AMD Instinct MI325X vs AMD Radeon RX 7600M XT Comparison

The Verdict

The AMD Instinct MI325X and AMD Radeon RX 7600M XT serve entirely different purposes, and the recorded data confirms they should never be cross-shopped. The MI325X is a compute accelerator with no display outputs, no graphics API support, and a 1000 W thermal envelope. The RX 7600M XT is a mobile graphics processor with full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support, running at 120 W.

The MI325X delivers massive raw compute resources: 19,456 shading units, 1,216 texture mapping units, and an FP32 throughput of 81.72 TFLOPS. The RX 7600M XT counters with 2,048 shading units, 128 TMUs, and 20.23 TFLOPS FP32. For AI training, scientific simulation, or any workload that can utilize 256 GB of HBM3e memory with 6.14 TB/s of bandwidth, the MI325X is the only viable choice. For gaming, rendering, or any consumer graphics task requiring a display output, the RX 7600M XT is the only option that functions at all.

The percentile data places the RX 7600M XT at the 52nd percentile among all GPUs, with an average benchmark score of 12,710. The MI325X has no recorded benchmarks and sits at the 50th percentile, meaning its compute capabilities are not measured by the same consumer-oriented tests. The database shows zero head-to-head benchmark wins for either part, confirming they operate in separate performance domains.

Architecture Differences

The MI325X uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, fabricated on a 5 nm TSMC process. The RX 7600M XT uses RDNA 3.0 on the Navi 33 chip, built on a 6 nm TSMC process. The transistor counts differ dramatically: the MI325X packs 153,000 million transistors on a 1017 mm² die, while the RX 7600M XT contains 13,300 million transistors on a 204 mm² die. Transistor density follows: 150.4 million per mm² for the MI325X versus 65.2 million per mm² for the RX 7600M XT.

Memory architecture diverges completely. The MI325X uses 256 GB of HBM3e across an 8192-bit bus, delivering 6.14 TB/s bandwidth. The RX 7600M XT uses 8 GB of GDDR6 across a 128-bit bus, providing 288.0 GB/s. Clock behavior also differs: the MI325X runs at a 1000 MHz base and 2100 MHz boost, while the RX 7600M XT runs at 1280 MHz base, 2023 MHz game clock, and 2469 MHz boost.

The MI325X reports zero pixel rate and zero ROPs, indicating it does not rasterize graphics. Its texture rate is 2,553.6 GTexel/s. The RX 7600M XT has 64 ROPs, a pixel rate of 158.0 GPixel/s, and a texture rate of 316.0 GTexel/s. The MI325X has no API support (DirectX, OpenGL, and Vulkan all marked N/A), while the RX 7600M XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7600M XT also includes 32 ray tracing cores; the MI325X lists none.

The MI325X uses an OAM module slot with no power connectors and requires a 1400 W suggested PSU. The RX 7600M XT is an IGP with no power connectors and no suggested PSU listed. The MI325X has no display outputs; the RX 7600M XT outputs are portable device dependent. Bus interfaces differ as well: PCIe 5.0 x16 for the MI325X versus PCIe 4.0 x16 for the RX 7600M XT.

FAQ

Q: Which GPU has higher FP32 compute throughput?

A: The MI325X delivers 81.72 TFLOPS FP32, which is 4.04 times the RX 7600M XT's 20.23 TFLOPS. The MI325X also matches this figure for FP16 at 81.72 TFLOPS (1:1), while the RX 7600M XT provides 40.45 TFLOPS FP16 (2:1).

Q: Can the MI325X output video to a display?

A: No. The MI325X has no display outputs and no graphics API support (DirectX, OpenGL, and Vulkan are all listed as N/A). The RX 7600M XT supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, with display outputs dependent on the portable device.

Q: How do the memory capacities compare?

A: The MI325X has 256 GB of HBM3e memory, 32 times the RX 7600M XT's 8 GB of GDDR6. Memory bandwidth is 6.14 TB/s for the MI325X versus 288.0 GB/s for the RX 7600M XT, a 21.3 times difference.

Q: What is the thermal design power of each GPU?

A: The MI325X has a TDP of 1000 W and a suggested PSU of 1400 W. The RX 7600M XT has a TDP of 120 W with no suggested PSU listed.

Q: Which GPU has more shading units and texture mapping units?

A: The MI325X has 19,456 shading units and 1,216 TMUs. The RX 7600M XT has 2,048 shading units and 128 TMUs. The MI325X has 9.5 times the shading units and 9.5 times the TMUs.

Q: How does the RX 7600M XT compare to its nearest rivals?

A: The RX 7600M XT's average benchmark score is 12,710. It trails the NVIDIA GeForce GTX 670 by 0.5% (12,773) and the NVIDIA GeForce GTX 590 by 0.9% (12,830). It leads the NVIDIA Tesla K20Xm by 0.7% (12,625) and the AMD Radeon Pro 455 by 0.9% (12,831).

Specification Differences

| Specification | AMD Instinct MI325X | AMD Radeon RX 7600M XT |

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

| Architecture | CDNA 3.0 | RDNA 3.0 |

| Chip | Aqua Vanjaram | Navi 33 |

| Process Node | 5 nm | 6 nm |

| Transistors | 153,000 million | 13,300 million |

| Die Size | 1017 mm² | 204 mm² |

| Transistor Density | 150.4M / mm² | 65.2M / mm² |

| Base Clock | 1000 MHz | 1280 MHz |

| Boost Clock | 2100 MHz | 2469 MHz |

| Game Clock | None | 2023 MHz |

| Memory Clock | 1500 MHz, 6 Gbps effective | 2250 MHz, 18 Gbps effective |

| Memory Size | 256 GB | 8 GB |

| Memory Type | HBM3e | GDDR6 |

| Memory Bus Width | 8192 bit | 128 bit |

| Memory Bandwidth | 6.14 TB/s | 288.0 GB/s |

| Shading Units | 19,456 | 2,048 |

| TMUs | 1,216 | 128 |

| ROPs | 0 | 64 |

| Ray Tracing Cores | None | 32 |

| Pixel Rate | 0 MPixel/s | 158.0 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 316.0 GTexel/s |

| FP32 | 81.72 TFLOPS | 20.23 TFLOPS |

| FP16 | 81.72 TFLOPS (1:1) | 40.45 TFLOPS (2:1) |

| TDP | 1000 W | 120 W |

| Slot Width | OAM Module | IGP |

| Power Connectors | None | None |

| Suggested PSU | 1400 W | None |

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

| Display Outputs | No outputs | Portable Device Dependent |

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Production Status | None listed | Active |

| Release Date | 2024-10-09 | 2023-01-03 |

| Predecessor | Radeon Instinct | Polaris Mobile |

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between the MI325X and the RX 7600M XT. The MI325X has zero recorded benchmark scores. The RX 7600M XT has ten recorded benchmarks across three test suites.

The RX 7600M XT's strongest result comes from Geekbench OpenCL with a score of 74,869. Its Geekbench Vulkan score is 27,793. In Passmark tests, the G3D score reaches 13,907, GPU compute scores 7,140, and G2D scores 894. DirectX 9 yields 175, DirectX 11 yields 137, DirectX 10 yields 76, and DirectX 12 yields 58.

The average benchmark score for the RX 7600M XT is 12,710, placing it at the 52nd percentile among all GPUs. Its nearest rival, the NVIDIA GeForce GTX 670, averages 12,773, which is 0.5% higher. The NVIDIA Tesla K20Xm averages 12,625, 0.7% lower. The NVIDIA GeForce GTX 590 averages 12,830, 0.9% higher, and the AMD Radeon Pro 455 averages 12,831, also 0.9% higher.

The MI325X sits at the 50th percentile with an average benchmark score of zero, reflecting that no consumer benchmark data exists for it. The lack of display outputs and API support means standard graphics benchmark suites cannot run on this accelerator. The 3DMark Steel Nomad DX12 test, which scores 2,048 on the RX 7600M XT, requires DirectX 12 support that the MI325X does not provide.

The compute disparity between the two is best illustrated by the FP32 figures. The MI325X's 81.72 TFLOPS is exactly 4.04 times the RX 7600M XT's 20.23 TFLOPS. Texture throughput shows a similar ratio: the MI325X's 2,553.6 GTexel/s is 8.08 times the RX 7600M XT's 316.0 GTexel/s. The RX 7600M XT's 158.0 GPixel/s pixel rate has no equivalent on the MI325X, which reports zero.

The RX 7600M XT's nearest rivals all cluster within a narrow band around its average score. The delta percentages range from -0.9% (GeForce GTX 590 and Radeon Pro 455) to +0.7% (Tesla K20Xm). This suggests the RX 7600M XT performs at a level comparable to older high-end desktop GPUs from the GTX 600 series era, despite being a modern mobile part. The MI325X has no comparable consumer benchmark data, as its role as a compute accelerator with 256 GB of HBM3e memory and 1000 W TDP places it in a different class entirely.