AMD Instinct MI300 vs AMD Radeon RX 9050 Comparison

Where Each One Wins

The AMD Instinct MI300 and AMD Radeon RX 9050 occupy completely different positions in the AMD lineup. The MI300 is a compute accelerator built for data center workloads, while the RX 9050 is a consumer graphics card aimed at rendering and gaming. The recorded data shows zero head-to-head benchmark matches, so the comparison relies entirely on architectural specifications and workload suitability.

The MI300 wins decisively in raw compute throughput. Its FP32 output of 47.87 TFLOPS dwarfs the RX 9050's 10.65 TFLOPS, a 4.5x advantage. The texture rate tells a similar story: 1,496.0 GTexel/s versus 166.4 GTexel/s, roughly 9x higher. For FP16 workloads, the MI300 again delivers 47.87 TFLOPS with a 1:1 ratio, while the RX 9050 also achieves 10.65 TFLOPS at 1:1. Any workload that depends on massive parallel floating-point execution, such as AI training, scientific simulation, or HPC compute, belongs to the MI300.

The RX 9050 wins in graphics-specific capabilities. It is the only one of the two with ROPs, featuring 64 of them, and it delivers a pixel rate of 166.4 GPixel/s. The MI300 has zero ROPs and a pixel rate of 0 MPixel/s, meaning it cannot rasterize frames at all. The RX 9050 also brings 16 ray tracing cores, a feature entirely absent from the MI300. The MI300 lists no display outputs, while the RX 9050 provides 1x HDMI 2.1b and 2x DisplayPort 2.1a. For any task that ends with pixels on a screen, the RX 9050 is the functional choice.

Power efficiency also favors the RX 9050. Its TDP is 92 W against the MI300's 600 W. The RX 9050 suggests a 250 W power supply, while the MI300 asks for 1000 W. The RX 9050 uses a single 8-pin connector, the MI300 requires two 8-pin connectors. For deployments where power draw or thermal density matters, the RX 9050 is the lighter load.

Both cards sit at the 50th percentile among all GPUs in the database, with an average benchmark score of 0 for each, so neither has recorded performance data to separate them. The wins are therefore defined by specification, not by measured results.

Architecture Differences

The two chips share a manufacturer and foundry but diverge at nearly every architectural level. The MI300 uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, built for the Instinct (MIx) generation. The RX 9050 uses RDNA 4.0 on the Navi 44 chip, part of the Radeon RX 9000 series and the Navi IV generation. CDNA is AMD's compute-optimized architecture, while RDNA targets graphics rendering.

The process nodes differ. The MI300 is fabricated on TSMC's 5 nm process, while the RX 9050 uses a smaller 4 nm process from the same foundry. The MI300 packs 153,000 million transistors onto a 1017 mm² die, giving a transistor density of 150.4M / mm². The RX 9050 contains 29,700 million transistors on a 199 mm² die, with a density of 149.2M / mm². The density figures are nearly identical, but the MI300's die is over five times larger and holds over five times the transistor count.

Memory architecture could hardly be more different. The MI300 uses 128 GB of HBM3 on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The RX 9050 uses 8 GB of GDDR6 on a 128-bit bus, delivering 288.0 GB/s. That is an 18.5x bandwidth advantage for the MI300 and a 16x capacity advantage. The MI300's memory clock is listed as 1300 MHz with 5.2 Gbps effective, while the RX 9050 runs at 2250 MHz with 18 Gbps effective. The RX 9050's memory clock is higher, but its narrow bus cannot approach the MI300's bandwidth.

Compute unit organization follows the respective architectures. The MI300 has 14,080 shading units, 880 texture mapping units, and zero ROPs. The RX 9050 has 1,024 shading units, 64 TMUs, and 64 ROPs. The MI300 has no RT cores; the RX 9050 has 16. Neither card lists tensor cores.

The MI300 has no display outputs and no API support for DirectX, OpenGL, or Vulkan. The RX 9050 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, with 1x HDMI 2.1b and 2x DisplayPort 2.1a outputs. The MI300 is a dual-slot card measuring 267 mm in length and 111 mm in height, while the RX 9050 is a dual-slot card with no recorded dimensions.

Release timing separates them further. The MI300 launched on 2023-01-03, while the RX 9050 is dated 2026-07-27. The MI300's predecessor is Radeon Instinct, and the RX 9050's predecessor is Navi III. The RX 9050's production status is listed as Active; the MI300 has no production status recorded.

Head-to-Head Benchmarks

No head-to-head benchmark entries exist in the database, so direct measured comparisons cannot be cited. The specification differences, however, establish clear boundaries for where each part dominates.

The MI300's FP32 throughput of 47.87 TFLOPS is 4.5x the RX 9050's 10.65 TFLOPS. In FP16, the same ratio holds: 47.87 TFLOPS versus 10.65 TFLOPS, both at 1:1. Texture rate shows the widest gap: 1,496.0 GTexel/s versus 166.4 GTexel/s, an 8.99x difference. Bandwidth is the second-widest gap: 5.32 TB/s versus 288.0 GB/s, an 18.5x difference. Memory capacity is 16x larger on the MI300 at 128 GB versus 8 GB.

The RX 9050 counters in areas the MI300 simply does not implement. Its pixel rate of 166.4 GPixel/s comes from 64 ROPs, while the MI300 has zero ROPs and 0 MPixel/s. The RX 9050's 16 RT cores enable hardware ray tracing; the MI300 has no RT core count recorded. The RX 9050's boost clock reaches 2600 MHz with a game clock of 1920 MHz and a base of 1330 MHz, while the MI300 boosts to 1700 MHz from a 1000 MHz base. Clock speed is one of the few metrics where the RX 9050 leads, but it reflects the different design goals: a small, power-efficient graphics chip versus a massive compute accelerator.

The RX 9050 also leads in power economy. Its 92 W TDP is 6.5x lower than the MI300's 600 W. The suggested PSU of 250 W versus 1000 W reinforces the same point. The RX 9050's single 8-pin connector and dual-slot cooler contrast with the MI300's two 8-pin connectors and dual-slot body.

FAQ

Q: Which card is faster for compute workloads?

A: The MI300. Its FP32 and FP16 performance are both 47.87 TFLOPS, compared to 10.65 TFLOPS for the RX 9050. The MI300 also provides 5.32 TB/s of memory bandwidth versus 288.0 GB/s.

Q: Can the MI300 be used for gaming?

A: No. The MI300 has zero ROPs, a pixel rate of 0 MPixel/s, no display outputs, and no DirectX, OpenGL, or Vulkan support. The RX 9050 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Q: Which card supports ray tracing?

A: The RX 9050, with 16 ray tracing cores. The MI300 has no RT core count recorded.

Q: How much memory does each card have?

A: The MI300 has 128 GB of HBM3 on an 8192-bit bus. The RX 9050 has 8 GB of GDDR6 on a 128-bit bus.

Q: What are the power requirements?

A: The MI300 has a TDP of 600 W and suggests a 1000 W power supply with 2x 8-pin connectors. The RX 9050 has a TDP of 92 W, suggests a 250 W power supply, and uses 1x 8-pin.

Q: Which process node does each chip use?

A: The MI300 uses TSMC's 5 nm process. The RX 9050 uses TSMC's 4 nm process.

Specification Differences

| Specification | AMD Instinct MI300 | AMD Radeon RX 9050 |

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

| Architecture | CDNA 3.0 | RDNA 4.0 |

| Chip | Aqua Vanjaram | Navi 44 |

| Generation | Instinct (MIx) | Navi IV (RX 9000) |

| Process Node | 5 nm | 4 nm |

| Transistors | 153,000 million | 29,700 million |

| Die Size | 1017 mm² | 199 mm² |

| Transistor Density | 150.4M / mm² | 149.2M / mm² |

| Base Clock | 1000 MHz | 1330 MHz |

| Boost Clock | 1700 MHz | 2600 MHz |

| Game Clock | None | 1920 MHz |

| Memory Clock | 1300 MHz 5.2 Gbps effective | 2250 MHz 18 Gbps effective |

| Memory Size | 128 GB | 8 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 8192 bit | 128 bit |

| Memory Bandwidth | 5.32 TB/s | 288.0 GB/s |

| Shading Units | 14,080 | 1,024 |

| TMUs | 880 | 64 |

| ROPs | 0 | 64 |

| RT Cores | None | 16 |

| Pixel Rate | 0 MPixel/s | 166.4 GPixel/s |

| Texture Rate | 1,496.0 GTexel/s | 166.4 GTexel/s |

| FP32 | 47.87 TFLOPS | 10.65 TFLOPS |

| FP16 | 47.87 TFLOPS (1:1) | 10.65 TFLOPS (1:1) |

| TDP | 600 W | 92 W |

| Power Connectors | 2x 8-pin | 1x 8-pin |

| Suggested PSU | 1000 W | 250 W |

| Slot Width | Not recorded | Dual-slot |

| Display Outputs | No outputs | 1x HDMI 2.1b, 2x DisplayPort 2.1a |

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Dimensions | 267 mm length, 111 mm height | Not recorded |

| Release Date | 2023-01-03 | 2026-07-27 |

| Predecessor | Radeon Instinct | Navi III |

| Production Status | Not recorded | Active |