AMD Steam Machine GPU vs NVIDIA RTX PRO 4500 Blackwell Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the AMD Steam Machine GPU and the NVIDIA RTX PRO 4500 Blackwell. The AMD Steam Machine GPU has no benchmark scores in the database, zero wins, and no nearest rivals. The NVIDIA RTX PRO 4500 Blackwell, by contrast, has a substantial set of measurements. Its average benchmark score is 31,532, placing it at the 76th percentile of all GPUs in the database. The AMD part sits at the 50th percentile with an average score of zero, meaning no recorded performance data exists for it.

The NVIDIA RTX PRO 4500 Blackwell delivers strong results across multiple test suites. In 3DMark Steel Nomad DX12, it records a score of 7,025. Its Geekbench Vulkan score reaches 221,768. Passmark results show 33,360 in G3D, 19,255 in GPU compute, 1,336 in G2D, 397 in DirectX 9, 320 in DirectX 11, 204 in DirectX 10, and 119 in DirectX 12. These figures indicate a capable professional workstation part with balanced performance across legacy and modern APIs.

The nearest rivals for the NVIDIA RTX PRO 4500 Blackwell provide context. The NVIDIA TITAN RTX averages 31,676, which is 0.5% higher, so the RTX PRO 4500 trails by a narrow margin. The Intel Arc Pro A30M averages 31,894, putting it 1.1% ahead. The NVIDIA GRID M60-1Q averages 31,220, which is 1% behind the RTX PRO 4500. The NVIDIA Quadro M5000 averages 31,206, also 1% behind. These deltas are small, indicating that the RTX PRO 4500 sits in a tightly contested performance band among professional and high-end workstation GPUs.

Because the AMD Steam Machine GPU lacks any benchmark entries, no quantitative comparison of wins is possible. The data simply records zero performance results for that part.

Architecture Differences

The two GPUs come from different manufacturers and use different architectures. The AMD Steam Machine GPU uses the Navi 33 chip built on RDNA 3.0 architecture, with the codename Hotpink Bonefish. It belongs to the Console GPU (Valve) generation. The NVIDIA RTX PRO 4500 Blackwell uses the GB203 chip built on Blackwell 2.0 architecture and belongs to the Blackwell PRO W (x000) generation.

Manufacturing processes differ. The AMD chip uses a 6 nm process from TSMC, while the NVIDIA chip uses a 5 nm process, also from TSMC. Transistor counts differ substantially. The AMD GPU contains 13,300 million transistors on a 204 mm² die, yielding a transistor density of 65.2 million per mm². The NVIDIA GPU contains 45,600 million transistors on a 378 mm² die, yielding a density of 120.6 million per mm². The NVIDIA chip has more than three times the transistor count and nearly double the density.

Memory configurations are very different. The AMD Steam Machine GPU has 8 GB of GDDR6 memory on a 128-bit bus, delivering 288.0 GB/s of bandwidth. The NVIDIA RTX PRO 4500 Blackwell has 32 GB of GDDR7 memory on a 256-bit bus, delivering 896.0 GB/s. That is four times the memory capacity and more than three times the bandwidth.

Compute resources differ sharply. The AMD GPU has 1,792 shading units, 112 texture mapping units, 64 raster operation pipelines, and 28 ray tracing cores. It has no tensor cores. The NVIDIA GPU has 10,496 shading units, 328 texture mapping units, 112 raster operation pipelines, 82 ray tracing cores, and 328 tensor cores. The NVIDIA part has roughly 5.9 times the shading units, 2.9 times the TMUs, 1.75 times the ROPs, and 2.9 times the RT cores.

Clock speeds are similar at the top end. The AMD GPU has a base clock of 1720 MHz, a boost clock of 2450 MHz, and a game clock of 2250 MHz. The NVIDIA GPU has a base clock of 1635 MHz and a boost clock of 2407 MHz. The AMD part has a higher base clock by 85 MHz and a higher boost clock by 43 MHz, but the NVIDIA part compensates with far more execution units.

Pixel and texture throughput reflect the resource differences. The AMD GPU achieves 156.8 GPixel/s and 274.4 GTexel/s. The NVIDIA GPU achieves 269.6 GPixel/s and 789.5 GTexel/s. Floating point performance shows a large gap. The AMD GPU delivers 17.56 TFLOPS FP32 and FP16 at a 1:1 ratio. The NVIDIA GPU delivers 50.53 TFLOPS FP32 and FP16 at a 1:1 ratio, approximately 2.9 times higher.

Power and physical specifications differ as well. The AMD GPU has a TDP of 110 W and requires no power connectors. The NVIDIA GPU has a TDP of 200 W and uses a single 16-pin connector, with a suggested PSU of 550 W. The NVIDIA part is dual-slot, while the AMD part has no recorded slot width. The AMD GPU measures 156 mm in length, 152 mm in height, and 162 mm in width. The NVIDIA GPU measures 267 mm in length, 111 mm in height, and 40 mm in width. The NVIDIA board is longer but thinner in height and width.

Bus interface also differs. The AMD GPU has no recorded bus interface, while the NVIDIA GPU uses PCIe 5.0 x16. Display outputs differ: the AMD GPU provides one HDMI 2.1a and one DisplayPort 2.1, while the NVIDIA GPU provides four DisplayPort 2.1b outputs.

API support is identical on paper: both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The Verdict

The data indicates that the NVIDIA RTX PRO 4500 Blackwell is the only one of the two parts with recorded performance measurements. It ranks at the 76th percentile of all GPUs in the database and maintains an average benchmark score of 31,532. Its nearest rivals are all within roughly 1% of its average score, so it sits in a competitive band. The AMD Steam Machine GPU has no benchmark records, no nearest rivals, and a 50th percentile placement that reflects only its zero score.

Architecturally, the NVIDIA part dominates in nearly every measurable specification. It has more transistors, a denser chip, more memory, higher bandwidth, more shading units, more texture units, more raster pipelines, more ray tracing cores, and dedicated tensor cores. Its FP32 throughput is roughly 2.9 times that of the AMD part. Its pixel rate is about 1.7 times higher, and its texture rate is about 2.9 times higher.

The AMD Steam Machine GPU is a lower-power part at 110 W versus 200 W, and it is physically smaller in length. It also has a higher base clock. But those advantages do not translate into recorded performance data in the database.

The recorded data supports choosing the NVIDIA RTX PRO 4500 Blackwell for any workload where measured performance matters, given that the AMD part has no benchmark results at all. The NVIDIA part also offers 32 GB of memory and 896.0 GB/s of bandwidth, which are strong assets for memory-intensive tasks. The AMD part offers 8 GB and 288.0 GB/s, which are lower in both capacity and throughput.

There is no launch MSRP recorded for either product, so no pricing comparison is available from the data.

FAQ

Q: Which GPU has a higher average benchmark score in the database?

A: The NVIDIA RTX PRO 4500 Blackwell has an average benchmark score of 31,532. The AMD Steam Machine GPU has an average benchmark score of zero with no recorded benchmarks.

Q: How does the NVIDIA RTX PRO 4500 Blackwell compare to its closest rivals?

A: It trails the NVIDIA TITAN RTX by 0.5% and the Intel Arc Pro A30M by 1.1%. It leads the NVIDIA GRID M60-1Q by 1% and the NVIDIA Quadro M5000 by 1%.

Q: What are the memory capacities of the two GPUs?

A: The AMD Steam Machine GPU has 8 GB of GDDR6 memory on a 128-bit bus with 288.0 GB/s bandwidth. The NVIDIA RTX PRO 4500 Blackwell has 32 GB of GDDR7 memory on a 256-bit bus with 896.0 GB/s bandwidth.

Q: What is the FP32 performance of each GPU?

A: The AMD Steam Machine GPU delivers 17.56 TFLOPS FP32. The NVIDIA RTX PRO 4500 Blackwell delivers 50.53 TFLOPS FP32, which is approximately 2.9 times higher.

Q: Which GPU has tensor cores?

A: Only the NVIDIA RTX PRO 4500 Blackwell has tensor cores, with 328 of them. The AMD Steam Machine GPU has no tensor cores recorded.

Q: What power connectors does each GPU require?

A: The AMD Steam Machine GPU requires no power connectors and has a TDP of 110 W. The NVIDIA RTX PRO 4500 Blackwell uses one 16-pin connector, has a TDP of 200 W, and a suggested PSU of 550 W.

Where Each One Wins

The NVIDIA RTX PRO 4500 Blackwell wins on every recorded benchmark metric, simply because it is the only part with benchmark data. Its 3DMark Steel Nomad DX12 score of 7,025 and Geekbench Vulkan score of 221,768 show strong modern API performance. Passmark results across DirectX 9 through 12, plus G2D and G3D tests, give it a broad profile. Its GPU compute score of 19,255 indicates solid compute throughput.

The AMD Steam Machine GPU has no recorded wins. With zero benchmarks and an average score of zero, the data does not support any performance advantage. Its higher base clock of 1720 MHz versus 1635 MHz and higher boost clock of 2450 MHz versus 2407 MHz are the only recorded clock advantages. Its lower TDP of 110 W versus 200 W and its lack of power connectors make it a lower-power part in the specifications. Its smaller physical footprint, 156 mm length versus 267 mm, also distinguishes it physically.

In terms of use cases, the NVIDIA RTX PRO 4500 Blackwell is suited to workloads that demand high memory capacity, 32 GB, and high bandwidth, 896.0 GB/s. Its 328 tensor cores and 82 ray tracing cores support compute and graphics workloads that leverage those features. Its four DisplayPort 2.1b outputs support multi-display configurations. The AMD Steam Machine GPU, with 8 GB of memory, 28 ray tracing cores, and no tensor cores, is more limited in those areas, though its lower power draw and compact dimensions may fit constrained environments.

Specification Differences

The following specifications differ between the two GPUs:

• Chip: Navi 33 versus GB203
• Architecture: RDNA 3.0 versus Blackwell 2.0
• Generation: Console GPU (Valve) versus Blackwell PRO W (x000)
• Process node: 6 nm versus 5 nm
• Transistors: 13,300 million versus 45,600 million
• Die size: 204 mm² versus 378 mm²
• Transistor density: 65.2M / mm² versus 120.6M / mm²
• Base clock: 1720 MHz versus 1635 MHz
• Boost clock: 2450 MHz versus 2407 MHz
• Game clock: 2250 MHz versus not recorded
• Memory clock: 2250 MHz 18 Gbps effective versus 1750 MHz 28 Gbps effective
• Memory size: 8 GB versus 32 GB
• Memory type: GDDR6 versus GDDR7
• Memory bus width: 128 bit versus 256 bit
• Memory bandwidth: 288.0 GB/s versus 896.0 GB/s
• Shading units: 1,792 versus 10,496
• Texture mapping units: 112 versus 328
• Raster operation pipelines: 64 versus 112
• Ray tracing cores: 28 versus 82
• Tensor cores: none versus 328
• Pixel rate: 156.8 GPixel/s versus 269.6 GPixel/s
• Texture rate: 274.4 GTexel/s versus 789.5 GTexel/s
• FP32: 17.56 TFLOPS versus 50.53 TFLOPS
• TDP: 110 W versus 200 W
• Slot width: not recorded versus dual-slot
• Power connectors: none versus 1x 16-pin
• Suggested PSU: not recorded versus 550 W
• Bus interface: not recorded versus PCIe 5.0 x16
• Display outputs: 1x HDMI 2.1a and 1x DisplayPort 2.1 versus 4x DisplayPort 2.1b
• Length: 156 mm versus 267 mm
• Height: 152 mm versus 111 mm
• Width: 162 mm versus 40 mm
• Release date: 2026-06-28 versus 2025-03-17
• Predecessor: none recorded versus Workstation Ada
• Benchmark score: zero with no entries versus 31,532 average
• Percentile: 50 versus 76