AMD Instinct MI300X vs NVIDIA RTX 500 Mobile Ada Generation Comparison

Head-to-Head Benchmarks

The recorded database contains a single benchmark score for the AMD Instinct MI300X: 317,994 points in Geekbench OpenCL. The NVIDIA RTX 500 Mobile Ada Generation has no recorded benchmark scores in the database, and the head-to-head benchmark list is empty. This creates an asymmetric comparison. The MI300X sits at the 100th percentile among all GPUs, meaning every other recorded GPU in the database scores at or below this figure. The RTX 500 Mobile Ada Generation sits at the 50th percentile, but with an average benchmark score of zero, the percentile is a placeholder rather than a measured result.

The MI300X's nearest rivals provide context for its score. The NVIDIA B200 leads with 345,482 points, putting the MI300X 8% behind. The NVIDIA H200 NVL scores 334,891, which is 5% higher than the MI300X. The MI300X beats the NVIDIA L40S (295,763 points) by 7.5% and the NVIDIA RTX 6000 Ada Generation (287,237 points) by 10.7%. These deltas place the MI300X in a competitive tier just below the top B200 and H200 accelerators, while clearly above the L40S and RTX 6000 Ada.

The RTX 500 Mobile Ada Generation has no rival data and no measured score. Benchmark results indicate it cannot be placed on the same numeric scale. The data does not show any direct head-to-head wins for either product because no paired tests exist. The MI300X's single score stands alone, and the RTX 500 Mobile Ada Generation's absence of scores means any comparison must rely on architectural specifications rather than measured performance.

Where Each One Wins

The MI300X wins in raw compute throughput. Its FP32 performance is 81.72 TFLOPS, and its FP16 performance is identical at 81.72 TFLOPS with a 1:1 ratio. The texture rate reaches 2,553.6 GTexel/s. The pixel rate is recorded as 0 MPixel/s, which reflects the absence of display outputs and ROPs (0 units). Memory bandwidth is 5.32 TB/s over an 8192-bit bus with 192 GB of HBM3 memory. These figures point to a device designed for massive parallel workloads, not for rendering or display tasks.

The RTX 500 Mobile Ada Generation wins in the mobile and rendering domain. It has 2,048 shading units, 64 texture mapping units, 32 ROPs, 16 ray tracing cores, and 64 tensor cores. Its pixel rate is 64.80 GPixel/s, and its texture rate is 129.6 GTexel/s. FP32 and FP16 are both 8.294 TFLOPS with a 1:1 ratio. Memory is 4 GB of GDDR6 on a 64-bit bus, yielding 128.0 GB/s bandwidth. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X lists all APIs as N/A.

Use-case separation is clear from the data. The MI300X targets compute-heavy environments where memory capacity and bandwidth dominate. The RTX 500 Mobile Ada Generation targets portable systems with display outputs and graphics API support. The MI300X has no display outputs, while the RTX 500 Mobile Ada Generation has outputs described as "Portable Device Dependent." The MI300X uses a 750 W TDP and an OAM Module slot width. The RTX 500 Mobile Ada Generation uses a 35 W TDP and an IGP slot width. The former is a data center accelerator; the latter is an integrated mobile GPU.

Architecture Differences

The MI300X uses the Aqua Vanjaram chip on CDNA 3.0 architecture, built on a 5 nm TSMC process. It contains 153,000 million transistors on a 1017 mm² die, giving a transistor density of 150.4M per mm². The RTX 500 Mobile Ada Generation uses the AD107 chip on Ada Lovelace architecture, also on a 5 nm TSMC process. It has 18,900 million transistors on a 159 mm² die, with a density of 118.9M per mm². The MI300X's die is over six times larger, and its transistor count is over eight times higher.

Clock behavior differs. The MI300X has a base clock of 1000 MHz and a boost clock of 2100 MHz. Its memory clock is 1300 MHz with 5.2 Gbps effective. The RTX 500 Mobile Ada Generation has a base clock of 1485 MHz and a boost clock of 2025 MHz. Its memory clock is 2000 MHz with 16 Gbps effective. The MI300X has a higher boost by 75 MHz, but the RTX 500 Mobile Ada Generation starts from a much higher base clock.

Memory architecture is fundamentally different. The MI300X uses HBM3 with 192 GB capacity, an 8192-bit bus, and 5.32 TB/s bandwidth. The RTX 500 Mobile Ada Generation uses GDDR6 with 4 GB capacity, a 64-bit bus, and 128.0 GB/s bandwidth. The MI300X has 42 times the bus width and 41.6 times the bandwidth. The RTX 500 Mobile Ada Generation has 16 ray tracing cores and 64 tensor cores; the MI300X lists neither as available. The RTX 500 Mobile Ada Generation has 32 ROPs; the MI300X has 0.

Bus interface and power delivery also diverge. The MI300X connects via PCIe 5.0 x16 and uses a 1150 W suggested PSU. The RTX 500 Mobile Ada Generation connects via PCIe 4.0 x8 and has no suggested PSU listed. Both have no power connectors specified. The MI300X was released on 2023-12-05, and the RTX 500 Mobile Ada Generation followed on 2024-02-25. The MI300X's predecessor is Radeon Instinct; the RTX 500 Mobile Ada Generation's predecessor is Ampere-MW and its successor is Blackwell-MW.

FAQ

Q: How does the MI300X compare to its nearest rivals in the database?

A: The MI300X scores 317,994 in Geekbench OpenCL. It trails the NVIDIA B200 (345,482) by 8% and the NVIDIA H200 NVL (334,891) by 5%. It leads the NVIDIA L40S (295,763) by 7.5% and the NVIDIA RTX 6000 Ada Generation (287,237) by 10.7%.

Q: Why does the RTX 500 Mobile Ada Generation have no benchmark scores?

A: The database lists zero benchmark entries for this GPU, and its average benchmark score is 0. Its percentile of 50 is not derived from measured performance. The head-to-head benchmark list between the MI300X and the RTX 500 Mobile Ada Generation is also empty.

Q: What memory capacities do the two devices offer?

A: The MI300X has 192 GB of HBM3 memory with an 8192-bit bus and 5.32 TB/s bandwidth. The RTX 500 Mobile Ada Generation has 4 GB of GDDR6 memory with a 64-bit bus and 128.0 GB/s bandwidth.

Q: Which device supports graphics APIs?

A: The RTX 500 Mobile Ada Generation supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X lists all graphics APIs as N/A and has no display outputs.

Q: What are the TDP and slot requirements?

A: The MI300X has a 750 W TDP and uses an OAM Module slot, with a suggested PSU of 1150 W. The RTX 500 Mobile Ada Generation has a 35 W TDP and uses an IGP slot, with no suggested PSU listed.

Q: When were the two products released?

A: The MI300X was released on 2023-12-05. The RTX 500 Mobile Ada Generation was released on 2024-02-25.

The Verdict

The database shows two products with almost no overlap in purpose. The MI300X delivers 81.72 TFLOPS of FP32 and FP16 compute, 192 GB of HBM3, and 5.32 TB/s of memory bandwidth. Its single Geekbench OpenCL score of 317,994 places it at the 100th percentile, within 8% of the top recorded GPU (B200) and ahead of the L40S and RTX 6000 Ada by 7.5% and 10.7%, respectively. This is a data center accelerator with no display output and no graphics API support.

The RTX 500 Mobile Ada Generation provides 8.294 TFLOPS of FP32 and FP16 compute, 4 GB of GDDR6, and 128.0 GB/s bandwidth. It includes 16 ray tracing cores, 64 tensor cores, 32 ROPs, and full support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Its 35 W TDP and IGP slot form factor align with portable devices. It has no recorded benchmark score, so its actual performance relative to the MI300X cannot be quantified from the data.

The verdict from the recorded data: the MI300X is for compute-heavy, memory-bound workloads in a server context. The RTX 500 Mobile Ada Generation is for graphics and ray tracing in a mobile context. The MI300X's 42 times wider memory bus and 41.6 times higher bandwidth dwarf the RTX 500 Mobile Ada Generation, but the latter's rendering capabilities and API support give it a role the MI300X cannot fulfill. Neither product wins a head-to-head benchmark because none exists. The choice depends entirely on the workload type, which the specifications make apparent.

Specification Differences

| Field | AMD Instinct MI300X | NVIDIA RTX 500 Mobile Ada Generation |

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

| Chip | Aqua Vanjaram | AD107 |

| Architecture | CDNA 3.0 | Ada Lovelace |

| Generation | Instinct (MIx) | Ada-MW (x000A) |

| Transistors | 153,000 million | 18,900 million |

| Die Size | 1017 mm² | 159 mm² |

| Transistor Density | 150.4M / mm² | 118.9M / mm² |

| Base Clock | 1000 MHz | 1485 MHz |

| Boost Clock | 2100 MHz | 2025 MHz |

| Memory Clock | 1300 MHz, 5.2 Gbps effective | 2000 MHz, 16 Gbps effective |

| Memory Size | 192 GB | 4 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 8192 bit | 64 bit |

| Memory Bandwidth | 5.32 TB/s | 128.0 GB/s |

| Shading Units | 19456 | 2048 |

| TMUs | 1216 | 64 |

| ROPs | 0 | 32 |

| RT Cores | N/A | 16 |

| Tensor Cores | N/A | 64 |

| Pixel Rate | 0 MPixel/s | 64.80 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 129.6 GTexel/s |

| FP32 | 81.72 TFLOPS | 8.294 TFLOPS |

| FP16 | 81.72 TFLOPS (1:1) | 8.294 TFLOPS (1:1) |

| TDP | 750 W | 35 W |

| Slot Width | OAM Module | IGP |

| Suggested PSU | 1150 W | None |

| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x8 |

| 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 | 2024-02-25 |

| Predecessor | Radeon Instinct | Ampere-MW |

| Successor | None | Blackwell-MW |

| Production Status | None | Active |

| Percentile vs All GPUs | 100 | 50 |

| Average Benchmark Score | 317994 | 0 |

| Geekbench OpenCL Score | 317994 | None |