AMD Instinct MI325X vs NVIDIA RTX 1000 Mobile Ada Generation Comparison

FAQ

Q: What are the core architectural identities of the AMD Instinct MI325X and the NVIDIA RTX 1000 Mobile Ada Generation?

A: The AMD Instinct MI325X is built on the CDNA 3.0 architecture with the Aqua Vanjaram chip, while the NVIDIA RTX 1000 Mobile Ada Generation uses the Ada Lovelace architecture with the AD107 chip. Both are manufactured on a 5 nm process at TSMC.

Q: How do the memory specifications compare between the two GPUs?

A: The AMD Instinct MI325X carries 256 GB of HBM3e memory on an 8192-bit bus with 6.14 TB/s bandwidth. The NVIDIA RTX 1000 Mobile Ada Generation has 6 GB of GDDR6 on a 96-bit bus with 192.0 GB/s bandwidth. The AMD part offers vastly larger capacity and bandwidth.

Q: What are the respective shading unit counts and FP32 performance figures?

A: The AMD Instinct MI325X has 19,456 shading units and delivers 81.72 TFLOPS FP32. The NVIDIA RTX 1000 Mobile Ada Generation has 2,560 shading units and delivers 10.37 TFLOPS FP32. The AMD accelerator leads by a factor of roughly 7.9x in raw shading throughput.

Q: Which GPU supports real-time ray tracing and what is the core count?

A: The NVIDIA RTX 1000 Mobile Ada Generation includes 20 RT cores and 80 tensor cores, enabling hardware-accelerated ray tracing and AI workloads. The AMD Instinct MI325X has no listed RT cores or tensor cores, as its CDNA 3.0 design targets compute acceleration rather than graphics features.

Q: What is the difference in power consumption between the two parts?

A: The AMD Instinct MI325X has a TDP of 1000 W and requires a suggested PSU of 1400 W, while the NVIDIA RTX 1000 Mobile Ada Generation has a TDP of 35 W. The NVIDIA part is an IGP (integrated graphics processor) for mobile devices, whereas the AMD part is an OAM module.

Q: What API support does each GPU provide?

A: The NVIDIA RTX 1000 Mobile Ada Generation supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD Instinct MI325X has no API support listed for DirectX, OpenGL, or Vulkan, consistent with its server-accelerator role.

Architecture Differences

The AMD Instinct MI325X and NVIDIA RTX 1000 Mobile Ada Generation represent fundamentally different design philosophies. The AMD part is a dense compute accelerator built on CDNA 3.0, featuring 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million transistors per square millimeter. The NVIDIA part operates on Ada Lovelace with 18,900 million transistors on a 159 mm² die, achieving a density of 118.9 million per square millimeter. The AMD chip is roughly 6.4x larger in die area and 8.1x higher in transistor count.

The AMD Instinct MI325X deploys 19,456 shading units, 1,216 texture mapping units, and zero ROPs, with a pixel rate of 0 MPixel/s. It has no dedicated RT cores or tensor cores, and its API support is listed as N/A for DirectX, OpenGL, and Vulkan. This is a pure compute device designed for data-center workloads, not graphics output. Its texture rate is 2,553.6 GTexel/s, and its FP16 throughput matches FP32 at 81.72 TFLOPS (1:1 ratio).

The NVIDIA RTX 1000 Mobile Ada Generation includes 2,560 shading units, 80 TMUs, 48 ROPs, 20 RT cores, and 80 tensor cores. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and it has display outputs described as "Portable Device Dependent." Its pixel rate is 97.20 GPixel/s, and its texture rate is 162.0 GTexel/s. FP16 performance is 10.37 TFLOPS (1:1), identical to its FP32 figure.

The memory subsystems are equally divergent. The AMD part uses HBM3e with 256 GB capacity, an 8192-bit bus, and 6.14 TB/s bandwidth, with a memory clock of 1500 MHz (6 Gbps effective). The NVIDIA part uses GDDR6 with 6 GB capacity, a 96-bit bus, and 192.0 GB/s bandwidth, clocked at 2000 MHz (16 Gbps effective). The AMD accelerator offers 32x more memory capacity and roughly 32x more bandwidth. The bus interface also differs: the AMD module uses PCIe 5.0 x16, while the NVIDIA mobile part uses PCIe 4.0 x8.

Clock speeds show a different trade-off. The AMD Instinct MI325X has a base clock of 1000 MHz and a boost clock of 2100 MHz. The NVIDIA RTX 1000 Mobile Ada Generation has a base clock of 1485 MHz and a boost clock of 2025 MHz. The NVIDIA part starts at a higher base frequency, but the AMD part reaches a slightly higher boost. Power envelopes are the starkest contrast: 1000 W TDP for the AMD OAM module versus 35 W TDP for the NVIDIA IGP. The AMD part has no power connectors (it relies on the OAM slot), and the NVIDIA part likewise has no external power connectors.

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the AMD Instinct MI325X and the NVIDIA RTX 1000 Mobile Ada Generation. Neither GPU has an average benchmark score, and both sit at the 50th percentile against all GPUs in the database. Their nearest rivals lists are empty, and the wins counter shows zero for each side. The comparison must therefore rest on the technical specifications and architectural metrics provided.

In raw compute throughput, the AMD Instinct MI325X delivers 81.72 TFLOPS FP32, which is 7.9x the 10.37 TFLOPS of the NVIDIA RTX 1000 Mobile Ada Generation. The texture rate shows a similar gap: 2,553.6 GTexel/s versus 162.0 GTexel/s, a factor of 15.8x. The NVIDIA part counteracts with a pixel rate of 97.20 GPixel/s, while the AMD part reports 0 MPixel/s, confirming that the AMD accelerator cannot rasterize graphics. The NVIDIA part also brings 20 RT cores and 80 tensor cores, features entirely absent from the AMD specification.

Memory bandwidth is another decisive separation. The AMD Instinct MI325X offers 6.14 TB/s, which is 32x the 192.0 GB/s of the NVIDIA RTX 1000 Mobile Ada Generation. Capacity differs by a factor of 42.7x: 256 GB versus 6 GB. The AMD part uses HBM3e on an 8192-bit bus, while the NVIDIA part uses GDDR6 on a 96-bit bus. These figures indicate that the AMD accelerator is built for massive data movement, while the NVIDIA part targets constrained mobile workloads.

The transistor counts reinforce the performance intent. The AMD Instinct MI325X packs 153,000 million transistors, which is 8.1x the 18,900 million in the NVIDIA part. Die size is 1017 mm² versus 159 mm², a 6.4x difference. The AMD chip's higher transistor density (150.4M per mm² versus 118.9M per mm²) suggests a more compact logic layout despite the larger overall die. The power envelope scales accordingly: 1000 W versus 35 W, a 28.6x difference that makes the AMD part unsuitable for any mobile or desktop graphics role.

The clock behavior offers a nuanced contrast. The NVIDIA RTX 1000 Mobile Ada Generation has a base clock of 1485 MHz, which is 48.5% higher than the AMD part's 1000 MHz base. The boost clocks are closer: 2025 MHz for NVIDIA versus 2100 MHz for AMD, a 3.7% advantage for the AMD part. This indicates that the NVIDIA mobile GPU sustains higher frequencies at its low 35 W power budget, while the AMD accelerator leverages its massive power allocation to reach a higher peak.

The Verdict

The data indicates two entirely different product categories. The AMD Instinct MI325X is a data-center compute accelerator with 256 GB of HBM3e, 81.72 TFLOPS FP32, and a 1000 W TDP. It has no display outputs, no graphics APIs, and no rasterization capability. The NVIDIA RTX 1000 Mobile Ada Generation is a mobile integrated GPU with 6 GB of GDDR6, 10.37 TFLOPS FP32, 20 RT cores, 80 tensor cores, and full DirectX 12 Ultimate support, all within a 35 W envelope.

For compute-heavy workloads that require massive memory capacity and bandwidth, the AMD Instinct MI325X is the clear choice based on its 6.14 TB/s bandwidth and 256 GB capacity. For mobile graphics, ray tracing, AI inference on portable devices, and any application requiring display output, the NVIDIA RTX 1000 Mobile Ada Generation is the only viable option, since the AMD part cannot output video or run standard graphics APIs. The 28.6x power difference (1000 W versus 35 W) makes the AMD accelerator physically incompatible with mobile systems, while the NVIDIA part's 35 W TDP and IGP form factor preclude any data-center compute role.

Users who need FP32 or FP16 throughput at scale should select the AMD Instinct MI325X, which provides 7.9x the shading power of the NVIDIA part. Users who need ray tracing, tensor acceleration, or a functional graphics pipeline should select the NVIDIA RTX 1000 Mobile Ada Generation, which is the only one of the two with RT cores, tensor cores, and API support. The AMD part's 0 MPixel/s pixel rate and N/A API entries confirm it cannot serve as a graphics card. The NVIDIA part's 192.0 GB/s bandwidth and 6 GB capacity limit it to modest workloads, but its feature set is complete for mobile use.

Specification Differences

| Specification | AMD Instinct MI325X | NVIDIA RTX 1000 Mobile Ada Generation |

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

| Architecture | CDNA 3.0 | Ada Lovelace |

| Chip | Aqua Vanjaram | AD107 |

| Process Node | 5 nm | 5 nm |

| Foundry | TSMC | TSMC |

| Transistors | 153,000 million | 18,900 million |

| Die Size | 1017 mm² | 159 mm² |

| Transistor Density | 150.4M / mm² | 118.9M / mm² |

| Base Clock | 1000 MHz | 1485 MHz |

| Boost Clock | 2100 MHz | 2025 MHz |

| Memory Clock | 1500 MHz (6 Gbps effective) | 2000 MHz (16 Gbps effective) |

| Memory Size | 256 GB | 6 GB |

| Memory Type | HBM3e | GDDR6 |

| Memory Bus Width | 8192 bit | 96 bit |

| Memory Bandwidth | 6.14 TB/s | 192.0 GB/s |

| Shading Units | 19,456 | 2,560 |

| TMUs | 1,216 | 80 |

| ROPs | 0 | 48 |

| RT Cores | None | 20 |

| Tensor Cores | None | 80 |

| Pixel Rate | 0 MPixel/s | 97.20 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 162.0 GTexel/s |

| FP32 Performance | 81.72 TFLOPS | 10.37 TFLOPS |

| FP16 Performance | 81.72 TFLOPS (1:1) | 10.37 TFLOPS (1:1) |

| TDP | 1000 W | 35 W |

| Slot Width | OAM Module | IGP |

| Power Connectors | None | None |

| Suggested PSU | 1400 W | None |

| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x8 |

| Display Outputs | No outputs | Portable Device Dependent |

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

| OpenGL Support | N/A | 4.6 |

| Vulkan Support | N/A | 1.4 |

| Release Date | 2024-10-09 | 2024-02-25 |

| Predecessor | Radeon Instinct | Ampere-MW |

| Successor | None | Blackwell-MW |

| Production Status | Not listed | Active |