AMD Instinct MI308X vs NVIDIA RTX 500 Mobile Ada Generation Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark results for the AMD Instinct MI308X and the NVIDIA RTX 500 Mobile Ada Generation. Both GPUs have an empty benchmark array, an average benchmark score of 0, and a percentile rank of 50 against all GPUs. There are no wins recorded for either part, and no nearest rival data is available for either. The absence of measured performance data means no direct numerical comparison of compute throughput, rendering rates, or memory performance can be drawn from the database. The two products occupy entirely different segments, and the data shows no overlap in their measured workloads. Without benchmark entries, any head-to-head analysis must rely on the architectural and specification differences recorded in the database.

Architecture Differences

The AMD Instinct MI308X uses the Aqua Vanjaram chip based on CDNA 3.0 architecture, built on a 5 nm process at TSMC. It integrates 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million per mm². The NVIDIA RTX 500 Mobile Ada Generation uses the AD107 chip based on Ada Lovelace architecture, also fabricated on a 5 nm process at TSMC. Its transistor count is 18,900 million on a 159 mm² die, with a density of 118.9 million per mm². The MI308X transistor density is 26.5% higher than the RTX 500 Mobile, reflecting the denser packing of compute resources on the larger die.

The MI308X is an Instinct generation accelerator with a CDNA 3.0 design, while the RTX 500 Mobile belongs to the Ada-MW (x000A) generation. The MI308X draws its lineage from Radeon Instinct as its predecessor, whereas the RTX 500 Mobile lists Ampere-MW as its predecessor and Blackwell-MW as its successor. The MI308X uses HBM3 memory totaling 192 GB across an 8192 bit bus, delivering 5.32 TB/s of bandwidth. The RTX 500 Mobile uses 4 GB of GDDR6 on a 64 bit bus, providing 128.0 GB/s. The memory bandwidth difference is substantial: the MI308X offers 41.6 times the bandwidth of the RTX 500 Mobile. Memory clock rates also diverge, with the MI308X at 1300 MHz (5.2 Gbps effective) versus 2000 MHz (16 Gbps effective) for the RTX 500 Mobile.

Shader resources differ by an order of magnitude. The MI308X has 19,456 shading units, 1,216 texture mapping units, and no ROPs, resulting in a texture rate of 2,553.6 GTexel/s and a pixel rate of 0 MPixel/s. The RTX 500 Mobile has 2,048 shading units, 64 TMUs, and 32 ROPs, yielding a texture rate of 129.6 GTexel/s and a pixel rate of 64.80 GPixel/s. The MI308X texture rate is 19.7 times higher. The RTX 500 Mobile includes 16 ray tracing cores and 64 tensor cores, while the MI308X lists no RT cores and no tensor cores in the database. FP32 throughput stands at 81.72 TFLOPS for the MI308X and 8.294 TFLOPS for the RTX 500 Mobile, a 9.85 times difference. Both parts show FP16 throughput at a 1:1 ratio with FP32.

Clock behavior differs in shape. The MI308X has a base clock of 1000 MHz and a boost clock of 2100 MHz. The RTX 500 Mobile has a base clock of 1485 MHz and a boost clock of 2025 MHz. The RTX 500 Mobile starts higher but the MI308X boosts 75 MHz higher. API support is absent for the MI308X: DirectX, OpenGL, and Vulkan are all listed as N/A. The RTX 500 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI308X has no display outputs, while the RTX 500 Mobile outputs are listed as portable device dependent. The MI308X uses a PCIe 5.0 x16 interface, versus PCIe 4.0 x8 for the RTX 500 Mobile. Power delivery and thermal envelopes are far apart: the MI308X has a TDP of 750 W and a suggested PSU of 1150 W, while the RTX 500 Mobile has a TDP of 35 W and no suggested PSU. The MI308X is an OAM module with no power connectors, and the RTX 500 Mobile is an IGP with no power connectors.

FAQ

Q: Which GPU has higher FP32 compute throughput?

A: The AMD Instinct MI308X delivers 81.72 TFLOPS of FP32, which is 9.85 times the 8.294 TFLOPS of the NVIDIA RTX 500 Mobile Ada Generation.

Q: How do the memory subsystems compare?

A: The MI308X has 192 GB of HBM3 on an 8192 bit bus with 5.32 TB/s bandwidth. The RTX 500 Mobile has 4 GB of GDDR6 on a 64 bit bus with 128.0 GB/s bandwidth. The MI308X bandwidth is 41.6 times higher.

Q: Do both GPUs support ray tracing?

A: No. The NVIDIA RTX 500 Mobile Ada Generation includes 16 ray tracing cores and 64 tensor cores. The AMD Instinct MI308X lists no ray tracing cores and no tensor cores.

Q: What are the thermal design power figures?

A: The AMD Instinct MI308X has a TDP of 750 W with a suggested PSU of 1150 W. The NVIDIA RTX 500 Mobile has a TDP of 35 W and no suggested PSU listed.

Q: Which GPU has API support for graphics workloads?

A: The RTX 500 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI308X lists DirectX, OpenGL, and Vulkan as N/A, and has no display outputs.

Q: What are the process nodes and die sizes?

A: Both are built on TSMC 5 nm. The MI308X die is 1017 mm² with 153,000 million transistors, while the RTX 500 Mobile die is 159 mm² with 18,900 million transistors.

Specification Differences

| Field | AMD Instinct MI308X | NVIDIA RTX 500 Mobile Ada Generation |

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

| 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 | None | 16 |

| Tensor Cores | None | 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 |

| Production Status | Not listed | Active |

| Predecessor | Radeon Instinct | Ampere-MW |

| Successor | None | Blackwell-MW |

| Release Date | 2023-12-05 | 2024-02-25 |

Where Each One Wins

The AMD Instinct MI308X wins decisively in raw compute resources. Its FP32 throughput of 81.72 TFLOPS is 9.85 times that of the RTX 500 Mobile, and its FP16 output matches at 81.72 TFLOPS. The texture rate of 2,553.6 GTexel/s is 19.7 times the RTX 500 Mobile figure. Memory capacity is 48 times larger at 192 GB versus 4 GB, and bandwidth is 41.6 times higher at 5.32 TB/s versus 128.0 GB/s. The 8192 bit memory bus and HBM3 type separate it from the 64 bit GDDR6 configuration of the mobile part. The MI308X also uses a PCIe 5.0 x16 interface, doubling the lane count and advancing one generation over the PCIe 4.0 x8 of the RTX 500 Mobile. Its CDNA 3.0 architecture, with 19,456 shading units and 1,216 TMUs, positions it for large-scale parallel workloads. The absence of ROPs, display outputs, and graphics API support confirms its role as a compute-focused accelerator rather than a graphics output device. The 750 W TDP and 1150 W suggested PSU indicate a system-level component intended for dense compute environments, not portable devices.

The NVIDIA RTX 500 Mobile Ada Generation wins in areas tied to graphics and mobile integration. It has 32 ROPs and a pixel rate of 64.80 GPixel/s, while the MI308X has 0 ROPs and a pixel rate of 0 MPixel/s. The RTX 500 Mobile includes 16 ray tracing cores and 64 tensor cores, features entirely absent from the MI308X record. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, whereas the MI308X lists all three APIs as N/A. Display outputs are present in a portable device dependent form, while the MI308X has none. The RTX 500 Mobile has a higher base clock of 1485 MHz versus 1000 MHz, and a higher memory clock of 2000 MHz (16 Gbps effective) versus 1300 MHz (5.2 Gbps effective). Its TDP of 35 W is 21.4 times lower than the MI308X, and its IGP slot width suits thin mobile systems. The production status of the RTX 500 Mobile is listed as active, while the MI308X production status is not listed. The RTX 500 Mobile also has a defined successor in Blackwell-MW, whereas the MI308X successor field is empty. The RTX 500 Mobile was released on 2024-02-25, after the MI308X release date of 2023-12-05.

The data indicates a clear split: the MI308X dominates theoretical compute and memory throughput metrics, while the RTX 500 Mobile carries all graphics pipeline features, ray tracing, tensor acceleration, API support, and mobile form factor advantages.