AMD Instinct MI300 vs NVIDIA GeForce RTX 4070 Mobile Comparison

Where Each One Wins

The recorded data separates these two accelerators into entirely different performance domains. The AMD Instinct MI300 has no benchmark entries in the database, resulting in an average benchmark score of 0 and a percentile rank of 50 among all GPUs. The NVIDIA GeForce RTX 4070 Mobile, by contrast, carries nine benchmark results across OpenCL, Vulkan, DirectX, and compute workloads, with an average score of 27,435 and a percentile rank of 73. Every measurable performance win in the head-to-head comparison goes to the NVIDIA part, simply because the AMD part has no recorded measurements.

The RTX 4070 Mobile's strongest recorded result is in Geekbench OpenCL at 109,197 points, followed closely by Geekbench Vulkan at 108,367. These two scores indicate strong general-purpose compute and graphics API performance. In the Passmark suite, the DirectX 9 test returns 223 points, DirectX 11 returns 179, DirectX 10 returns 116, and DirectX 12 returns 85. The Passmark G3D score of 19,587 and the GPU compute score of 8,399 round out the picture. The G2D score of 763 shows a weaker 2D workload showing, which is expected for a discrete-class mobile GPU.

The AMD Instinct MI300, despite its massive hardware specifications, has zero benchmark results in the database. This does not indicate a failure, rather it reflects the product's positioning as a data center accelerator without display outputs and without consumer API support. The architecture is built for compute workloads, but no standardized benchmark scores are available to quantify that performance. The wins column shows 0 for the AMD part and 0 for the NVIDIA part in the head-to-head array, meaning the database has no direct comparison entries. The practical interpretation is that the RTX 4070 Mobile wins every category where data exists, while the MI300 wins none due to absent measurements.

Architecture Differences

The two chips take fundamentally different design paths. The AMD Instinct MI300 uses the CDNA 3.0 architecture with the Aqua Vanjaram chip, built on a 5 nm process at TSMC. The NVIDIA GeForce RTX 4070 Mobile uses the Ada Lovelace architecture with the AD106 chip, also on a 5 nm TSMC process. Both share the same process node, but the similarity ends there.

The MI300 packs 153,000 million transistors onto a 1017 mm² die, yielding a transistor density of 150.4 million per mm². The RTX 4070 Mobile contains 22,900 million transistors on a 188 mm² die, with a density of 121.8 million per mm². The MI300's die is over five times larger and holds nearly seven times more transistors. The shader configuration differs sharply: the MI300 has 14,080 shading units and 880 texture mapping units, while the RTX 4070 Mobile has 4,608 shading units, 144 texture units, and 48 raster operation units. The MI300 reports 0 ROPs and a pixel rate of 0 MPixel/s, confirming it has no rasterization pipeline. The RTX 4070 Mobile delivers 81.36 GPixel/s and 244.1 GTexel/s, while the MI300's texture rate is 1,496.0 GTexel/s.

Memory architecture diverges completely. The MI300 uses 128 GB of HBM3 on an 8192-bit bus, achieving 5.32 TB/s of bandwidth. The RTX 4070 Mobile uses 8 GB of GDDR6 on a 128-bit bus, with 256.0 GB/s of bandwidth. The MI300 has twenty times the memory capacity and over twenty times the bandwidth. The clock behavior also differs: the MI300 runs at a base of 1000 MHz and boosts to 1700 MHz, with memory at 1300 MHz (5.2 Gbps effective). The RTX 4070 Mobile has a higher base clock at 1395 MHz but a nearly identical boost at 1695 MHz, with memory at 2000 MHz (16 Gbps effective).

The MI300 has no ray tracing cores and no tensor cores listed, while the RTX 4070 Mobile includes 36 RT cores and 144 tensor cores. The MI300 also lacks any API support for DirectX, OpenGL, or Vulkan, all marked as N/A. The RTX 4070 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300's power target is 600 W with two 8-pin connectors and a suggested 1000 W PSU, while the RTX 4070 Mobile draws 115 W with no power connectors and is classified as an IGP (integrated graphics package). The MI300 uses PCIe 5.0 x16, the RTX 4070 Mobile uses PCIe 4.0 x8. The MI300 has no display outputs; the RTX 4070 Mobile's outputs are portable device dependent.

The Verdict

The data supports a clear split by workload class. For any client-side graphics, gaming, or general compute task that uses DirectX, Vulkan, or OpenGL, the NVIDIA GeForce RTX 4070 Mobile is the only option with recorded performance. Its benchmark scores confirm it operates at the 73rd percentile among all GPUs, with an average score of 27,435. Its nearest rivals in the database include the AMD Radeon RX 6700 XT at 27,425 (0% delta), the NVIDIA GeForce RTX 3090 at 27,565 (-0.5% delta, meaning the RTX 4070 Mobile trails by half a percent), the NVIDIA RTX PRO 4000 Blackwell at 27,135 (1.1% ahead), and the AMD Radeon Pro Vega 20 at 27,839 (-1.5%, trailing by 1.5%). These deltas show the RTX 4070 Mobile sits squarely in a competitive band with desktop-class cards from the previous generation.

For data center-scale compute without display output, the AMD Instinct MI300 offers hardware resources that dwarf the RTX 4070 Mobile: 128 GB of HBM3, 5.32 TB/s of bandwidth, 14,080 shaders, and a 600 W power envelope. No benchmark data exists to validate its real-world performance, so the database cannot confirm any advantage. The MI300's 50th percentile rank reflects the absence of measurements, not a performance verdict. The architecture targets workloads where rasterization, ray tracing, and consumer graphics APIs are irrelevant. The RTX 4070 Mobile targets laptops and portable devices where power draw, display output, and API compatibility matter.

The recorded data indicates that a buyer seeking measured performance should choose the RTX 4070 Mobile. A buyer deploying a server accelerator with massive memory bandwidth and no graphics output would select the MI300 based on its specifications alone, accepting that no benchmark scores are available to quantify its throughput.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA GeForce RTX 4070 Mobile has an average benchmark score of 27,435. The AMD Instinct MI300 has an average score of 0 because no benchmarks are recorded for it.

Q: How much memory do the two GPUs have?

A: The AMD Instinct MI300 has 128 GB of HBM3 memory on an 8192-bit bus. The NVIDIA GeForce RTX 4070 Mobile has 8 GB of GDDR6 memory on a 128-bit bus.

Q: What is the memory bandwidth difference?

A: The MI300 delivers 5.32 TB/s of bandwidth, while the RTX 4070 Mobile delivers 256.0 GB/s. The MI300's bandwidth is over twenty times higher.

Q: Does the AMD Instinct MI300 support DirectX or Vulkan?

A: No. The MI300 lists DirectX, OpenGL, and Vulkan as N/A. The RTX 4070 Mobile supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Q: How does the RTX 4070 Mobile compare to its nearest rivals?

A: The RTX 4070 Mobile scores 0% delta against the AMD Radeon RX 6700 XT, -0.5% against the GeForce RTX 3090, 1.1% ahead of the RTX PRO 4000 Blackwell, and -1.5% against the Radeon Pro Vega 20.

Q: What is the power requirement for each GPU?

A: The MI300 has a TDP of 600 W with two 8-pin power connectors and a suggested 1000 W PSU. The RTX 4070 Mobile has a TDP of 115 W with no power connectors.

Head-to-Head Benchmarks

The head-to-head benchmark array in the database is empty, so no direct paired comparisons exist. The available data comes from the RTX 4070 Mobile's individual benchmark list. The strongest result is Geekbench OpenCL at 109,197, which shows the chip's compute capability under the OpenCL framework. The Geekbench Vulkan score of 108,367 is nearly identical, indicating consistent performance across both APIs. The Passmark G3D score of 19,587 places the GPU in the upper quartile of all GPUs, consistent with its 73rd percentile rank.

The Passmark DirectX tests show a descending pattern from older to newer API versions: DirectX 9 at 223, DirectX 11 at 179, DirectX 10 at 116, and DirectX 12 at 85. This suggests the architecture handles legacy workloads more efficiently than modern API features in the Passmark suite, though the absolute scores are not directly comparable across tests. The Passmark GPU compute score of 8,399 is lower than the G3D score, reflecting the difference between graphics rendering and compute workloads. The G2D score of 763 is the lowest recorded, typical for a GPU focused on 3D acceleration.

Against its nearest rivals, the RTX 4070 Mobile is essentially tied with the Radeon RX 6700 XT (delta 0%), less than 1% behind the RTX 3090 (-0.5%), slightly ahead of the RTX PRO 4000 Blackwell (1.1%), and about 1.5% behind the Radeon Pro Vega 20 (-1.5%). These margins are within measurement noise, meaning the RTX 4070 Mobile delivers desktop-class performance in a mobile package. The AMD Instinct MI300 has no scores, so no comparative benchmarks can be drawn. The database records zero wins for either side in the head-to-head field.

Specification Differences

The two GPUs differ in nearly every measurable specification. The MI300 uses the Aqua Vanjaram chip with CDNA 3.0 architecture, while the RTX 4070 Mobile uses AD106 with Ada Lovelace. Both are manufactured on TSMC's 5 nm process, but the MI300's die is 1017 mm² versus 188 mm² for the RTX 4070 Mobile. Transistor counts are 153,000 million versus 22,900 million, with densities of 150.4M/mm² and 121.8M/mm² respectively.

The MI300 has 14,080 shading units and 880 TMUs, while the RTX 4070 Mobile has 4,608 shading units, 144 TMUs, and 48 ROPs. The MI300 has 0 ROPs and a 0 MPixel/s pixel rate. The MI300's texture rate is 1,496.0 GTexel/s versus 244.1 GTexel/s for the RTX 4070 Mobile. Floating-point performance shows 47.87 TFLOPS for the MI300 in both FP32 and FP16 (1:1 ratio), while the RTX 4070 Mobile delivers 15.62 TFLOPS in both, also at 1:1.

Clock speeds differ in base frequency: the MI300 runs at 1000 MHz base and 1700 MHz boost, the RTX 4070 Mobile at 1395 MHz base and 1695 MHz boost. Memory clocks are 1300 MHz (5.2 Gbps effective) for the MI300 and 2000 MHz (16 Gbps effective) for the RTX 4070 Mobile. Memory capacity is 128 GB HBM3 versus 8 GB GDDR6, with bus widths of 8192-bit and 128-bit. Bandwidth is 5.32 TB/s versus 256.0 GB/s.

The MI300 has no RT cores or tensor cores listed; the RTX 4070 Mobile has 36 RT cores and 144 tensor cores. Power consumption is 600 W versus 115 W. The MI300 uses two 8-pin connectors and requires a 1000 W PSU; the RTX 4070 Mobile uses no connectors and has no PSU suggestion. Bus interfaces are PCIe 5.0 x16 versus PCIe 4.0 x8. Display outputs are absent on the MI300 and portable device dependent on the RTX 4070 Mobile. The MI300 has no API support, while the RTX 4070 Mobile supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The MI300 measures 267 mm by 111 mm; the RTX 4070 Mobile has no recorded dimensions.