AMD Steam Machine GPU vs NVIDIA RTX PRO 4500 Blackwell Server Comparison

The Verdict

The recorded data positions these two GPUs at opposite ends of the hardware spectrum. The AMD Steam Machine GPU is a compact, low-power console part built around the Navi 33 chip, while the NVIDIA RTX PRO 4500 Blackwell Server is a single-slot server accelerator with a substantially larger memory pool and compute throughput. The database shows the NVIDIA part holds decisive advantages in raw compute, memory capacity, and bandwidth, while the AMD part counters with a higher base clock, a lower thermal envelope, and a smaller physical footprint.

The NVIDIA RTX PRO 4500 Blackwell Server is the choice for workloads that demand maximum memory capacity, high FP32 throughput, and server-class feature support. Its 32 GB GDDR7 memory, 800.3 GB/s bandwidth, and 50.70 TFLOPS FP32 performance place it far ahead of the AMD part in any memory-bound or compute-heavy task. The AMD Steam Machine GPU, with its 110 W TDP and 156 mm length, suits compact console-style builds where power draw and physical space are the primary constraints. The data shows no benchmark overlap, so the decision rests entirely on the architectural and specification gaps: one device targets embedded console use, the other targets server acceleration.

Architecture Differences

The two processors come from different foundry processes and design philosophies. The AMD Steam Machine GPU uses the RDNA 3.0 architecture on a 6 nm TSMC node, featuring the Navi 33 chip with a die size of 204 mm². The NVIDIA RTX PRO 4500 Blackwell Server uses the Blackwell 2.0 architecture on a 5 nm TSMC process, with the GB203 chip measuring 378 mm². Transistor counts reveal the scale gap: AMD integrates 13,300 million transistors, while NVIDIA packs 45,600 million, yielding densities of 65.2M transistors per mm² versus 120.6M per mm² respectively.

The AMD part operates with a base clock of 1720 MHz, a boost clock of 2450 MHz, and a game clock of 2250 MHz. The NVIDIA part has a lower base clock of 1215 MHz but a boost clock of 2415 MHz, nearly matching the AMD boost. Memory technology differs sharply: the AMD GPU uses 8 GB of GDDR6 on a 128-bit bus, while the NVIDIA GPU uses 32 GB of GDDR7 on a 256-bit bus. This translates to bandwidth of 288.0 GB/s for AMD versus 800.3 GB/s for NVIDIA.

Compute resources also diverge. The AMD GPU carries 1792 shading units, 112 texture mapping units, 64 ROPs, and 28 ray tracing cores. The NVIDIA GPU carries 10496 shading units, 328 TMUs, 112 ROPs, 82 ray tracing cores, and 328 tensor cores. The AMD part reports no tensor cores, while NVIDIA includes them explicitly. Pixel and texture rates reflect the gap: AMD delivers 156.8 GPixel/s and 274.4 GTexel/s, while NVIDIA delivers 270.5 GPixel/s and 792.1 GTexel/s. FP32 throughput stands at 17.56 TFLOPS for AMD and 50.70 TFLOPS for NVIDIA, with both showing FP16 rates at a 1:1 ratio.

Power and physical specifications differ as well. The AMD GPU consumes 110 W with no power connectors, while the NVIDIA GPU consumes 165 W with a single 16-pin connector and a suggested power supply of 450 W. The NVIDIA part is single-slot with dimensions of 267 mm length, 111 mm height, and 40 mm width, while the AMD part measures 156 mm by 152 mm by 162 mm. The NVIDIA GPU has no display outputs, whereas the AMD GPU includes one HDMI 2.1a and one DisplayPort 2.1 output. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA part uses a PCIe 5.0 x16 interface, while the AMD part lists no bus interface. Production status is active for both, with the AMD part releasing on 2026-06-28 and the NVIDIA part on 2026-03-16. The NVIDIA predecessor is listed as Server Hopper, and its successor is Server Rubin.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA RTX PRO 4500 Blackwell Server delivers 50.70 TFLOPS FP32, which is roughly 2.9 times the 17.56 TFLOPS of the AMD Steam Machine GPU.

Q: How does memory capacity compare between the two?

A: The NVIDIA part has 32 GB of GDDR7 memory, four times the 8 GB of GDDR6 on the AMD part. The NVIDIA bus width is 256 bit versus 128 bit, and its bandwidth is 800.3 GB/s versus 288.0 GB/s.

Q: What are the power consumption figures?

A: The AMD Steam Machine GPU has a TDP of 110 W with no power connectors. The NVIDIA RTX PRO 4500 Blackwell Server has a TDP of 165 W and requires one 16-pin power connector, with a suggested power supply of 450 W.

Q: Do both GPUs support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What are the physical dimensions of each card?

A: 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, and it is single-slot.

Q: Which GPU has display outputs?

A: Only the AMD Steam Machine GPU has display outputs, offering one HDMI 2.1a and one DisplayPort 2.1. The NVIDIA RTX PRO 4500 Blackwell Server has no display outputs.

Specification Differences

The two devices differ across nearly every measurable specification. The AMD part uses the Navi 33 chip on a 6 nm process, while the NVIDIA part uses the GB203 chip on a 5 nm process. Transistor count is 13,300 million for AMD versus 45,600 million for NVIDIA, and die size is 204 mm² versus 378 mm². Transistor density is 65.2M per mm² for AMD and 120.6M per mm² for NVIDIA.

Clock speeds show AMD leading on base and game clocks: 1720 MHz base and 2250 MHz game clock versus 1215 MHz base and no game clock for NVIDIA. Boost clocks are close, at 2450 MHz for AMD and 2415 MHz for NVIDIA. Memory clocks differ, with AMD at 2250 MHz (18 Gbps effective) and NVIDIA at 1563 MHz (25 Gbps effective).

Memory size is 8 GB GDDR6 for AMD versus 32 GB GDDR7 for NVIDIA. Bus width is 128 bit versus 256 bit, and bandwidth is 288.0 GB/s versus 800.3 GB/s. Shading units number 1792 versus 10496, TMUs 112 versus 328, ROPs 64 versus 112, and ray tracing cores 28 versus 82. The NVIDIA part has 328 tensor cores; the AMD part has none listed.

Pixel rate is 156.8 GPixel/s for AMD versus 270.5 GPixel/s for NVIDIA. Texture rate is 274.4 GTexel/s versus 792.1 GTexel/s. FP32 and FP16 are both 17.56 TFLOPS for AMD and 50.70 TFLOPS for NVIDIA. TDP is 110 W versus 165 W. Power connectors are none versus one 16-pin. The NVIDIA part has a suggested PSU of 450 W, which the AMD part lacks. Bus interface is PCIe 5.0 x16 for NVIDIA and not listed for AMD. Display outputs are one HDMI 2.1a and one DisplayPort 2.1 for AMD, versus no outputs for NVIDIA. Dimensions differ in all three axes. The NVIDIA part is single-slot; the AMD slot width is not listed. Release dates differ, with NVIDIA launching earlier on 2026-03-16 and AMD on 2026-06-28. The NVIDIA part has a predecessor (Server Hopper) and successor (Server Rubin); the AMD part lists neither.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between these two GPUs. The comparison therefore relies on the recorded specification and throughput metrics. The NVIDIA RTX PRO 4500 Blackwell Server shows the largest wins in FP32 compute, memory bandwidth, and texture throughput. Its 50.70 TFLOPS FP32 is 33.14 TFLOPS higher than the AMD part's 17.56 TFLOPS, a difference of roughly 189%. Memory bandwidth of 800.3 GB/s exceeds the AMD figure of 288.0 GB/s by 512.3 GB/s, a 178% advantage. Texture rate of 792.1 GTexel/s versus 274.4 GTexel/s gives NVIDIA a 517.7 GTexel/s lead.

The AMD Steam Machine GPU wins on base clock, game clock, and power efficiency. Its base clock of 1720 MHz is 505 MHz higher than the NVIDIA base clock of 1215 MHz. The game clock of 2250 MHz has no direct equivalent on the NVIDIA part, which lists no game clock. The AMD TDP of 110 W is 55 W lower than the NVIDIA TDP of 165 W. The AMD part also holds a small boost clock edge of 35 MHz, at 2450 MHz versus 2415 MHz.

The pixel rate comparison favors NVIDIA at 270.5 GPixel/s versus 156.8 GPixel/s. The ROP count difference is 112 versus 64, and the ray tracing core count is 82 versus 28. The shading unit count difference is substantial: 10496 versus 1792. The transistor density difference is also notable, with NVIDIA at 120.6M per mm² versus AMD at 65.2M per mm².

Where Each One Wins

The NVIDIA RTX PRO 4500 Blackwell Server is the stronger part for server-side compute tasks. Its 32 GB GDDR7 memory and 800.3 GB/s bandwidth support large datasets, and its 50.70 TFLOPS FP32 throughput handles heavy parallel workloads. The 328 tensor cores provide dedicated matrix math capability that the AMD part lacks entirely. The 82 ray tracing cores and 10496 shading units give it a clear edge in any rendering or simulation task that uses those resources. The single-slot form factor and PCIe 5.0 x16 interface align with server deployment needs, though it has no display outputs, so it is not designed for direct video output.

The AMD Steam Machine GPU wins in scenarios constrained by power and space. Its 110 W TDP is 55 W lower than the NVIDIA part, and its 156 mm length is 111 mm shorter. The 1720 MHz base clock and 2250 MHz game clock indicate a design tuned for sustained gaming-style workloads at lower power. The presence of one HDMI 2.1a and one DisplayPort 2.1 output makes it suitable for direct display connection, which the NVIDIA part cannot do. The 8 GB GDDR6 memory is sufficient for console-class resolutions, and the 288.0 GB/s bandwidth, while far lower than the NVIDIA part, matches the narrower 128-bit bus.

The data shows no overlap in intended use cases. The NVIDIA part prioritizes memory capacity, compute throughput, and server integration. The AMD part prioritizes low power draw, compact dimensions, and display connectivity. The boost clocks are nearly identical, but every other metric pushes the two devices toward separate deployment scenarios. The AMD part fits a console chassis with its 110 W envelope and no external power connectors. The NVIDIA part fits a server rack with its single-slot width, 16-pin connector, and 450 W suggested power supply. Without benchmark scores in the database, these architectural and specification gaps define the comparison.