AMD Instinct MI300A vs NVIDIA GeForce RTX 4070 GDDR6 Comparison

FAQ

Q: What are the core architectural identities of the AMD Instinct MI300A and the NVIDIA GeForce RTX 4070 GDDR6?

A: The AMD Instinct MI300A uses the CDNA 3.0 architecture with the Aqua Vanjaram chip, while the NVIDIA GeForce RTX 4070 GDDR6 uses the Ada Lovelace architecture with the AD104 chip. Both are fabricated on a 5 nm process at TSMC.

Q: How do the two compare in memory capacity and bandwidth?

A: The MI300A has 128 GB of HBM3 memory on an 8192-bit bus, delivering 5.32 TB/s. The RTX 4070 GDDR6 has 12 GB of GDDR6 memory on a 192-bit bus, delivering 480.0 GB/s. The MI300A has roughly 11 times the bandwidth.

Q: Which card has more shading units and texture units?

A: The MI300A has 14,592 shading units and 912 texture mapping units. The RTX 4070 GDDR6 has 5,888 shading units and 184 TMUs. The MI300A leads by a wide margin in both counts.

Q: What is the difference in power consumption?

A: The MI300A has a TDP of 750 W and requires a suggested PSU of 1150 W. The RTX 4070 GDDR6 has a TDP of 200 W with a suggested PSU of 550 W.

Q: Does the RTX 4070 GDDR6 support real-time ray tracing?

A: Yes, the RTX 4070 GDDR6 includes 46 RT cores and 184 tensor cores, with DirectX 12 Ultimate (12_2) API support. The MI300A lists no RT cores or tensor cores and has no DirectX API support.

Q: What is the release timeline for both products?

A: The AMD Instinct MI300A was released on December 5, 2023. The NVIDIA GeForce RTX 4070 GDDR6 was released on August 19, 2024, and its production status is listed as end-of-life.

Architecture Differences

The AMD Instinct MI300A is built on CDNA 3.0, a compute-optimized architecture derived from AMD's data center lineage. It uses the Aqua Vanjaram chip, a massive die of 1017 mm² containing 153,000 million transistors. The 5 nm process yields a transistor density of 150.4 million per mm². The MI300A is memory-heavy by design, pairing 128 GB of HBM3 with an 8192-bit bus. Its 14,592 shading units and 912 TMUs indicate a raw compute throughput focus, with a 61.29 TFLOPS FP32 rate. It has no pixel rate (0 MPixel/s) and no display outputs, confirming it is not intended for graphics output.

The NVIDIA GeForce RTX 4070 GDDR6 uses the Ada Lovelace architecture and the AD104 chip. With 35,800 million transistors on a 294 mm² die, the density is 121.8 million per mm². The RTX 4070 GDDR6 has 5,888 shading units, 184 TMUs, and 64 ROPs. It includes 46 RT cores and 184 tensor cores, enabling ray tracing and AI acceleration. The memory subsystem uses 12 GB of GDDR6 on a 192-bit bus. The pixel rate is 158.4 GPixel/s and the texture rate is 455.4 GTexel/s. The card supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, along with display outputs of 1x HDMI 2.1 and 3x DisplayPort 1.4a.

The key architectural divergence is purpose. The MI300A is a compute accelerator with no graphics pipeline, hence zero ROPs, no pixel output, and no API support. The RTX 4070 GDDR6 is a full graphics card with a complete rasterization and ray tracing feature set. The MI300A prioritizes memory bandwidth and FP32 throughput, while the RTX 4070 GDDR6 balances graphics features with compute capabilities. The process node is identical (5 nm, TSMC), but the transistor counts differ by a factor of roughly 4.3, with the MI300A carrying the larger investment in silicon.

The Verdict

The data indicates two distinct product classes. The AMD Instinct MI300A is a data center compute module with 128 GB of HBM3 memory, 5.32 TB/s bandwidth, and 61.29 TFLOPS FP32. It has no display outputs, no graphics API support, and a TDP of 750 W. It is designed for massive parallel compute workloads where memory capacity and bandwidth are critical.

The NVIDIA GeForce RTX 4070 GDDR6 is a consumer graphics card with 12 GB of GDDR6 memory, 480.0 GB/s bandwidth, and 29.15 TFLOPS FP32. It includes 46 RT cores, 184 tensor cores, and full graphics API support. Its TDP is 200 W. It is designed for gaming, ray tracing, and general desktop use.

Benchmark data for the RTX 4070 GDDR6 shows a 3DMark Steel Nomad DX12 score of 4334.5, placing it in the 25th percentile among all GPUs. Its nearest rivals in the database are all older or lower-tier parts: the Intel Iris Pro Graphics 5200 (4360, -0.6% delta), AMD FirePro W2100 (4295, +0.9%), NVIDIA GeForce 930M (4388, -1.2%), and NVIDIA GeForce GTX 460M (4282, +1.2%). These deltas are all within 1.2%, indicating the RTX 4070 GDDR6 sits in a narrow performance band relative to these legacy parts in this specific benchmark.

The MI300A has no benchmark scores recorded in the database, so direct performance comparison is not possible. The verdict is straightforward: the MI300A is for compute-centric deployments requiring massive memory and bandwidth, while the RTX 4070 GDDR6 is for graphics workloads with ray tracing and display output. Neither product serves the other's primary use case.

Specification Differences

| Field | AMD Instinct MI300A | NVIDIA GeForce RTX 4070 GDDR6 |

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

| Architecture | CDNA 3.0 | Ada Lovelace |

| Chip | Aqua Vanjaram | AD104 |

| Generation | Instinct (MIx) | GeForce 40 |

| Transistors | 153,000 million | 35,800 million |

| Die Size | 1017 mm² | 294 mm² |

| Transistor Density | 150.4M / mm² | 121.8M / mm² |

| Base Clock | 1000 MHz | 1920 MHz |

| Boost Clock | 2100 MHz | 2475 MHz |

| Memory Clock | 1300 MHz (5.2 Gbps effective) | 2500 MHz (20 Gbps effective) |

| Memory Size | 128 GB | 12 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 8192 bit | 192 bit |

| Memory Bandwidth | 5.32 TB/s | 480.0 GB/s |

| Shading Units | 14,592 | 5,888 |

| TMUs | 912 | 184 |

| ROPs | 0 | 64 |

| RT Cores | None | 46 |

| Tensor Cores | None | 184 |

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

| Texture Rate | 1,915.2 GTexel/s | 455.4 GTexel/s |

| FP32 | 61.29 TFLOPS | 29.15 TFLOPS |

| FP16 | Not specified | 29.15 TFLOPS (1:1) |

| TDP | 750 W | 200 W |

| Slot Width | OAM Module | Dual-slot |

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

| Suggested PSU | 1150 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 |

| Dimensions | Not specified | 240 mm x 110 mm x 40 mm |

| Release Date | 2023-12-05 | 2024-08-19 |

| Production Status | Not specified | End-of-life |

| Predecessor | Radeon Instinct | GeForce 30 |

| Successor | None | GeForce 50 |

| Launch MSRP | None | 599 USD |

Head-to-Head Benchmarks

The database contains no shared benchmark entries for the two products, so direct head-to-head scores are unavailable. The MI300A has no recorded benchmark results, while the RTX 4070 GDDR6 has a single 3DMark Steel Nomad DX12 score of 4334.5.

For the RTX 4070 GDDR6, the closest rival is the Intel Iris Pro Graphics 5200 with an average score of 4360, a delta of -0.6%. That means the RTX 4070 GDDR6 trails that specific integrated GPU by 0.6% in this benchmark. Against the AMD FirePro W2100 (4295), the RTX 4070 GDDR6 leads by 0.9%. Against the NVIDIA GeForce 930M (4388), it trails by 1.2%. Against the NVIDIA GeForce GTX 460M (4282), it leads by 1.2%. These deltas are all under 1.3%, placing the RTX 4070 GDDR6 in a tight cluster with these legacy parts in Steel Nomad DX12.

The MI300A's percentile ranking is 50 among all GPUs, but this is based on no benchmark data, so it carries little analytical weight. The RTX 4070 GDDR6's percentile is 25, reflecting its position relative to the full database population.

Without shared benchmarks, the analysis must rely on architectural specifications. The MI300A's FP32 throughput of 61.29 TFLOPS is approximately 2.1 times the RTX 4070 GDDR6's 29.15 TFLOPS. The MI300A's texture rate of 1,915.2 GTexel/s is approximately 4.2 times the RTX 4070 GDDR6's 455.4 GTexel/s. The MI300A's memory bandwidth of 5.32 TB/s is approximately 11.1 times the RTX 4070 GDDR6's 480.0 GB/s. These ratios are direct from the recorded specifications.

The RTX 4070 GDDR6 has a pixel rate of 158.4 GPixel/s, while the MI300A lists 0 MPixel/s, confirming the MI300A cannot rasterize. The RTX 4070 GDDR6 has 64 ROPs versus none for the MI300A. The RTX 4070 GDDR6 has 46 RT cores and 184 tensor cores, features absent from the MI300A's specification.

In power terms, the MI300A's 750 W TDP is 3.75 times the RTX 4070 GDDR6's 200 W. The MI300A's suggested PSU of 1150 W is over twice the RTX 4070 GDDR6's 550 W. These figures reflect the MI300A's data center orientation versus the RTX 4070 GDDR6's desktop efficiency profile.

The release gap is also notable: the MI300A launched on December 5, 2023, while the RTX 4070 GDDR6 launched on August 19, 2024, and is already listed as end-of-life. The MI300A has no successor in the database, while the RTX 4070 GDDR6's successor is listed as the GeForce 50 series.