AMD Instinct MI355X vs NVIDIA GeForce RTX 4070 AD103 Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark entries between the AMD Instinct MI355X and the NVIDIA GeForce RTX 4070 AD103. Both processors occupy the 50th percentile among all GPUs in the database, and neither has an average benchmark score recorded. This absence of comparative measurement data means the relative performance picture must be constructed from their architectural specifications, memory subsystems, and compute throughput figures rather than from direct application-level testing.

The most significant numerical gap between the two appears in raw compute throughput. The AMD Instinct MI355X delivers 78.64 TFLOPS of FP32 performance, while the NVIDIA GeForce RTX 4070 AD103 produces 29.15 TFLOPS. That places the MI355X approximately 2.7 times ahead of the RTX 4070 in single-precision floating-point work. The FP16 figures repeat the same relationship, with the MI355X again at 78.64 TFLOPS and the RTX 4070 at 29.15 TFLOPS, both at a 1:1 ratio to their FP32 rates. For workloads that scale with raw floating-point throughput, the AMD part holds a decisive advantage.

Texture processing tells a similar story. The MI355X reaches 2,457.6 GTexel/s, compared with 455.4 GTexel/s for the RTX 4070, a margin of roughly 5.4 times. Pixel throughput moves in the opposite direction, however. The RTX 4070 records 158.4 GPixel/s, while the MI355X is listed at 0 MPixel/s. This reflects a fundamental difference in design purpose: the AMD accelerator has no raster output stage, whereas the NVIDIA graphics card processes pixels as a normal display-oriented GPU.

Memory bandwidth also heavily favors the MI355X. The AMD unit provides 8.19 TB/s of bandwidth across an 8192-bit bus, while the RTX 4070 offers 504.2 GB/s over a 192-bit interface. The AMD part is ahead by a factor of approximately 16.2 in raw memory throughput, which directly supports its larger compute payload.

Clock behavior differs as well. The RTX 4070 runs at a 1920 MHz base clock and 2475 MHz boost, while the MI355X operates at 1000 MHz base and 2400 MHz boost. The NVIDIA chip achieves its higher FP32 rate per clock with far fewer shaders, but the AMD part compensates through sheer scale: 16,384 shading units versus 5,888.

Architecture Differences

The two parts come from completely different architectural lineages. The AMD Instinct MI355X uses CDNA 4.0, built on a 3 nm process at TSMC with 185,000 million transistors on a 2380 mm² die. Transistor density reaches 77.7M per mm². The NVIDIA GeForce RTX 4070 AD103 uses Ada Lovelace, fabricated on a 5 nm process, also at TSMC, with 45,900 million transistors across a 379 mm² die, for a density of 121.1M per mm². The NVIDIA chip achieves a much higher density per square millimeter, but the AMD die is substantially larger overall, which is where its transistor advantage comes from.

The memory systems are entirely different in kind. The MI355X uses 288 GB of HBM3e memory, while the RTX 4070 uses 12 GB of GDDR6X. The MI355X memory clock is listed at 2000 MHz with 8 Gbps effective data rate, whereas the RTX 4070 memory runs at 1313 MHz with 21 Gbps effective. Bus width differs by a factor of roughly 42.7, with the AMD part at 8192 bits versus 192 bits for NVIDIA. These are not competing approaches to the same problem; they are solutions for different classes of computation.

Shader organization also diverges sharply. The MI355X packs 16,384 shading units and 1,024 texture mapping units, but reports zero ROPs. The RTX 4070 includes 5,888 shading units, 184 TMUs, and 64 ROPs. The NVIDIA part adds 46 ray tracing cores and 184 tensor cores, while the AMD part lists no RT cores and no tensor cores in the database. The absence of those specialized units on the MI355X indicates a pure compute acceleration role rather than a graphics rendering role.

Interface standards differ as well. The MI355X uses PCIe 5.0 x16, while the RTX 4070 uses PCIe 4.0 x16. The AMD module has no display outputs at all, while the RTX 4070 provides 1x HDMI 2.1 and 3x DisplayPort 1.4a. The MI355X supports no DirectX, OpenGL, or Vulkan APIs, while the RTX 4070 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Power characteristics reflect the performance gulf. The MI355X carries a TDP of 1400 W and requires a suggested PSU of 1800 W. The RTX 4070 runs at 200 W TDP with a suggested 550 W PSU. The AMD module uses an OAM form factor with no power connectors listed, while the NVIDIA card is a dual-slot design with a single 16-pin connector.

Physical dimensions differ, too. The MI355X measures 102 mm in length and 165 mm in width, with no height listed. The RTX 4070 is 240 mm long, 110 mm high, and 40 mm wide.

Where Each One Wins

The AMD Instinct MI355X wins in every category that matters for large-scale parallel compute. Its FP32 throughput at 78.64 TFLOPS is more than double the RTX 4070's 29.15 TFLOPS. Its FP16 output matches that same ratio, making it the stronger choice for mixed-precision scientific workloads. Texture rate at 2,457.6 GTexel/s versus 455.4 GTexel/s gives it a clear edge in any texture-heavy compute path. Memory bandwidth of 8.19 TB/s against 504.2 GB/s means data movement is far less likely to bottleneck the AMD part. The 288 GB of HBM3e capacity dwarfs the 12 GB GDDR6X allocation on the NVIDIA card, so the MI355X can hold far larger datasets on-chip.

The NVIDIA GeForce RTX 4070 AD103 wins in the areas tied to graphics output and conventional desktop use. Its 158.4 GPixel/s pixel rate is a real capability, while the MI355X records 0 MPixel/s. The RTX 4070 has 64 ROPs, 46 ray tracing cores, and 184 tensor cores, none of which appear on the AMD part. It also supports a full modern graphics API stack, including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI355X lists no API support. The NVIDIA card provides display outputs, the AMD module provides none.

The RTX 4070 also consumes far less power. At 200 W TDP versus 1400 W, it draws a fraction of the power of the MI355X. Its suggested PSU of 550 W is dramatically lower than the 1800 W unit recommended for the AMD accelerator. For systems where power delivery and cooling are constrained, the NVIDIA part is the only viable option between the two.

Clock speed also favors the RTX 4070, with a 1920 MHz base clock versus 1000 MHz on the MI355X, and a 2475 MHz boost versus 2400 MHz. Higher clocks do not compensate for the massive difference in shader count and memory bandwidth, but they do indicate a more responsive part at lower utilizations.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Instinct MI355X delivers 78.64 TFLOPS of FP32 performance, while the NVIDIA GeForce RTX 4070 AD103 delivers 29.15 TFLOPS. The AMD part is roughly 2.7 times faster in this metric.

Q: How do the memory capacities compare?

A: The MI355X has 288 GB of HBM3e memory, while the RTX 4070 has 12 GB of GDDR6X. The AMD part also provides 8.19 TB/s of bandwidth versus 504.2 GB/s.

Q: Does the AMD Instinct MI355X support graphics rendering?

A: The database records 0 MPixel/s pixel rate, zero ROPs, no display outputs, and no DirectX, OpenGL, or Vulkan API support for the MI355X. It is not designed for graphics rendering.

Q: What are the power requirements of each card?

A: The MI355X has a TDP of 1400 W and a suggested PSU of 1800 W. The RTX 4070 has a TDP of 200 W and a suggested PSU of 550 W.

Q: Which card has ray tracing cores?

A: The RTX 4070 has 46 ray tracing cores and 184 tensor cores. The MI355X lists no RT cores and no tensor cores.

Q: What are the manufacturing process nodes?

A: The MI355X uses a 3 nm process, while the RTX 4070 uses a 5 nm process. Both are fabricated at TSMC.

The Verdict

The data separates these two products into distinct categories with almost no functional overlap. The AMD Instinct MI355X is a high-power compute accelerator built around CDNA 4.0, with 78.64 TFLOPS of FP32 throughput, 288 GB of HBM3e memory, and 8.19 TB/s of bandwidth. It has no display outputs, no graphics API support, and no pixel rendering capability. Its 1400 W TDP and OAM module form factor place it firmly in datacenter or server environments.

The NVIDIA GeForce RTX 4070 AD103 is a desktop graphics card. It renders pixels at 158.4 GPixel/s, includes 46 ray tracing cores, and supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. It draws 200 W and fits in a dual-slot, 240 mm length form factor with standard display outputs. Its 12 GB of GDDR6X memory and 504.2 GB/s bandwidth are modest compared with the MI355X, but they support its graphics-oriented role.

For a buyer choosing strictly from the recorded data, the decision hinges entirely on the intended workload. The MI355X is the choice for compute-heavy tasks that can use its FP32 and FP16 throughput, its 288 GB memory capacity, and its 8.19 TB/s bandwidth. The RTX 4070 is the choice for any task requiring graphics output, ray tracing, tensor operations, or standard desktop API support. Neither part can substitute for the other in the other's domain.

Specification Differences

| Field | AMD Instinct MI355X | NVIDIA GeForce RTX 4070 AD103 |

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

| Architecture | CDNA 4.0 | Ada Lovelace |

| Process node | 3 nm | 5 nm |

| Transistors | 185,000 million | 45,900 million |

| Die size | 2380 mm² | 379 mm² |

| Transistor density | 77.7M / mm² | 121.1M / mm² |

| Base clock | 1000 MHz | 1920 MHz |

| Boost clock | 2400 MHz | 2475 MHz |

| Memory clock | 2000 MHz, 8 Gbps effective | 1313 MHz, 21 Gbps effective |

| Memory size | 288 GB | 12 GB |

| Memory type | HBM3e | GDDR6X |

| Memory bus width | 8192 bit | 192 bit |

| Memory bandwidth | 8.19 TB/s | 504.2 GB/s |

| Shading units | 16,384 | 5,888 |

| TMUs | 1,024 | 184 |

| ROPs | 0 | 64 |

| RT cores | None listed | 46 |

| Tensor cores | None listed | 184 |

| Pixel rate | 0 MPixel/s | 158.4 GPixel/s |

| Texture rate | 2,457.6 GTexel/s | 455.4 GTexel/s |

| FP32 | 78.64 TFLOPS | 29.15 TFLOPS |

| FP16 | 78.64 TFLOPS (1:1) | 29.15 TFLOPS (1:1) |

| TDP | 1400 W | 200 W |

| Slot width | OAM Module | Dual-slot |

| Power connectors | None | 1x 16-pin |

| Suggested PSU | 1800 W | 550 W |

| Bus interface | PCIe 5.0 x16 | PCIe 4.0 x16 |

| Display outputs | No outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a |

| DirectX | N/A | 12 Ultimate (12_2) |

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Length | 102 mm | 240 mm |

| Height | Not listed | 110 mm |

| Width | 165 mm | 40 mm |

| Release date | 2025-06-11 | 2024-02-29 |

| Production status | Not listed | End-of-life |