AMD Instinct MI308X vs AMD Radeon RX 7700 Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the AMD Instinct MI308X and the AMD Radeon RX 7700. The Instinct MI308X has no recorded benchmark scores, an average benchmark score of 0, and a percentile rank of 50 among all GPUs. The Radeon RX 7700, by contrast, has a full suite of recorded tests and an average benchmark score of 15852, placing it in the 58th percentile.

For the Radeon RX 7700, the strongest recorded result is in Geekbench OpenCL with a score of 106028. The PassMark G3D score of 20974 shows solid rasterization performance, while the PassMark GPU Compute score of 10963 indicates moderate compute throughput. DirectX-specific tests show scores of 92 for DirectX 10, 186 for DirectX 11, 96 for DirectX 12, and 261 for DirectX 9. The 3DMark Steel Nomad DX12 score of 2865 and PassMark G2D score of 1206 complete the picture.

Since the MI308X has no benchmark entries, the recorded data cannot produce a comparative performance analysis. The nearest rivals for the RX 7700, however, provide context for its standing. The RX 7700 sits 0.1% behind the AMD Radeon R9 370X (average score 15862), 1% behind the AMD Radeon RX 9060 (average score 16014), 1.1% ahead of the AMD Radeon Pro W5500 (average score 15679), and 1.7% behind the NVIDIA GeForce RTX 3060 Ti (average score 16129). These deltas are all within a narrow band, indicating the RX 7700 performs in a tight competitive cluster.

Architecture Differences

The Instinct MI308X uses the Aqua Vanjaram chip built on CDNA 3.0 architecture, fabricated on a 5 nm process at TSMC. It packs 153,000 million transistors into a 1017 mm² die, yielding a transistor density of 150.4 million per square millimeter. The Radeon RX 7700 uses the Navi 32 chip on RDNA 3.0 architecture, also on a 5 nm TSMC process, but with 28,100 million transistors on a 346 mm² die, giving a density of 81.2 million per square millimeter. The MI308X thus has roughly 5.4 times the transistor count and nearly three times the die area.

The MI308X is an OAM module with no display outputs, no power connectors, and no DirectX, OpenGL, or Vulkan API support. The RX 7700 is a dual-slot card with 2x 8-pin power connectors, a PCIe 4.0 x16 interface, and full API support including DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7700 also features 40 ray tracing cores, a capability the MI308X does not list.

Memory subsystems diverge sharply. The MI308X carries 192 GB of HBM3 on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The RX 7700 has 16 GB of GDDR6 on a 256-bit bus, with 624.1 GB/s bandwidth. Clock speeds also differ: the MI308X runs at a 1000 MHz base and 2100 MHz boost, while the RX 7700 runs at 1900 MHz base, 2041 MHz game, and 2459 MHz boost. The MI308X has 19456 shading units and 1216 TMUs, but records zero ROPs and zero pixel rate. The RX 7700 has 2560 shading units, 160 TMUs, 96 ROPs, and a pixel rate of 236.1 GPixel/s.

Where Each One Wins

Given the absence of benchmarks for the MI308X, the only recorded wins belong to the RX 7700. The RX 7700 shows a clear advantage in any scenario requiring display output, as the MI308X has no outputs at all. The RX 7700 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it compatible with gaming and consumer graphics workloads. The MI308X lists N/A for all graphics APIs, so it cannot run standard game or consumer graphics applications.

The MI308X wins decisively on raw compute specifications. Its FP32 throughput of 81.72 TFLOPS and FP16 throughput of 81.72 TFLOPS (1:1) dwarf the RX 7700's 25.18 TFLOPS in both precision formats. The texture rate of 2,553.6 GTexel/s for the MI308X compares to 393.4 GTexel/s for the RX 7700, a 6.5-fold difference. Memory bandwidth of 5.32 TB/s versus 624.1 GB/s represents an 8.5-fold advantage for the MI308X.

The RX 7700 wins on efficiency and practicality. Its 200 W TDP versus 750 W for the MI308X means far lower power draw. The suggested PSU of 550 W for the RX 7700 versus 1150 W for the MI308X reflects that gap. The RX 7700 is a dual-slot card measuring 267 mm in length, 135 mm in height, and 50 mm in width, while the MI308X is an OAM module with no listed dimensions. The RX 7700 also has an active production status, while the MI308X lists none.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Instinct MI308X delivers 81.72 TFLOPS of FP32, compared to 25.18 TFLOPS for the AMD Radeon RX 7700. The MI308X has a 3.2-fold advantage in single-precision throughput.

Q: Does the Radeon RX 7700 support ray tracing?

A: Yes, the RX 7700 includes 40 ray tracing cores. The Instinct MI308X does not list any ray tracing cores in the database.

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

A: The MI308X has 192 GB of HBM3 memory, while the RX 7700 has 16 GB of GDDR6. The MI308X also has a much wider 8192-bit bus versus 256-bit for the RX 7700, and 5.32 TB/s bandwidth versus 624.1 GB/s.

Q: Can the Instinct MI308X output video to a display?

A: No, the MI308X has no display outputs. The RX 7700 provides 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C outputs.

Q: What is the TDP of each card?

A: The MI308X has a TDP of 750 W with a suggested PSU of 1150 W. The RX 7700 has a TDP of 200 W with a suggested PSU of 550 W.

Q: How does the RX 7700 perform against its nearest rivals?

A: The RX 7700 scores 0.1% below the R9 370X, 1% below the RX 9060, 1.1% above the Pro W5500, and 1.7% below the RTX 3060 Ti. Its average benchmark score of 15852 places it in the 58th percentile of all GPUs.

The Verdict

The recorded data presents two radically different products with no overlapping benchmark results. The AMD Instinct MI308X is a compute accelerator with massive memory (192 GB HBM3), enormous bandwidth (5.32 TB/s), and high FP32/FP16 throughput (81.72 TFLOPS each). It has no display outputs, no graphics API support, no ROPs, and a 750 W TDP. This is a server or datacenter part aimed at workloads that need extreme memory capacity and bandwidth.

The AMD Radeon RX 7700 is a consumer graphics card. It offers full API support, display outputs, 40 ray tracing cores, 96 ROPs, and a 200 W TDP. Its benchmark performance sits within 1.7% of the RTX 3060 Ti and within 1.1% of the Pro W5500, indicating a mid-range positioning. The RX 7700's 16 GB of GDDR6 and 624.1 GB/s bandwidth suit gaming and general graphics use.

Who should pick which comes down to workload type. For machine learning training, scientific simulation, or any task requiring massive memory pools and raw compute, the MI308X is the only choice that fits the data. For gaming, desktop graphics, video output, or any consumer application, the RX 7700 is the functional option, and the only one with recorded benchmark scores to validate its performance. There is no overlap in capability: the MI308X cannot display an image, and the RX 7700 cannot match the MI308X's compute or memory throughput. The data supports a clean split between compute acceleration and consumer graphics.

Specification Differences

| Specification | AMD Instinct MI308X | AMD Radeon RX 7700 |

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

| Architecture | CDNA 3.0 | RDNA 3.0 |

| Chip | Aqua Vanjaram | Navi 32 |

| Process Node | 5 nm | 5 nm |

| Transistors | 153,000 million | 28,100 million |

| Die Size | 1017 mm² | 346 mm² |

| Transistor Density | 150.4M / mm² | 81.2M / mm² |

| Base Clock | 1000 MHz | 1900 MHz |

| Boost Clock | 2100 MHz | 2459 MHz |

| Game Clock | N/A | 2041 MHz |

| Memory Size | 192 GB | 16 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 8192 bit | 256 bit |

| Memory Bandwidth | 5.32 TB/s | 624.1 GB/s |

| Shading Units | 19456 | 2560 |

| TMUs | 1216 | 160 |

| ROPs | 0 | 96 |

| Ray Tracing Cores | N/A | 40 |

| Pixel Rate | 0 MPixel/s | 236.1 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 393.4 GTexel/s |

| FP32 | 81.72 TFLOPS | 25.18 TFLOPS |

| FP16 | 81.72 TFLOPS (1:1) | 25.18 TFLOPS (1:1) |

| TDP | 750 W | 200 W |

| Slot Width | OAM Module | Dual-slot |

| Power Connectors | None | 2x 8-pin |

| Suggested PSU | 1150 W | 550 W |

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

| Display Outputs | No outputs | 1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C |

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

| OpenGL Support | N/A | 4.6 |

| Vulkan Support | N/A | 1.4 |

| Dimensions | Not listed | 267 mm x 135 mm x 50 mm |

| Release Date | 2023-12-05 | 2025-09-17 |

| Production Status | Not listed | Active |

| Predecessor | Radeon Instinct | Navi II |

| Successor | Not listed | Navi IV |