AMD Instinct MI350X vs NVIDIA RTX PRO 6000 Blackwell Comparison

The AMD Instinct MI350X and NVIDIA RTX PRO 6000 Blackwell target different corners of the accelerator market. The MI350X is a compute-oriented OAM module built for dense AI and HPC workloads, while the RTX PRO 6000 Blackwell is a dual-slot workstation card with display outputs and full graphics API support. The recorded data shows no head-to-head benchmark overlap between the two, so the comparison relies on architectural characteristics, memory specifications, and the single benchmark entry for the NVIDIA card.

Head-to-Head Benchmarks

The database contains no shared benchmark results for the AMD Instinct MI350X and NVIDIA RTX PRO 6000 Blackwell. The MI350X has no recorded benchmark scores, an average benchmark score of zero, and a percentile rank of 50 among all GPUs. The RTX PRO 6000 Blackwell has one recorded result: 16,408 points in the 3DMark Steel Nomad DX12 test. That score places it at the 59th percentile of all GPUs in the database.

The nearest rivals for the RTX PRO 6000 Blackwell in that test provide context. The AMD Radeon PRO W7500 scores 16,415, which is effectively identical, with a delta of 0 percent. The AMD Radeon RX 5700 XT scores 16,361, trailing by 0.3 percent. The AMD Radeon Pro 5600M scores 16,351, trailing by 0.4 percent. The NVIDIA GeForce RTX 5090 D V2 scores 16,504, leading the RTX PRO 6000 Blackwell by 0.6 percent. The delta values are all within a single percentage point, indicating that the RTX PRO 6000 Blackwell delivers performance in line with a cluster of mid-range to upper-mid-range cards in this specific workload.

Because the MI350X has no comparable benchmark entries, a direct performance comparison in shared tests is not possible from the recorded data. The FP32 and FP16 throughput figures do offer a compute-side comparison. The MI350X delivers 72.09 TFLOPS in both FP32 and FP16, with a 1:1 ratio. The RTX PRO 6000 Blackwell delivers 126.0 TFLOPS in both FP32 and FP16, also with a 1:1 ratio. The NVIDIA card provides roughly 75 percent higher raw FP32 throughput than the AMD card based on these figures.

Architecture Differences

The MI350X uses the CDNA 4.0 architecture on a 3 nm process from TSMC. The chip is labeled MI350 256CU. The RTX PRO 6000 Blackwell uses the Blackwell 2.0 architecture on a 5 nm process, also from TSMC, with the GB202 chip. The process node difference gives AMD a manufacturing advantage in density, but the NVIDIA chip achieves a higher transistor density per square millimeter.

The MI350X integrates 185,000 million transistors across a die size of 2380 mm², resulting in a transistor density of 77.7 million transistors per mm². The RTX PRO 6000 Blackwell integrates 92,200 million transistors across a die size of 750 mm², resulting in a transistor density of 122.9 million transistors per mm². The AMD die is more than three times larger in area, while the NVIDIA die packs transistors more tightly.

The MI350X is built for compute without graphics output. It has no display outputs, no DirectX support, no OpenGL support, and no Vulkan support. The RTX PRO 6000 Blackwell supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, with four DisplayPort 2.1b outputs. This makes the NVIDIA card a workstation graphics solution, while the AMD card is an accelerator that relies on a host system for all display and API functionality.

The compute architecture differs in shading resources. The MI350X contains 16,384 shading units and 1,024 texture mapping units, with zero ROPs. The RTX PRO 6000 Blackwell contains 24,064 shading units, 752 texture mapping units, and 192 ROPs. The NVIDIA card also includes 188 ray tracing cores and 752 tensor cores. The MI350X has no listed ray tracing or tensor core counts.

Texture and pixel rates reflect these differences. The MI350X achieves a texture rate of 2,252.8 GTexel/s and a pixel rate of 0 MPixel/s. The RTX PRO 6000 Blackwell achieves a texture rate of 1,968.0 GTexel/s and a pixel rate of 502.5 GPixel/s. The AMD card wins in texture fill, while the NVIDIA card is the only one capable of rasterizing pixels.

FAQ

Q: Which card has more memory?

A: The AMD Instinct MI350X has 288 GB of HBM3e memory, while the NVIDIA RTX PRO 6000 Blackwell has 96 GB of GDDR7 memory.

Q: How do the memory bandwidth figures compare?

A: The MI350X delivers a memory bandwidth of 8.19 TB/s across an 8192-bit bus. The RTX PRO 6000 Blackwell delivers 1.79 TB/s across a 512-bit bus.

Q: Does the NVIDIA card support display outputs?

A: Yes, the RTX PRO 6000 Blackwell has four DisplayPort 2.1b outputs and supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The MI350X has no display outputs and no graphics API support.

Q: What is the power draw of each card?

A: The MI350X has a TDP of 1000 W with a suggested PSU of 1400 W. The RTX PRO 6000 Blackwell has a TDP of 600 W with a suggested PSU of 1000 W.

Q: Which card has the higher boost clock?

A: The RTX PRO 6000 Blackwell has a boost clock of 2617 MHz, compared to 2200 MHz for the MI350X.

Q: Are there any benchmark results for the MI350X?

A: The database records no benchmark scores for the MI350X, with an average benchmark score of zero. The RTX PRO 6000 Blackwell has one recorded score of 16,408 in 3DMark Steel Nomad DX12.

Specification Differences

The two cards differ across nearly every specification field. The MI350X uses a 3 nm process, the RTX PRO 6000 Blackwell uses 5 nm. Transistor counts differ substantially: 185,000 million for AMD versus 92,200 million for NVIDIA. Die size is 2380 mm² for the MI350X versus 750 mm² for the RTX PRO 6000 Blackwell.

Memory configuration is a major split. The MI350X offers 288 GB of HBM3e with an 8192-bit bus and 8.19 TB/s bandwidth. The RTX PRO 6000 Blackwell offers 96 GB of GDDR7 with a 512-bit bus and 1.79 TB/s bandwidth. Memory clocks are 2000 MHz (8 Gbps effective) for AMD and 1750 MHz (28 Gbps effective) for NVIDIA.

Shading unit counts favor NVIDIA: 24,064 versus 16,384. Texture mapping units favor AMD: 1,024 versus 752. ROPs exist only on NVIDIA at 192. Ray tracing cores exist only on NVIDIA at 188. Tensor cores exist only on NVIDIA at 752.

Clock speeds differ. The MI350X has a base clock of 1000 MHz and boost of 2200 MHz. The RTX PRO 6000 Blackwell has a base clock of 1590 MHz and boost of 2617 MHz. Pixel rate is 0 MPixel/s for AMD and 502.5 GPixel/s for NVIDIA. Texture rate is 2,252.8 GTexel/s for AMD and 1,968.0 GTexel/s for NVIDIA.

FP32 and FP16 throughput are both 72.09 TFLOPS for AMD and 126.0 TFLOPS for NVIDIA. Power draw is 1000 W for AMD and 600 W for NVIDIA. The MI350X is an OAM module with no power connectors, while the RTX PRO 6000 Blackwell is dual-slot with a single 16-pin connector. Suggested PSU is 1400 W for AMD and 1000 W for NVIDIA.

Form factor and dimensions also differ. The MI350X measures 102 mm in length and 165 mm in width. The RTX PRO 6000 Blackwell measures 304 mm in length, 137 mm in height, and 40 mm in width. Both use a PCIe 5.0 x16 bus interface.

The RTX PRO 6000 Blackwell has a launch MSRP of 8,565 USD. The MI350X has no launch MSRP recorded.

Where Each One Wins

The AMD Instinct MI350X wins in memory capacity, memory bandwidth, and memory bus width. Its 288 GB HBM3e configuration with 8.19 TB/s bandwidth is designed for large model residency and high-throughput data movement. The texture rate of 2,252.8 GTexel/s also exceeds the NVIDIA card.

The MI350X wins in transistor count and die size. With 185,000 million transistors on a 2380 mm² die, it is a massive compute device. The 3 nm process node is smaller than the 5 nm node used by NVIDIA.

The NVIDIA RTX PRO 6000 Blackwell wins in raw FP32 and FP16 compute, delivering 126.0 TFLOPS compared to 72.09 TFLOPS. It also wins in shading units, boost clock, and base clock. The presence of 192 ROPs, 188 ray tracing cores, and 752 tensor cores gives it capabilities the MI350X does not list.

The NVIDIA card wins in graphics and display functionality. It supports DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4, and four DisplayPort 2.1b outputs. The MI350X has none of these.

The NVIDIA card wins in power efficiency based on TDP. It draws 600 W versus 1000 W for the MI350X, and requires a 1000 W PSU versus 1400 W. The NVIDIA card also wins in pixel rate at 502.5 GPixel/s, while the AMD card has zero pixel throughput.

The Verdict

The data defines two distinct products. The AMD Instinct MI350X is a high-capacity, high-bandwidth compute accelerator with no graphics path. Its 288 GB memory pool, 8.19 TB/s bandwidth, and 8192-bit bus position it for workloads that need to hold and stream very large datasets. The 1000 W TDP and OAM form factor confirm a data-center orientation.

The NVIDIA RTX PRO 6000 Blackwell is a workstation card with graphics output, API support, and a conventional dual-slot design. Its 96 GB GDDR7 memory and 1.79 TB/s bandwidth are lower, but its 126.0 TFLOPS FP32 throughput, 24,064 shading units, and 188 ray tracing cores provide higher compute density in a smaller 750 mm² die. The 600 W TDP and 1000 W suggested PSU make it more manageable for workstation integration.

Benchmark data does not place these cards in direct competition. The RTX PRO 6000 Blackwell has a recorded 3DMark Steel Nomad DX12 score of 16,408, placing it at the 59th percentile, with nearest rivals within a 0.6 percent range. The MI350X has no recorded scores. The choice between them depends on whether the workload requires the MI350X's memory capacity and bandwidth or the RTX PRO 6000 Blackwell's graphics capabilities and higher FP32 throughput. The data supports the RTX PRO 6000 Blackwell for graphics-enabled workstation tasks and the MI350X for memory-bound compute installations.