AMD Instinct MI355X vs NVIDIA RTX PRO 2000 Blackwell Comparison

Head-to-Head Benchmarks

The recorded database contains benchmark scores for the NVIDIA RTX PRO 2000 Blackwell, while the AMD Instinct MI355X has no benchmark entries in the database. This absence of data for the AMD part in the benchmark suite means no direct head-to-head comparison can be made from the measured results. The RTX PRO 2000 Blackwell delivers an average benchmark score of 25,269 across its recorded tests, placing it in the 70th percentile of all GPUs tracked by the database.

In the 3DMark Steel Nomad DX12 test, the RTX PRO 2000 Blackwell produces a score of 2,374.5. The Geekbench OpenCL result reaches 106,087, while the Vulkan score is higher at 113,865, indicating that the Vulkan API path extracts slightly more performance from the hardware than OpenCL in the recorded workload. PassMark results show a G3D score of 20,049 and a GPU compute score of 8,396. The DirectX legacy tests reveal a pattern where older API versions deliver higher scores: DirectX 9 scores 241, DirectX 11 scores 174, DirectX 10 scores 122, and DirectX 12 scores 80.

The nearest rival data in the database places the RTX PRO 2000 Blackwell in a tight competitive cluster. The AMD Radeon RX 6700M holds an average score of 25,633, which is 1.4% higher than the RTX PRO 2000 Blackwell. The AMD Radeon Pro W5700 averages 25,726, a 1.8% advantage. The NVIDIA GeForce RTX 3080 Ti Mobile also sits 1.8% ahead with an average score of 25,740. The NVIDIA RTX A5000 Mobile trails by 2%, averaging 24,763. The RTX PRO 2000 Blackwell thus sits within a narrow band of roughly 2% above or below its nearest tracked competitors.

The AMD Instinct MI355X, with no benchmark scores recorded, cannot be positioned relative to these results. Its percentile ranking of 50 with an average benchmark score of 0 reflects the absence of measured data rather than a performance assessment. The database records its theoretical specifications, but no application-level test results exist for this part.

Where Each One Wins

The RTX PRO 2000 Blackwell demonstrates measurable wins in every benchmark category where data exists, simply because it is the only one of the two parts with recorded results. Its strongest absolute scores appear in compute-oriented tests: Geekbench Vulkan at 113,865 and Geekbench OpenCL at 106,087 both exceed the PassMark GPU compute score of 8,396 by a substantial margin. This suggests the RTX PRO 2000 Blackwell handles general-purpose compute workloads more efficiently than its DirectX rasterization workloads, based on the relative scores across test types.

The AMD Instinct MI355X wins on paper in raw specification categories. Its FP32 throughput of 78.64 TFLOPS is 4.6 times the 17.03 TFLOPS of the RTX PRO 2000 Blackwell. Memory capacity is 288 GB versus 16 GB, and memory bandwidth is 8.19 TB/s versus 288.0 GB/s. These figures indicate that if the MI355X were subjected to the same benchmark suite, its memory-bound and compute-bound results would likely reflect these advantages, but the database contains no measurements to confirm this.

The RTX PRO 2000 Blackwell has a 70th percentile ranking among all GPUs, while the MI355X sits at the 50th percentile. This percentile gap, however, derives from the MI355X having no benchmark data rather than from demonstrated inferiority. The RTX PRO 2000 Blackwell also has an active production status, while the MI355X production status is not recorded.

Architecture Differences

The two accelerators diverge at every level of their design. The AMD Instinct MI355X uses the MI350 256CU chip built on CDNA 4.0 architecture, manufactured on a 3 nm process at TSMC. It integrates 185,000 million transistors on a 2,380 mm² die, yielding a transistor density of 77.7 million per square millimeter. The NVIDIA RTX PRO 2000 Blackwell uses the GB206 chip with Blackwell 2.0 architecture, also built at TSMC but on a 5 nm node. Its 21,900 million transistors occupy a 181 mm² die, for a density of 121.0 million per square millimeter.

The MI355X contains 16,384 shading units and 1,024 texture mapping units, with no ROPs recorded. The RTX PRO 2000 Blackwell has 4,352 shading units, 136 TMUs, and 48 ROPs. The NVIDIA part also includes 34 ray tracing cores and 136 tensor cores, features that are not listed for the AMD accelerator. The pixel rate for the MI355X is recorded as 0 MPixel/s, while the RTX PRO 2000 Blackwell produces 93.94 GPixel/s. Texture rate favors the AMD part at 2,457.6 GTexel/s versus 266.2 GTexel/s for the NVIDIA part.

Memory subsystems differ fundamentally. The MI355X uses 288 GB of HBM3e across an 8,192-bit bus, delivering 8.19 TB/s of bandwidth. The RTX PRO 2000 Blackwell uses 16 GB of GDDR7 on a 128-bit bus, providing 288.0 GB/s. Clock behavior also diverges: the MI355X has a 1,000 MHz base and 2,400 MHz boost, while the RTX PRO 2000 Blackwell runs at 982 MHz base and 1,957 MHz boost. Memory clocks are 2,000 MHz (8 Gbps effective) for the AMD part and 1,125 MHz (18 Gbps effective) for the NVIDIA part.

Power and physical design separate the two further. The MI355X carries a 1,400 W TDP with a suggested PSU of 1,800 W, occupies an OAM module slot, and has no display outputs. The RTX PRO 2000 Blackwell draws 70 W with a 250 W suggested PSU, fits a dual-slot form factor, and provides four mini-DisplayPort 2.1b outputs. The MI355X connects via PCIe 5.0 x16; the RTX PRO 2000 Blackwell uses PCIe 5.0 x8. API support also differs: the AMD part lists no DirectX, OpenGL, or Vulkan support, while the NVIDIA part supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

FAQ

Q: Which GPU has higher FP32 compute throughput?

A: The AMD Instinct MI355X is recorded at 78.64 TFLOPS FP32, which is 4.6 times the 17.03 TFLOPS of the NVIDIA RTX PRO 2000 Blackwell.

Q: How much memory does each card have?

A: The AMD Instinct MI355X has 288 GB of HBM3e memory, while the NVIDIA RTX PRO 2000 Blackwell has 16 GB of GDDR7 memory.

Q: What are the power requirements for each GPU?

A: The AMD Instinct MI355X has a 1,400 W TDP and a suggested PSU of 1,800 W. The NVIDIA RTX PRO 2000 Blackwell has a 70 W TDP and a suggested PSU of 250 W.

Q: Does either GPU support DirectX or Vulkan?

A: The NVIDIA RTX PRO 2000 Blackwell supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD Instinct MI355X lists no API support for DirectX, OpenGL, or Vulkan.

Q: How does the RTX PRO 2000 Blackwell compare to its nearest rivals?

A: The RTX PRO 2000 Blackwell averages 25,269 in benchmark scores. It trails the AMD Radeon RX 6700M by 1.4%, the AMD Radeon Pro W5700 by 1.8%, and the NVIDIA GeForce RTX 3080 Ti Mobile by 1.8%, while leading the NVIDIA RTX A5000 Mobile by 2%.

Q: What is the transistor count and die size difference?

A: The AMD Instinct MI355X has 185,000 million transistors on a 2,380 mm² die, while the NVIDIA RTX PRO 2000 Blackwell has 21,900 million transistors on a 181 mm² die.

Specification Differences

| Specification | AMD Instinct MI355X | NVIDIA RTX PRO 2000 Blackwell |

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

| Chip | MI350 256CU | GB206 |

| Architecture | CDNA 4.0 | Blackwell 2.0 |

| Process node | 3 nm | 5 nm |

| Transistors | 185,000 million | 21,900 million |

| Die size | 2,380 mm² | 181 mm² |

| Transistor density | 77.7M / mm² | 121.0M / mm² |

| Base clock | 1,000 MHz | 982 MHz |

| Boost clock | 2,400 MHz | 1,957 MHz |

| Memory clock | 2,000 MHz (8 Gbps effective) | 1,125 MHz (18 Gbps effective) |

| Memory size | 288 GB | 16 GB |

| Memory type | HBM3e | GDDR7 |

| Memory bus width | 8,192 bit | 128 bit |

| Memory bandwidth | 8.19 TB/s | 288.0 GB/s |

| Shading units | 16,384 | 4,352 |

| TMUs | 1,024 | 136 |

| ROPs | 0 | 48 |

| RT cores | Not listed | 34 |

| Tensor cores | Not listed | 136 |

| Pixel rate | 0 MPixel/s | 93.94 GPixel/s |

| Texture rate | 2,457.6 GTexel/s | 266.2 GTexel/s |

| FP32 | 78.64 TFLOPS | 17.03 TFLOPS |

| FP16 | 78.64 TFLOPS (1:1) | 17.03 TFLOPS (1:1) |

| TDP | 1,400 W | 70 W |

| Slot width | OAM Module | Dual-slot |

| Suggested PSU | 1,800 W | 250 W |

| Bus interface | PCIe 5.0 x16 | PCIe 5.0 x8 |

| Display outputs | No outputs | 4x mini-DisplayPort 2.1b |

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Dimensions | 102 mm (4 inches) long, 165 mm (6.5 inches) wide | 167 mm (6.6 inches) long, 69 mm (2.7 inches) high, 20 mm (0.8 inches) wide |

| Production status | Not recorded | Active |

| Release date | 2025-06-11 | 2025-08-10 |

| Predecessor | Radeon Instinct | Workstation Ada |

| Percentile vs all GPUs | 50 | 70 |

| Average benchmark score | 0 | 25,269 |