AMD Radeon Instinct MI300X vs NVIDIA GeForce RTX 5070 Mobile Comparison

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark results between the AMD Radeon Instinct MI300X and the NVIDIA GeForce RTX 5070 Mobile. The MI300X carries no benchmark scores in the database, while the RTX 5070 Mobile has nine recorded entries. This asymmetry means comparisons must rely on architectural specifications and the RTX 5070 Mobile's placement among its nearest rivals.

The RTX 5070 Mobile's average benchmark score is 29,928 across its recorded tests. Its percentile ranking sits at 75, meaning it outperforms three-quarters of all GPUs in the database. The nearest rival is the NVIDIA GeForce RTX 3070 Ti with an average score of 29,945, a delta of -0.1%, placing the two effectively at parity. The RTX 2080 Ti follows at 29,783, which is 0.5% behind the mobile part. The AMD Radeon RX 6800 scores 30,095, putting it 0.6% ahead, while the RX 6700 leads by 1.7% with its 30,433 average.

Individual benchmark results for the RTX 5070 Mobile show its strongest showing in Geekbench OpenCL with a score of 122,238. The Vulkan test records 116,960. Passmark G3D delivers 20,355, while the GPU compute test reaches 8,279. The DirectX 9 test scores 214, DirectX 11 scores 192, DirectX 10 scores 129, and DirectX 12 scores 93. The 2D graphics test completes the set at 896.

The MI300X has no recorded benchmark scores, so no wins can be attributed to either product in a direct sense. The RTX 5070 Mobile holds all nine recorded benchmark entries, while the MI300X holds none. The data indicates that the mobile GPU has verified performance data, whereas the data center accelerator's performance profile remains unmeasured in this database.

Architecture Differences

The two processors diverge fundamentally in their design targets. The MI300X uses AMD's CDNA 3.0 architecture on the Aqua Vanjaram chip, built for data center compute workloads. The RTX 5070 Mobile uses NVIDIA's Blackwell 2.0 architecture on the GB206 chip, designed for laptop graphics and gaming.

Both are manufactured on a 5 nm process at TSMC, but the transistor counts differ dramatically. The MI300X packs 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4M per mm². The RTX 5070 Mobile contains 21,900 million transistors on a 181 mm² die, with a density of 121.0M per mm². The MI300X die is over five times larger and holds seven times more transistors.

Memory systems are equally divergent. The MI300X uses 192 GB of HBM3 across an 8192-bit bus, delivering 10.3 TB/s of bandwidth. The RTX 5070 Mobile uses 8 GB of GDDR7 on a 128-bit bus, providing 384.0 GB/s. The bandwidth gap is approximately 27 times in favor of the MI300X, reflecting the data center part's focus on memory-bound workloads.

The compute units show a similar scale difference. The MI300X has 19,456 shading units, 1,216 texture mapping units, and no ROPs, with a pixel rate of 0 MPixel/s. The RTX 5070 Mobile has 4,608 shading units, 144 TMUs, and 48 ROPs, delivering 68.40 GPixel/s. The texture rates are 2,553.6 GTexel/s for the MI300X versus 205.2 GTexel/s for the RTX 5070 Mobile.

Floating-point performance reflects the architectural priorities. The MI300X reaches 81.72 TFLOPS in FP32 and 653.7 TFLOPS in FP16 with an 8:1 ratio. The RTX 5070 Mobile delivers 13.13 TFLOPS in both FP32 and FP16 with a 1:1 ratio. The MI300X's FP16 throughput exceeds its FP32 by a factor of eight, indicating a design optimized for reduced-precision compute. The RTX 5070 Mobile handles both precisions at equal rates.

Clock speeds differ notably. The MI300X runs at a 1000 MHz base and 2100 MHz boost, while the RTX 5070 Mobile operates at 907 MHz base and 1425 MHz boost. The MI300X's boost clock is 47% higher. Memory clocks show 2525 MHz with 10.1 Gbps effective for the MI300X versus 1500 MHz with 24 Gbps effective for the RTX 5070 Mobile.

The RTX 5070 Mobile includes 36 ray tracing cores and 144 tensor cores, features entirely absent from the MI300X's specification list. The NVIDIA part also supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the AMD accelerator lists no API support.

Form factors and power envelopes could not be more different. The MI300X is an OAM Module with a 750 W TDP and no power connectors, suggesting a 1150 W power supply. The RTX 5070 Mobile is an IGP with a 50 W TDP, also with no power connectors, and no suggested PSU. The MI300X consumes 15 times the power budget.

The MI300X has no display outputs, while the RTX 5070 Mobile's outputs are listed as portable device dependent. Both use PCIe 5.0 x16 for host connectivity.

Release timing shows the MI300X launched on December 5, 2023, while the RTX 5070 Mobile arrived on April 14, 2025. The MI300X's predecessor is the FirePro Data Center line, and it has no successor. The RTX 5070 Mobile's predecessor is the GeForce 40 Mobile series, and its production status is active.

Where Each One Wins

The MI300X wins decisively in raw compute throughput. Its FP32 performance of 81.72 TFLOPS is roughly 6.2 times the RTX 5070 Mobile's 13.13 TFLOPS. In FP16, the gap widens further: 653.7 TFLOPS versus 13.13 TFLOPS, a 50-fold difference. The 192 GB memory capacity and 10.3 TB/s bandwidth make it suited for large model inference and training datasets that would not fit in the RTX 5070 Mobile's 8 GB frame buffer.

The RTX 5070 Mobile wins in graphics-specific features. Its 48 ROPs and 68.40 GPixel/s pixel rate enable rasterization output that the MI300X cannot produce, given its 0 MPixel/s pixel rate. The ray tracing cores and tensor cores provide hardware acceleration for real-time graphics and DLSS-style workloads. The DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support make it compatible with consumer graphics software stacks.

Power efficiency favors the RTX 5070 Mobile. At 50 W TDP versus 750 W, the mobile part delivers 13.13 TFLOPS with 15 times less power draw. The FP32 per watt ratio is 0.263 TFLOPS/W for the RTX 5070 Mobile versus 0.109 TFLOPS/W for the MI300X, a 2.4 times advantage for the NVIDIA part.

The RTX 5070 Mobile's benchmark data places it at the 75th percentile of all GPUs. Its nearest rivals cluster within 1.7% of its average score, indicating a competitive mid-range position. The MI300X's 50th percentile ranking with zero recorded scores reflects its absence from the consumer benchmark suite rather than any measured performance level.

The MI300X targets data center deployment where the OAM Module form factor and high memory bandwidth serve large-scale compute. The RTX 5070 Mobile targets portable devices where the IGP form factor and modest power draw enable laptop integration.

FAQ

Q: Which GPU has higher FP32 performance?

A: The MI300X delivers 81.72 TFLOPS in FP32, while the RTX 5070 Mobile provides 13.13 TFLOPS, a 6.2 times advantage for the AMD part.

Q: How does the RTX 5070 Mobile compare to its nearest rivals?

A: The RTX 5070 Mobile's average score of 29,928 places it 0.1% ahead of the RTX 3070 Ti, 0.5% ahead of the RTX 2080 Ti, 0.6% behind the RX 6800, and 1.7% behind the RX 6700.

Q: What memory configurations do the two GPUs use?

A: The MI300X uses 192 GB of HBM3 on an 8192-bit bus with 10.3 TB/s bandwidth. The RTX 5070 Mobile uses 8 GB of GDDR7 on a 128-bit bus with 384.0 GB/s bandwidth.

Q: Does the RTX 5070 Mobile support ray tracing?

A: Yes, it includes 36 ray tracing cores and 144 tensor cores. The MI300X lists no ray tracing or tensor core specifications.

Q: What is the power draw difference?

A: The MI300X has a 750 W TDP with a suggested 1150 W power supply. The RTX 5070 Mobile has a 50 W TDP with no suggested PSU listed.

Q: When did each product launch?

A: The MI300X released on December 5, 2023. The RTX 5070 Mobile released on April 14, 2025.

Specification Differences

| Field | AMD Radeon Instinct MI300X | NVIDIA GeForce RTX 5070 Mobile |

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

| Architecture | CDNA 3.0 | Blackwell 2.0 |

| Chip | Aqua Vanjaram | GB206 |

| Transistors | 153,000 million | 21,900 million |

| Die size | 1017 mm² | 181 mm² |

| Transistor density | 150.4M / mm² | 121.0M / mm² |

| Base clock | 1000 MHz | 907 MHz |

| Boost clock | 2100 MHz | 1425 MHz |

| Memory clock | 2525 MHz, 10.1 Gbps effective | 1500 MHz, 24 Gbps effective |

| Memory size | 192 GB | 8 GB |

| Memory type | HBM3 | GDDR7 |

| Memory bus width | 8192 bit | 128 bit |

| Memory bandwidth | 10.3 TB/s | 384.0 GB/s |

| Shading units | 19,456 | 4,608 |

| TMUs | 1,216 | 144 |

| ROPs | 0 | 48 |

| Ray tracing cores | None listed | 36 |

| Tensor cores | None listed | 144 |

| Pixel rate | 0 MPixel/s | 68.40 GPixel/s |

| Texture rate | 2,553.6 GTexel/s | 205.2 GTexel/s |

| FP32 performance | 81.72 TFLOPS | 13.13 TFLOPS |

| FP16 performance | 653.7 TFLOPS (8:1) | 13.13 TFLOPS (1:1) |

| TDP | 750 W | 50 W |

| Slot width | OAM Module | IGP |

| Suggested PSU | 1150 W | None listed |

| Display outputs | No outputs | Portable Device Dependent |

| DirectX support | None listed | 12 Ultimate (12_2) |

| OpenGL support | None listed | 4.6 |

| Vulkan support | None listed | 1.4 |

| Release date | 2023-12-05 | 2025-04-14 |

| Predecessor | FirePro Data Center | GeForce 40 Mobile |

| Production status | None listed | Active |

| Percentile vs all GPUs | 50 | 75 |

| Average benchmark score | 0 | 29,928 |