RTX 5880 uses NVIDIA's Ada Lovelace architecture, built on the AD102 chip. Both are fabricated on a 5 nm process at TSMC, but the transistor counts diverge sharply. The MI300A integrates 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million per mm². The RTX 5880 has 76,300 million transistors on a 609 mm² die, for a density of 125.3 million per mm². The MI300A packs nearly double the transistors into a 67% larger die, reflecting its focus on massive memory controllers and compute units.

The MI300A has 14,592 shading units and 912 texture mapping units, but 0 ROPs and no RT or tensor cores listed. The RTX 5880 has 14,080 shading units, 440 TMUs, 176 ROPs, 110 RT cores, and 440 tensor cores. The MI300A's lack of ROPs and display outputs confirms it is not a rasterization part. The RTX 5880's ROP count and RT/tensor core presence make it a full-featured graphics and compute accelerator.

Memory architecture differs fundamentally. The MI300A uses HBM3 with a 8192-bit bus and 1300 MHz clock, delivering 5.32 TB/s. The RTX 5880 uses GDDR6 with a 384-bit bus and 2250 MHz clock, delivering 864.0 GB/s. The MI300A's memory clock is listed as 1300 MHz with 5.2 Gbps effective, while the RTX 5880 runs at 2250 MHz with 18 Gbps effective. The MI300A's bus width is over 21 times wider, which is the primary reason for its bandwidth advantage.

The MI300A reports no API support for DirectX, OpenGL, or Vulkan. The RTX 5880 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This difference is consistent with the MI300A's role as a compute-only accelerator, while the RTX 5880 serves as a workstation GPU with full graphics stack support.

Specification Differences

Clock speeds differ: the MI300A has a base clock of 1000 MHz and a boost of 2100 MHz, while the RTX 5880 has a base of 975 MHz and a boost of 2460 MHz. The RTX 5880's higher boost clock contributes to its higher FP32 throughput of 69.27 TFLOPS versus 61.29 TFLOPS for the MI300A. The RTX 5880 also lists FP16 at 69.27 TFLOPS (1:1), while the MI300A lists no FP16 figure.

Memory capacity and type differ: 128 GB HBM3 for the MI300A versus 48 GB GDDR6 for the RTX 5880. Bus width is 8192 bit versus 384 bit. Bandwidth is 5.32 TB/s versus 864.0 GB/s. The MI300A's pixel rate is 0 MPixel/s, while the RTX 5880 achieves 433.0 GPixel/s. Texture rates are 1,915.2 GTexel/s versus 1,082.4 GTexel/s.

Power and physical specifications diverge: the MI300A has a 750 W TDP, requires a 1150 W suggested PSU, uses an OAM Module slot, and has no power connectors. The RTX 5880 has a 285 W TDP, a 600 W suggested PSU, a dual-slot form factor, and a single 16-pin power connector. The MI300A measures no length or height, while the RTX 5880 is 267 mm long and 112 mm tall. The MI300A has no display outputs; the RTX 5880 has 4x DisplayPort 1.4a.

Bus interface differs: the MI300A uses PCIe 5.0 x16, while the RTX 5880 uses PCIe 4.0 x16. Release dates are close: the MI300A launched on December 5, 2023, and the RTX 5880 on January 4, 2024. The MI300A's predecessor is Radeon Instinct, with no successor listed. The RTX 5880's predecessor is Workstation Ampere, and its successor is Blackwell PRO W. The RTX 5880 has an active production status; the MI300A's status is not recorded.

FAQ

Q: Which GPU has higher FP32 performance?

A: The NVIDIA RTX 5880 Ada Generation has higher FP32 throughput at 69.27 TFLOPS, compared to the AMD Instinct MI300A's 61.29 TFLOPS.

Q: How much memory bandwidth does each card provide?

A: The MI300A delivers 5.32 TB/s via HBM3 on an 8192-bit bus. The RTX 5880 delivers 864.0 GB/s via GDDR6 on a 384-bit bus.

Q: What are the benchmark scores for the MI300A?

A: The MI300A has no recorded benchmark scores in the database. Its average benchmark score is 0, and its percentile versus all GPUs is 50.

Q: What is the RTX 5880's closest rival in the database?

A: The closest rival is the NVIDIA RTX A2000, with an average score of 46,043 and a delta of -0.2% relative to the RTX 5880's 45,972.

Q: Does the MI300A support display outputs?

A: No. The MI300A has no display outputs, while the RTX 5880 has 4x DisplayPort 1.4a.

Q: What is the TDP of each card?

A: The MI300A has a 750 W TDP, and the RTX 5880 has a 285 W TDP. The suggested PSU ratings are 1150 W and 600 W, respectively.