AMD Instinct MI300 vs NVIDIA GeForce RTX 4070 GDDR6 Comparison

Head-to-Head Benchmarks

The recorded data contains no direct head-to-head benchmark results between the AMD Instinct MI300 and the NVIDIA GeForce RTX 4070 GDDR6. The database shows only a single benchmark entry for the RTX 4070 GDDR6, a 3DMark Steel Nomad DX12 score of 4334.5, while the MI300 has no benchmark scores recorded. The MI300's percentile ranking against all GPUs sits at 50, while the RTX 4070 GDDR6 ranks at the 25th percentile. The RTX 4070 GDDR6's average benchmark score is 4335.

The nearest rivals for the RTX 4070 GDDR6 in the database are all older or lower-tier parts. The Intel Iris Pro Graphics 5200 posts an average score of 4360, which is 0.6% higher than the RTX 4070 GDDR6's score. The NVIDIA GeForce 930M scores 4388, 1.2% higher. The AMD FirePro W2100 scores 4295, 0.9% lower, and the NVIDIA GeForce GTX 460M scores 4282, 1.2% lower. These deltas are small, placing the RTX 4070 GDDR6 in a narrow band around these legacy parts in this particular test, though the architectural gulf between them is substantial.

The MI300 has no nearest rivals listed and no benchmark entries, so its 50th percentile ranking reflects an absence of measured performance data rather than a competitive position. The data cannot support any claim of superiority for either product in direct computational workloads. What the database does show is a stark contrast in design goals, feature sets, and target applications.

Architecture Differences

The MI300 uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, built on a 5 nm process at TSMC. The RTX 4070 GDDR6 uses the Ada Lovelace architecture on the AD104 chip, also on a 5 nm process at TSMC. Both share the same process node and foundry, but the similarities end there.

Transistor counts diverge massively. The MI300 packs 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4M per mm². The RTX 4070 GDDR6 contains 35,800 million transistors on a 294 mm² die, with a density of 121.8M per mm². The MI300's die is more than three times larger and carries more than four times the transistor count.

Memory architecture could not be more different. The MI300 uses 128 GB of HBM3 across an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The RTX 4070 GDDR6 uses 12 GB of GDDR6 on a 192-bit bus, with 480.0 GB/s of bandwidth. The MI300 offers roughly 10.7 times the memory capacity and over 11 times the bandwidth. The MI300's memory clock is 1300 MHz with 5.2 Gbps effective, while the RTX 4070 GDDR6 runs at 2500 MHz with 20 Gbps effective.

Compute resources differ accordingly. The MI300 has 14,080 shading units, 880 texture mapping units, and zero ROPs. The RTX 4070 GDDR6 has 5,888 shading units, 184 TMUs, and 64 ROPs. The MI300 has no RT cores and no tensor cores listed, while the RTX 4070 GDDR6 includes 46 RT cores and 184 tensor cores. The MI300's pixel rate is recorded as 0 MPixel/s, while the RTX 4070 GDDR6 delivers 158.4 GPixel/s. Texture rates are 1,496.0 GTexel/s for the MI300 versus 455.4 GTexel/s for the RTX 4070 GDDR6. FP32 throughput measures 47.87 TFLOPS for the MI300 and 29.15 TFLOPS for the RTX 4070 GDDR6, with both offering FP16 at a 1:1 ratio.

Clock behavior also separates the two. The MI300 has a base clock of 1000 MHz and a boost of 1700 MHz. The RTX 4070 GDDR6 runs at 1920 MHz base and 2475 MHz boost. The RTX 4070 GDDR6's higher clocks partially compensate for its fewer cores, but the MI300 still holds a 64% lead in FP32 throughput.

The MI300 has no display outputs, no DirectX, OpenGL, or Vulkan API support listed in the database. The RTX 4070 GDDR6 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, with outputs of 1x HDMI 2.1 and 3x DisplayPort 1.4a. The MI300 is a compute accelerator without graphics output, while the RTX 4070 GDDR6 is a full graphics card.

Where Each One Wins

The MI300 wins decisively in raw compute throughput. Its FP32 figure of 47.87 TFLOPS is 64% higher than the RTX 4070 GDDR6's 29.15 TFLOPS. Texture rate is over three times higher at 1,496.0 GTexel/s versus 455.4 GTexel/s. Memory bandwidth is an order of magnitude greater, and memory capacity is more than ten times larger. For workloads that scale with memory size or bandwidth, such as large matrix operations or data-intensive inference, the MI300's specifications indicate a clear advantage.

The RTX 4070 GDDR6 wins in graphics-oriented features. It has 64 ROPs and a pixel rate of 158.4 GPixel/s, while the MI300 has zero ROPs and a zero pixel rate. The RTX 4070 GDDR6 includes RT cores and tensor cores, which the MI300 lacks entirely. It also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI300 has no API support recorded. Any workload requiring rasterization, ray tracing, or standard graphics APIs falls exclusively to the RTX 4070 GDDR6.

Clock speed favors the RTX 4070 GDDR6. Its base clock of 1920 MHz is nearly double the MI300's 1000 MHz, and its boost of 2475 MHz is 46% higher than the MI300's 1700 MHz. For latency-sensitive workloads that do not parallelize perfectly, the higher clocks could provide an edge, though the database does not include benchmark data to confirm this.

The RTX 4070 GDDR6 also wins on power efficiency. Its TDP is 200 W versus the MI300's 600 W, and its suggested PSU is 550 W versus 1000 W. The RTX 4070 GDDR6 delivers 29.15 TFLOPS at 200 W, a ratio of roughly 0.146 TFLOPS per watt, while the MI300 delivers 47.87 TFLOPS at 600 W, a ratio of roughly 0.080 TFLOPS per watt. The RTX 4070 GDDR6 is nearly twice as efficient per watt in FP32 throughput.

Specification Differences

| Specification | AMD Instinct MI300 | NVIDIA GeForce RTX 4070 GDDR6 |

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

| Architecture | CDNA 3.0 | Ada Lovelace |

| Chip | Aqua Vanjaram | AD104 |

| 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 | 1700 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 | 8192 bit | 192 bit |

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

| Shading Units | 14080 | 5888 |

| TMUs | 880 | 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 | 1,496.0 GTexel/s | 455.4 GTexel/s |

| FP32 | 47.87 TFLOPS | 29.15 TFLOPS |

| FP16 | 47.87 TFLOPS (1:1) | 29.15 TFLOPS (1:1) |

| TDP | 600 W | 200 W |

| Power Connectors | 2x 8-pin | 1x 16-pin |

| Suggested PSU | 1000 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 | 267 mm | 240 mm |

| Height | 111 mm | 110 mm |

| Width | Not listed | 40 mm |

| Slot Width | Not listed | Dual-slot |

| Release Date | 2023-01-03 | 2024-08-19 |

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

| Predecessor | Radeon Instinct | GeForce 30 |

| Successor | Not listed | GeForce 50 |

| Launch MSRP | Not listed | 599 USD |

The MI300 draws power through 2x 8-pin connectors, while the RTX 4070 GDDR6 uses a single 16-pin connector. The MI300 uses PCIe 5.0 x16, while the RTX 4070 GDDR6 uses PCIe 4.0 x16. Physical dimensions show the MI300 is longer at 267 mm versus 240 mm, and taller at 111 mm versus 110 mm. The RTX 4070 GDDR6 has a width of 40 mm and is dual-slot, while the MI300's width and slot width are not recorded.

FAQ

Q: Which GPU has higher FP32 compute throughput?

A: The AMD Instinct MI300 delivers 47.87 TFLOPS, which is 64% higher than the NVIDIA GeForce RTX 4070 GDDR6's 29.15 TFLOPS.

Q: How do memory capacities compare?

A: The MI300 has 128 GB of HBM3, while the RTX 4070 GDDR6 has 12 GB of GDDR6. The MI300's capacity is over ten times larger.

Q: Does either card support ray tracing?

A: The RTX 4070 GDDR6 has 46 RT cores. The MI300 has no RT cores listed in the database.

Q: What is the power consumption difference?

A: The MI300 has a TDP of 600 W with a suggested PSU of 1000 W. The RTX 4070 GDDR6 has a TDP of 200 W with a suggested PSU of 550 W.

Q: Which card can output video to displays?

A: Only the RTX 4070 GDDR6 has display outputs, with 1x HDMI 2.1 and 3x DisplayPort 1.4a. The MI300 has no outputs.

Q: What is the launch MSRP of the RTX 4070 GDDR6?

A: The launch MSRP is 599 USD. The MI300 has no launch MSRP recorded.

The Verdict

The data separates these two products into entirely different categories. The AMD Instinct MI300 is a compute accelerator with no graphics output, no rasterization hardware, no RT cores, and no consumer API support. Its strengths lie in raw FP32 throughput, massive memory capacity, and extraordinary bandwidth. The NVIDIA GeForce RTX 4070 GDDR6 is a conventional graphics card with display outputs, full DirectX 12 Ultimate support, 64 ROPs, 46 RT cores, and 184 tensor cores.

For applications that need graphics rendering, ray tracing, or standard API compatibility, the RTX 4070 GDDR6 is the only option that matches those requirements. It also offers higher clock speeds, lower power draw, and better FP32 efficiency per watt. For compute-heavy workloads that can use the MI300's 128 GB of HBM3 and 5.32 TB/s bandwidth, the MI300's specifications indicate a clear advantage in capacity and throughput.

The RTX 4070 GDDR6's benchmark score of 4334.5 in 3DMark Steel Nomad DX12 and its 25th percentile ranking reflect its position among all GPUs, but the MI300 has no recorded benchmarks, so no direct performance comparison is possible from the database. The nearest rivals for the RTX 4070 GDDR6 are all within 1.2% of its score, which suggests the benchmark result is not representative of its class-leading capabilities.

The release dates differ by about nineteen months, with the MI300 launching on 2023-01-03 and the RTX 4070 GDDR6 on 2024-08-19. The RTX 4070 GDDR6 is marked as end-of-life with a successor in the GeForce 50 series, while the MI300's production status and successor are not recorded. The MI300's predecessor is listed as Radeon Instinct, and the RTX 4070 GDDR6's predecessor is GeForce 30.

The choice depends strictly on workload requirements. For a system needing graphics output, ray tracing, tensor operations, and a compact 240 mm dual-slot card, the RTX 4070 GDDR6 is the data-supported selection. For a system needing maximum memory capacity, bandwidth, and FP32 throughput without any graphics output, the MI300 is the data-supported selection. The two do not compete in the same application space, and the database does not contain evidence to place them in direct competition.