AMD Instinct MI300X vs AMD Radeon RX 7600M XT Comparison

Head-to-Head Benchmarks

The only directly comparable benchmark recorded in the database is Geekbench OpenCL, and the result is decisive. The AMD Instinct MI300X scores 317,994, while the AMD Radeon RX 7600M XT scores 74,869. This yields a delta of 324.7% in favor of the Instinct MI300X, meaning it delivers more than four times the OpenCL compute performance of the Radeon part.

The Instinct MI300X sits at the 100th percentile among all GPUs in the database, meaning no recorded GPU scores higher in this test. Its nearest rivals include the NVIDIA B200 at 345,482 (8% higher), the NVIDIA H200 NVL at 334,891 (5% higher), the NVIDIA L40S at 295,763 (7.5% lower), and the NVIDIA RTX 6000 Ada Generation at 287,237 (10.7% lower). The MI300X therefore occupies a performance tier that is competitive with the top NVIDIA accelerators, trading blows within a narrow band rather than being categorically ahead or behind.

The RX 7600M XT, by contrast, sits at the 52nd percentile. Its nearest rivals are much older or lower-tier parts: the NVIDIA GeForce GTX 670 at 12,773 (0.5% lower), the NVIDIA Tesla K20Xm at 12,625 (0.7% higher), the NVIDIA GeForce GTX 590 at 12,830 (0.9% lower), and the AMD Radeon Pro 455 at 12,831 (0.9% lower). The RX 7600M XT's average benchmark score of 12,710 places it in a completely different performance class, roughly 25 times lower than the MI300X's single recorded score.

The delta between the two is so large that the RX 7600M XT cannot be considered a competitor in raw compute throughput. The Instinct MI300X wins the only head-to-head comparison, and the database records 1 win for the MI300X and 0 wins for the RX 7600M XT. There is no benchmark in the pack where the RX 7600M XT surpasses the MI300X.

Architecture Differences

The two GPUs come from different architectural lineages within AMD. The Instinct MI300X uses CDNA 3.0, an architecture designed for compute acceleration, while the RX 7600M XT uses RDNA 3.0, an architecture aimed at graphics rendering and gaming workloads. This fundamental split explains the vast performance gap in compute benchmarks.

The MI300X is built on a 5 nm process at TSMC, using the Aqua Vanjaram chip. It packs 153,000 million transistors on a die of 1017 mm², giving a transistor density of 150.4 million per square millimeter. The RX 7600M XT uses a 6 nm process at TSMC, with the Navi 33 chip. It contains 13,300 million transistors on a 204 mm² die, resulting in a density of 65.2 million per square millimeter. The MI300X therefore has over 11 times more transistors, and appears to use a denser manufacturing node as well.

Memory configurations differ dramatically. The MI300X has 192 GB of HBM3 memory on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The RX 7600M XT has 8 GB of GDDR6 on a 128-bit bus, providing 288.0 GB/s. The MI300X has roughly 18 times more memory bandwidth, which is the single largest architectural advantage between the two.

Compute unit counts follow the same pattern. The MI300X has 19,456 shading units, 1,216 texture mapping units, and no ROPs, reflecting its compute-first design with no raster output stage. The RX 7600M XT has 2,048 shading units, 128 TMUs, and 64 ROPs, plus 32 ray tracing cores. The RX 7600M XT has pixel rate of 158.0 GPixel/s, while the MI300X has 0 MPixel/s, confirming that the latter cannot render graphics to a display. Texture rate is 2,553.6 GTexel/s for the MI300X versus 316.0 GTexel/s for the RX 7600M XT.

Clock speeds tell a different story. The MI300X has a base clock of 1000 MHz and a boost of 2100 MHz. The RX 7600M XT has a base of 1280 MHz, a boost of 2469 MHz, and a game clock of 2023 MHz. The RX 7600M XT runs at higher frequencies, but the MI300X compensates with far more compute units and memory bandwidth.

Floating point performance is where the gap becomes explicit. The MI300X delivers 81.72 TFLOPS FP32 and 81.72 TFLOPS FP16 at a 1:1 ratio. The RX 7600M XT delivers 20.23 TFLOPS FP32 and 40.45 TFLOPS FP16 at a 2:1 ratio. This means the MI300X has roughly 4 times the FP32 throughput and 2 times the FP16 throughput, though the RX 7600M XT's FP16 ratio suggests it can pack more operations per clock in half precision.

The MI300X uses a PCIe 5.0 x16 interface, while the RX 7600M XT uses PCIe 4.0 x16. The MI300X has no display outputs and no API support for DirectX, OpenGL, or Vulkan, as it is an accelerator with no graphics path. The RX 7600M XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and its display outputs are described as "Portable Device Dependent."

Where Each One Wins

The Instinct MI300X wins exclusively in compute throughput, as evidenced by the OpenCL benchmark. Its 192 GB memory pool, 5.32 TB/s bandwidth, and 81.72 TFLOPS FP32 make it suitable for large-scale workloads such as AI training, scientific simulation, and data center compute tasks. The database shows its percentile at 100, meaning no GPU in the database outperforms it in the recorded OpenCL test. The nearest rival scores are within 10.7% in either direction, indicating that the MI300X is not simply dominant but rather competitive with the top accelerators from NVIDIA.

The RX 7600M XT wins in every graphical and mobile-centric aspect. It has a pixel rate of 158.0 GPixel/s, while the MI300X has none. It supports ray tracing with 32 RT cores, while the MI300X has no RT cores listed. It has display outputs, though they are dependent on the portable device, and it supports the full graphics API stack. The RX 7600M XT also consumes 120 W, versus 750 W for the MI300X, and is an IGP form factor, meaning it is designed for integration into laptops. The MI300X is an OAM module with no power connectors and a suggested PSU of 1150 W.

The RX 7600M XT also has a higher boost clock at 2469 MHz versus 2100 MHz, and a higher base clock at 1280 MHz versus 1000 MHz. Its memory clock runs at 2250 MHz with 18 Gbps effective, while the MI300X runs at 1300 MHz with 5.2 Gbps effective. However, the MI300X's memory bus width of 8192 bit versus 128 bit completely overwhelms the clock speed advantage.

For gaming, the RX 7600M XT is the only option of the two, as the MI300X has no graphics outputs and no DirectX support. For compute, the MI300X is the only option, as the RX 7600M XT's OpenCL score is 324.7% lower and its average benchmark indicates a mid-range mobile GPU rather than a data center accelerator.

FAQ

Q: Which GPU has higher memory bandwidth?

A: The AMD Instinct MI300X has 5.32 TB/s bandwidth from 192 GB HBM3 on an 8192-bit bus. The AMD Radeon RX 7600M XT has 288.0 GB/s from 8 GB GDDR6 on a 128-bit bus.

Q: Can the Instinct MI300X render graphics or output video?

A: No. The MI300X has no display outputs and lists 0 MPixel/s pixel rate. It also has no DirectX, OpenGL, or Vulkan support in the database.

Q: What is the FP32 performance difference?

A: The MI300X delivers 81.72 TFLOPS FP32. The RX 7600M XT delivers 20.23 TFLOPS FP32. The MI300X has approximately 4 times the FP32 throughput.

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

A: The RX 7600M XT has an average benchmark score of 12,710. Its nearest rival, the NVIDIA GeForce GTX 670, scores 12,773, which is 0.5% higher. The NVIDIA Tesla K20Xm scores 12,625, which is 0.7% lower.

Q: Which GPU supports ray tracing?

A: The RX 7600M XT has 32 ray tracing cores. The MI300X has no ray tracing cores listed in the database.

Q: What is the power consumption difference?

A: The MI300X has a TDP of 750 W and a suggested PSU of 1150 W. The RX 7600M XT has a TDP of 120 W and no suggested PSU listed.

The Verdict

The data places these two GPUs in separate markets. The AMD Instinct MI300X is a data center accelerator with a 100th percentile OpenCL score, 192 GB of HBM3 memory, and 81.72 TFLOPS FP32. It has no graphics capability, no display outputs, and no consumer API support. Its nearest rivals are NVIDIA B200, H200 NVL, L40S, and RTX 6000 Ada Generation, all of which score within 10.7% of the MI300X in OpenCL. This indicates a highly competitive compute segment where the MI300X is a leading but not singular option.

The AMD Radeon RX 7600M XT is a mobile graphics processor with a 52nd percentile ranking, 8 GB of GDDR6 memory, and 20.23 TFLOPS FP32. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and has 32 ray tracing cores. Its nearest rivals are desktop GPUs from the early 2010s, such as the GeForce GTX 670 and GTX 590, indicating that its performance level is comparable to older enthusiast hardware rather than modern data center parts.

The decision between the two depends entirely on workload. For compute-heavy tasks such as large-scale matrix operations, memory-intensive AI models, or scientific data processing, the MI300X is the only viable choice in this comparison. Its 324.7% OpenCL lead over the RX 7600M XT is decisive, and its memory capacity and bandwidth are in a different class entirely.

For gaming, graphics rendering, or any workload requiring a display output, the RX 7600M XT is the only option. The MI300X cannot output video, has no pixel rate, and lacks all graphics APIs. The RX 7600M XT also consumes far less power at 120 W versus 750 W, making it suitable for portable devices where the MI300X would require a data center power infrastructure.

The database records no scenario where the RX 7600M XT outperforms the MI300X in any benchmark. Conversely, the MI300X has no graphical capabilities at all. The verdict is straightforward: pick the MI300X for compute, pick the RX 7600M XT for graphics, and do not confuse the two.

Specification Differences

| Field | AMD Instinct MI300X | AMD Radeon RX 7600M XT |

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

| Architecture | CDNA 3.0 | RDNA 3.0 |

| 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 | N/A | 2023 MHz |

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

| Memory Size | 192 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 | 19456 | 2048 |

| TMUs | 1216 | 128 |

| ROPs | 0 | 64 |

| RT Cores | N/A | 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 | 750 W | 120 W |

| Slot Width | OAM Module | IGP |

| Suggested PSU | 1150 W | N/A |

| 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 |

| Release Date | 2023-12-05 | 2023-01-03 |

| Predecessor | Radeon Instinct | Polaris Mobile |

| Production Status | N/A | Active |

| Geekbench OpenCL | 317994 | 74869 |

| Percentile vs All GPUs | 100 | 52 |

| Average Benchmark Score | 317994 | 12710 |