AMD Instinct MI355X vs NVIDIA GeForce RTX 4070 Max-Q Comparison

Head-to-Head Benchmarks

The recorded data contains no head-to-head benchmark results for the AMD Instinct MI355X and the NVIDIA GeForce RTX 4070 Max-Q. The database shows zero wins for either part, and the average benchmark score for both entries is zero. Neither product has any nearest rivals listed, and the percentile versus all GPUs is identical at 50 for both. This absence of measured performance data means the comparison must rely entirely on architectural specifications and feature sets rather than empirical test results.

The AMD Instinct MI355X delivers 78.64 TFLOPS of FP32 throughput, while the NVIDIA GeForce RTX 4070 Max-Q delivers 11.34 TFLOPS. That difference indicates the MI355X has roughly seven times the raw single-precision compute capacity. Texture rate follows a similar pattern, with the MI355X at 2,457.6 GTexel/s versus the RTX 4070 Max-Q at 177.1 GTexel/s. The pixel rate tells a different story: the MI355X is recorded at 0 MPixel/s, while the RTX 4070 Max-Q produces 59.04 GPixel/s. This reflects the respective design goals, where the Instinct part is built for compute workloads without display output, and the GeForce part is a mobile graphics processor with full rasterization capability.

The FP16 numbers mirror FP32 exactly on both parts. The MI355X shows 78.64 TFLOPS FP16 with a 1:1 ratio, and the RTX 4070 Max-Q shows 11.34 TFLOPS FP16 with the same 1:1 ratio. No ray tracing or tensor core benchmark scores exist in the database for either product, so any RT or AI workload comparison cannot be quantified from the recorded measurements.

Architecture Differences

The MI355X uses the MI350 256CU chip built on CDNA 4.0 architecture, manufactured at a 3 nm node by TSMC. The die contains 185,000 million transistors on a 2380 mm² package, yielding a transistor density of 77.7M per mm². The RTX 4070 Max-Q uses the AD106 chip on Ada Lovelace architecture, also from TSMC but at a 5 nm node. Its die is 188 mm² with 22,900 million transistors, giving a density of 121.8M per mm². The MI355X has a much larger physical die by a factor of more than twelve, while the RTX 4070 Max-Q achieves higher transistor density by a factor of roughly 1.6.

The MI355X is an OAM module with no display outputs, no power connectors, and a suggested power supply of 1800 W. It draws 1400 W under load. The RTX 4070 Max-Q is an IGP with portable device dependent display outputs and no separate power connectors, consuming 35 W. The MI355X connects via PCIe 5.0 x16, while the RTX 4070 Max-Q uses PCIe 4.0 x8. The MI355X uses HBM3e memory totaling 288 GB across an 8192 bit bus, producing 8.19 TB/s of bandwidth. The RTX 4070 Max-Q uses 8 GB of GDDR6 on a 128 bit bus with 256.0 GB/s of bandwidth. The MI355X memory bandwidth is roughly 32 times higher than the RTX 4070 Max-Q.

The MI355X has 16,384 shading units and 1,024 texture mapping units, with 0 ROPs and no RT or tensor core counts listed. The RTX 4070 Max-Q has 4,608 shading units, 144 TMUs, 48 ROPs, 36 RT cores, and 144 tensor cores. The MI355X base clock is 1000 MHz with a boost of 2400 MHz, while the RTX 4070 Max-Q runs at 735 MHz base and 1230 MHz boost. Memory clock is identical on paper at 2000 MHz, but effective data rates differ: 8 Gbps for the MI355X versus 16 Gbps for the RTX 4070 Max-Q. The MI355X has no DirectX, OpenGL, or Vulkan support recorded, while the RTX 4070 Max-Q supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The MI355X was released on 2025-06-11, with a predecessor of Radeon Instinct. The RTX 4070 Max-Q was released on 2023-01-02, with a predecessor of GeForce 30 Mobile and a successor of GeForce 50 Mobile. The RTX 4070 Max-Q production status is listed as Active, while the MI355X production status is not recorded.

Where Each One Wins

The MI355X wins decisively in raw compute throughput. Its FP32 and FP16 performance of 78.64 TFLOPS is suitable for large-scale parallel workloads such as scientific simulation, machine learning training, and high-performance computing. The 288 GB of HBM3e memory with 8.19 TB/s bandwidth allows it to hold massive datasets on-package, far beyond the 8 GB capacity of the RTX 4070 Max-Q. The 8192 bit memory bus is an order of magnitude wider than the 128 bit bus on the NVIDIA part. The MI355X also has more than three times the shading units and more than seven times the texture units, which supports heavy compute shader and texture-heavy compute tasks.

The RTX 4070 Max-Q wins in power efficiency and mobile suitability. Its 35 W TDP is dramatically lower than the 1400 W of the MI355X, making it usable in thin-and-light laptops without external power bricks. The RTX 4070 Max-Q has functional pixel output at 59.04 GPixel/s, meaning it can drive displays, which the MI355X cannot do at all. The RTX 4070 Max-Q includes 36 RT cores and 144 tensor cores, enabling hardware-accelerated ray tracing and AI inference features that the MI355X does not list. The NVIDIA part also supports the full graphics API stack, including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI355X has no graphics API support recorded.

The RTX 4070 Max-Q has a higher transistor density at 121.8M per mm² versus 77.7M per mm², indicating a more compact, integrated design. The MI355X uses a physically larger module in terms of width at 165 mm versus no recorded dimensions for the NVIDIA part, and its 102 mm length with 4 inches specification confirms a server-grade form factor.

FAQ

Q: Which processor has higher FP32 compute performance?

A: The AMD Instinct MI355X records 78.64 TFLOPS of FP32, while the NVIDIA GeForce RTX 4070 Max-Q records 11.34 TFLOPS. The MI355X is roughly seven times higher.

Q: Can the AMD Instinct MI355X output video to a display?

A: No. The database lists the MI355X with no display outputs and a pixel rate of 0 MPixel/s. The RTX 4070 Max-Q, by contrast, has portable device dependent display outputs and a pixel rate of 59.04 GPixel/s.

Q: What memory configurations do these parts use?

A: The MI355X uses 288 GB of HBM3e across an 8192 bit bus with 8.19 TB/s bandwidth. The RTX 4070 Max-Q uses 8 GB of GDDR6 across a 128 bit bus with 256.0 GB/s bandwidth.

Q: Which architecture supports ray tracing?

A: Only the NVIDIA GeForce RTX 4070 Max-Q lists RT cores, with 36 of them. The AMD Instinct MI355X has no RT core count recorded in the database.

Q: What is the power consumption difference?

A: The MI355X is rated at 1400 W with a suggested power supply of 1800 W. The RTX 4070 Max-Q is rated at 35 W and has no suggested PSU listed.

Q: When were these products released?

A: The MI355X was released on 2025-06-11. The RTX 4070 Max-Q was released on 2023-01-02.

Specification Differences

| Specification | AMD Instinct MI355X | NVIDIA GeForce RTX 4070 Max-Q |

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

| Architecture | CDNA 4.0 | Ada Lovelace |

| Process Node | 3 nm | 5 nm |

| Transistors | 185,000 million | 22,900 million |

| Die Size | 2380 mm² | 188 mm² |

| Transistor Density | 77.7M / mm² | 121.8M / mm² |

| Base Clock | 1000 MHz | 735 MHz |

| Boost Clock | 2400 MHz | 1230 MHz |

| Memory Size | 288 GB | 8 GB |

| Memory Type | HBM3e | GDDR6 |

| Memory Bus Width | 8192 bit | 128 bit |

| Memory Bandwidth | 8.19 TB/s | 256.0 GB/s |

| Effective Memory Rate | 8 Gbps | 16 Gbps |

| Shading Units | 16384 | 4608 |

| TMUs | 1024 | 144 |

| ROPs | 0 | 48 |

| RT Cores | None listed | 36 |

| Tensor Cores | None listed | 144 |

| Pixel Rate | 0 MPixel/s | 59.04 GPixel/s |

| Texture Rate | 2,457.6 GTexel/s | 177.1 GTexel/s |

| FP32 Performance | 78.64 TFLOPS | 11.34 TFLOPS |

| FP16 Performance | 78.64 TFLOPS (1:1) | 11.34 TFLOPS (1:1) |

| TDP | 1400 W | 35 W |

| Slot Width | OAM Module | IGP |

| Power Connectors | None | None |

| Suggested PSU | 1800 W | None listed |

| 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 |

| Length | 102 mm (4 inches) | Not recorded |

| Width | 165 mm (6.5 inches) | Not recorded |

| Production Status | Not recorded | Active |

| Release Date | 2025-06-11 | 2023-01-02 |

| Predecessor | Radeon Instinct | GeForce 30 Mobile |

| Successor | None listed | GeForce 50 Mobile |

The two products occupy entirely different segments. The MI355X is a high-power accelerator module with no graphics output, designed for compute density. The RTX 4070 Max-Q is a low-power mobile GPU with full graphics API support. The database records no shared benchmark scores, so the comparison rests on the specification deltas above. The MI355X leads in every compute-oriented metric, while the RTX 4070 Max-Q leads in power efficiency, graphics features, and transistor density.