AMD Instinct MI300 vs AMD Radeon RX 9050 OEM Comparison

Where Each One Wins

The benchmark data splits these two AMD accelerators into entirely separate use cases. The AMD Instinct MI300 is a data center compute accelerator with no display outputs, no graphics APIs, and a pixel rate of 0 MPixel/s. Its recorded specifications target high-throughput compute workloads: 47.87 TFLOPS FP32, 5.32 TB/s memory bandwidth, and 128 GB of HBM3. The AMD Radeon RX 9050 OEM, by contrast, is a Radeon RX 9000 series graphics card with 1x HDMI 2.1b and 2x DisplayPort 2.1a outputs, DirectX 12 Ultimate (12_2) support, OpenGL 4.6, and Vulkan 1.4. It delivers 10.65 TFLOPS FP32, 166.4 GPixel/s pixel rate, and 166.4 GTexel/s texture rate.

The MI300 wins exclusively in compute throughput and memory capacity. Its FP32 output is 4.5 times the RX 9050 OEM's figure. Texture rate is 9 times higher at 1,496.0 GTexel/s versus 166.4 GTexel/s. Memory bandwidth is 37 times higher: 5.32 TB/s versus 144.0 GB/s. The RX 9050 OEM wins in every graphics-oriented metric. It has 64 ROPs while the MI300 has 0 ROPs. It supports modern graphics APIs while the MI300 lists N/A for DirectX, OpenGL, and Vulkan. The RX 9050 OEM also has 16 ray tracing cores; the MI300 has none recorded.

Clock behavior favors the RX 9050 OEM. Its base clock is 1330 MHz and boost clock is 2600 MHz, with a game clock of 1920 MHz. The MI300 runs at 1000 MHz base and 1700 MHz boost. The RX 9050 OEM achieves higher pixel throughput because it actually has rasterization hardware. The MI300's pixel rate is zero. In short, the MI300 is a compute accelerator, while the RX 9050 OEM is a graphics card. Neither device competes in the other's primary domain.

Architecture Differences

The two chips share a manufacturer and foundry but diverge in nearly every architectural decision. The MI300 uses the Aqua Vanjaram chip, built on CDNA 3.0 architecture, on a 5 nm TSMC process. It packs 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4M per mm². The RX 9050 OEM uses the Navi 44 chip, built on RDNA 4.0 architecture, on a 4 nm TSMC process. It contains 29,700 million transistors on a 199 mm² die, with a density of 149.2M per mm². The MI300's die is 5.1 times larger and holds 5.2 times more transistors, yet the density figures are nearly identical, indicating similar transistor sizing strategies despite the process node difference.

Memory architecture represents the widest gap. The MI300 uses 128 GB of HBM3 across an 8192-bit bus, with memory clocked at 1300 MHz (5.2 Gbps effective). The RX 9050 OEM uses 4 GB of GDDR6 across a 64-bit bus, with memory at 2250 MHz (18 Gbps effective). The MI300's bus width is 128 times wider. Effective memory speed is 3.5 times higher on the RX 9050 OEM, but the MI300's bandwidth advantage comes from the enormous bus and HBM3 stacking.

Shader and texture hardware differ substantially. The MI300 has 14,080 shading units and 880 TMUs. The RX 9050 OEM has 1,024 shading units and 64 TMUs. The MI300 leads by 13.8 times in shading units and 13.8 times in TMUs. The RX 9050 OEM has 64 ROPs to the MI300's 0, and 16 ray tracing cores to the MI300's null value. Power delivery reflects the performance gap: the MI300 consumes 600 W TDP with 2x 8-pin connectors and a 1000 W suggested PSU, while the RX 9050 OEM runs at 92 W TDP with 1x 8-pin and a 250 W suggested PSU.

Physical dimensions also differ. The MI300 measures 267 mm in length and 111 mm in height. The RX 9050 OEM has no recorded length or height but is listed as dual-slot. Both use PCIe 5.0 x16. Release dates place the MI300 on 2023-01-03 and the RX 9050 OEM on 2026-07-27. The RX 9050 OEM is marked as Active production, while the MI300 has no production status recorded. The MI300's predecessor is Radeon Instinct; the RX 9050 OEM's predecessor is Navi III.

FAQ

Q: Which card has more memory bandwidth?

A: The AMD Instinct MI300 has 5.32 TB/s bandwidth from 128 GB of HBM3 on an 8192-bit bus. The AMD Radeon RX 9050 OEM has 144.0 GB/s from 4 GB of GDDR6 on a 64-bit bus. The MI300's bandwidth is 37 times higher.

Q: Can the MI300 output video to a display?

A: No. The MI300 lists "No outputs" for display outputs, while the RX 9050 OEM provides 1x HDMI 2.1b and 2x DisplayPort 2.1a.

Q: Which GPU supports ray tracing?

A: The RX 9050 OEM includes 16 ray tracing cores. The MI300 has no ray tracing cores recorded.

Q: What are the FP32 performance figures?

A: The MI300 delivers 47.87 TFLOPS FP32. The RX 9050 OEM delivers 10.65 TFLOPS FP32. The MI300 is 4.5 times faster in raw FP32 compute.

Q: How do power requirements compare?

A: The MI300 has a 600 W TDP, requires 2x 8-pin power connectors, and lists a 1000 W suggested PSU. The RX 9050 OEM has a 92 W TDP, requires 1x 8-pin, and lists a 250 W suggested PSU.

Q: Which process node is smaller?

A: The RX 9050 OEM uses a 4 nm TSMC process. The MI300 uses a 5 nm TSMC process. The RX 9050 OEM's node is smaller, though transistor densities are similar at 149.2M per mm² versus 150.4M per mm².

Specification Differences

The two devices share only their manufacturer (AMD), foundry (TSMC), bus interface (PCIe 5.0 x16), and lack of a launch MSRP in the database. Every other field differs.

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

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

| Chip | Aqua Vanjaram | Navi 44 |

| Architecture | CDNA 3.0 | RDNA 4.0 |

| 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 | 4 GB |

| Memory type | HBM3 | GDDR6 |

| Memory bus width | 8192 bit | 64 bit |

| Memory bandwidth | 5.32 TB/s | 144.0 GB/s |

| Shading units | 14,080 | 1,024 |

| TMUs | 880 | 64 |

| ROPs | 0 | 64 |

| Ray tracing 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 |

| Slot width | None | Dual-slot |

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

| Suggested PSU | 1000 W | 250 W |

| 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 |

| Length | 267 mm | None |

| Height | 111 mm | None |

| Production status | None | Active |

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

| Predecessor | Radeon Instinct | Navi III |

The MI300 has no game clock, no slot width, no production status, and no successor. The RX 9050 OEM has no dimensions recorded and no successor.

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark results between these two devices. Each has zero benchmark scores, zero wins, and an identical 50th percentile ranking among all GPUs. The average benchmark score for both is 0. The nearest rivals lists are empty for both entries. This means the comparison must rely entirely on recorded specifications rather than measured performance data.

The largest compute gap appears in memory bandwidth. The MI300's 5.32 TB/s exceeds the RX 9050 OEM's 144.0 GB/s by a factor of 37. This is the single most decisive specification difference. The MI300's 8192-bit bus carries 128 times the data width of the RX 9050 OEM's 64-bit bus. HBM3 versus GDDR6 explains the rest of the bandwidth delta.

FP32 throughput shows a 4.5 times advantage for the MI300: 47.87 TFLOPS versus 10.65 TFLOPS. FP16 follows the same ratio at 47.87 TFLOPS versus 10.65 TFLOPS, with both running at 1:1 ratio. Texture rate widens to 9 times: 1,496.0 GTexel/s versus 166.4 GTexel/s. The MI300's 880 TMUs versus 64 TMUs drive that difference.

The RX 9050 OEM wins decisively in graphics output. Pixel rate is 166.4 GPixel/s versus 0 MPixel/s. The RX 9050 OEM has 64 ROPs; the MI300 has none. The RX 9050 OEM has 16 ray tracing cores; the MI300 has none recorded. API support is exclusive to the RX 9050 OEM: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI300 lists N/A for all three.

Clock speeds favor the RX 9050 OEM. Its base clock of 1330 MHz is 1.33 times the MI300's 1000 MHz. Boost clock of 2600 MHz is 1.53 times the MI300's 1700 MHz. The RX 9050 OEM also has a game clock of 1920 MHz, which the MI300 lacks entirely. Memory clock is higher on the RX 9050 OEM at 2250 MHz versus 1300 MHz, and effective speed is 18 Gbps versus 5.2 Gbps.

Power efficiency strongly favors the RX 9050 OEM. It delivers 10.65 TFLOPS at 92 W TDP, while the MI300 delivers 47.87 TFLOPS at 600 W TDP. The MI300 produces 79.8 TFLOPS per kilowatt. The RX 9050 OEM produces 115.8 TFLOPS per kilowatt, a 1.45 times efficiency advantage in FP32 per watt. The RX 9050 OEM also requires a 250 W suggested PSU versus 1000 W, and uses a single 8-pin connector versus two.

Transistor density is nearly identical: 150.4M per mm² for the MI300 and 149.2M per mm² for the RX 9050 OEM. The MI300 achieves this on 5 nm, while the RX 9050 OEM achieves it on 4 nm. The MI300's die is 5.1 times larger in area and its transistor count is 5.2 times higher, matching the area ratio closely.

The Verdict

The recorded data supports a clear split. The AMD Instinct MI300 is the compute leader. It delivers 4.5 times the FP32 throughput, 9 times the texture rate, and 37 times the memory bandwidth of the RX 9050 OEM. Its 128 GB HBM3 pool with 5.32 TB/s bandwidth and 8192-bit bus suits memory-bound compute workloads. Its 14,080 shading units and 880 TMUs provide massive parallel throughput. Its 600 W TDP and 1000 W suggested PSU indicate a device designed for sustained, high-intensity compute tasks in a data center environment.

The AMD Radeon RX 9050 OEM is the graphics leader. It is the only one of the two with display outputs, graphics API support, raster operations hardware, and ray tracing cores. Its 166.4 GPixel/s pixel rate and 64 ROPs enable actual rendering. Its 16 ray tracing cores support hardware-accelerated ray tracing. Its DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support make it usable in gaming and workstation graphics contexts. Its 92 W TDP and 250 W suggested PSU allow deployment in standard desktop systems.

The MI300 cannot function as a graphics card. It has no display outputs, no graphics APIs, and no ROPs. The RX 9050 OEM cannot match the MI300 in compute throughput, memory capacity, or bandwidth. The MI300's 47.87 TFLOPS FP32 and 5.32 TB/s bandwidth place it in an entirely different performance class from the RX 9050 OEM's 10.65 TFLOPS and 144.0 GB/s.

Neither device has benchmark scores in the database, so the verdict rests on specification analysis. The MI300's release date of 2023-01-03 and the RX 9050 OEM's release date of 2026-07-27 indicate different product generations. The MI300 belongs to the Instinct (MIx) generation with a Radeon Instinct predecessor. The RX 9050 OEM belongs to the Radeon RX 9000 series with a Navi III predecessor. The MI300 uses CDNA 3.0; the RX 9050 OEM uses RDNA 4.0. These are different architectures for different markets.

For compute acceleration, the MI300 is the choice. For graphics rendering, the RX 9050 OEM is the only option. The RX 9050 OEM's superior power efficiency in FP32 per watt (115.8 versus 79.8 TFLOPS per kilowatt) and smaller 4 nm process node are relevant only for graphics workloads, since the MI300 lacks the hardware to perform those tasks. The MI300's larger die, higher transistor count, and wider memory bus serve its compute purpose. The data shows no overlap in their intended functions.