AMD Steam Machine GPU vs NVIDIA H800 SXM5 Comparison

The AMD Steam Machine GPU and the NVIDIA H800 SXM5 occupy entirely different segments of the hardware market, yet comparing them directly reveals how far apart their design goals are. The AMD part is a compact, low-power console GPU built for a specific Valve product, while the NVIDIA H800 SXM5 is a massive server accelerator aimed at high-throughput compute environments. The recorded data shows no shared benchmarks, no wins for either side, and identical percentile rankings, so the analysis must focus on architectural intent, memory strategy, and raw compute output.

Where Each One Wins

The AMD Steam Machine GPU wins in any scenario that prioritizes low power draw and physical compactness. Its thermal design power is 110 W, which is a fraction of the H800's 700 W. The AMD unit has no power connectors listed, meaning it draws power through its slot or board integration, and it measures 156 mm in length, 152 mm in height, and 162 mm in width. That makes it suitable for small-form-factor console enclosures. Its display outputs include 1x HDMI 2.1a and 1x DisplayPort 2.1, so it can drive consumer displays directly. The H800 SXM5 has no display outputs at all, confirming that it is not intended for graphics output.

The NVIDIA H800 SXM5 wins in raw compute throughput and memory capacity. Its FP32 output is 59.30 TFLOPS, which is more than three times the AMD part's 17.56 TFLOPS. Its FP16 output reaches 237.2 TFLOPS at a 4:1 ratio, while the AMD GPU delivers 17.56 TFLOPS at a 1:1 ratio. The H800 also carries 80 GB of HBM3 memory with a 5120-bit bus and 3.36 TB/s of bandwidth. The AMD card offers 8 GB of GDDR6 on a 128-bit bus with 288.0 GB/s. The H800's memory bandwidth is over ten times higher, which matters for large data sets and server workloads.

The H800 also wins on texture throughput, posting 926.6 GTexel/s versus the AMD part's 274.4 GTexel/s. The AMD GPU wins on pixel rate, however, with 156.8 GPixel/s compared to the H800's 42.12 GPixel/s. That inversion reflects their different roles: the console GPU is built to render frames to a screen, while the server chip moves data through compute pipelines.

Architecture Differences

The two devices share a foundry, TSMC, but use different process nodes and chips. The AMD Steam Machine GPU uses the Navi 33 chip on a 6 nm process, while the NVIDIA H800 SXM5 uses the GH100 chip on a 5 nm process. The AMD architecture is RDNA 3.0 with the codename Hotpink Bonefish, and it belongs to the Console GPU (Valve) generation. The NVIDIA architecture is Hopper, with no codename listed, and it belongs to the Server Hopper (Hxx) generation.

Transistor counts differ enormously. The AMD chip contains 13,300 million transistors on a 204 mm² die, giving a transistor density of 65.2M per mm². The NVIDIA chip contains 80,000 million transistors on an 814 mm² die, with a density of 98.3M per mm². The H800 packs over six times as many transistors into a die that is four times larger, and its density is roughly 50% higher.

The shading units also diverge sharply. The AMD GPU has 1,792 shading units, 112 texture mapping units, and 64 render output units. It lists 28 ray tracing cores and no tensor cores. The NVIDIA H800 has 16,896 shading units, 528 TMUs, and only 24 ROPs. It lists 528 tensor cores and no ray tracing cores. That configuration confirms the H800 is compute-oriented: tensor cores dominate, while ROPs are minimal because the chip does not need to output pixels.

Clock speeds follow the power envelope. The AMD GPU runs at a base of 1720 MHz, a game clock of 2250 MHz, and a boost of 2450 MHz. The H800 runs at a base of 1095 MHz and a boost of 1755 MHz. The AMD part clocks much higher, but the H800 compensates with far more compute units. Memory clocks also differ: the AMD memory runs at 2250 MHz with 18 Gbps effective, while the H800 memory runs at 1313 MHz with 5.3 Gbps effective. The H800's advantage comes from its 5120-bit bus, not its clock speed.

API support is another major split. The AMD GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA H800 lists no DirectX, OpenGL, or Vulkan support in the database. That means the H800 is not designed for gaming or traditional graphics rendering through those APIs. The AMD part is a full consumer graphics solution, while the H800 is a compute accelerator.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results between these two devices, and neither unit has any individual benchmarks recorded. Both sit at the 50th percentile against all GPUs, and both have an average benchmark score of zero. With zero wins for either side, the comparison rests entirely on specifications.

The largest single advantage for the NVIDIA H800 is memory bandwidth. The H800 delivers 3.36 TB/s, while the AMD Steam Machine GPU delivers 288.0 GB/s. That is a difference of roughly 11.7 times in favor of NVIDIA. For workloads that stream large matrices or massive data sets, that bandwidth gap is decisive.

The next major gap is FP16 throughput. The H800 reaches 237.2 TFLOPS, while the AMD part reaches 17.56 TFLOPS. That is a 13.5 times difference. The H800 achieves this through its 4:1 FP16 ratio, which is typical of tensor-core-heavy server chips. The AMD GPU's FP16 runs at 1:1 with FP32, so it offers no special advantage for half-precision workloads.

FP32 also favors the H800, with 59.30 TFLOPS versus 17.56 TFLOPS, a 3.4 times difference. Texture rate favors the H800 as well, with 926.6 GTexel/s versus 274.4 GTexel/s, a 3.4 times difference. The H800 also has 528 tensor cores, while the AMD part has none listed, and the H800 has 16,896 shading units versus 1,792 for AMD, a 9.4 times difference.

The AMD Steam Machine GPU wins on pixel rate, with 156.8 GPixel/s versus 42.12 GPixel/s, a 3.7 times advantage. That makes sense for a console GPU driving a display. The AMD part also wins on clock speed, with a 2450 MHz boost versus 1755 MHz for the H800, and its base clock of 1720 MHz is substantially higher than the H800's 1095 MHz.

FAQ

Q: Which GPU has more memory?

A: The NVIDIA H800 SXM5 has 80 GB of HBM3 memory, while the AMD Steam Machine GPU has 8 GB of GDDR6 memory. The H800 also has a 5120-bit memory bus versus 128-bit for the AMD part.

Q: Does the AMD Steam Machine GPU support ray tracing?

A: Yes, the AMD GPU lists 28 ray tracing cores. The NVIDIA H800 SXM5 does not list any ray tracing cores in the database.

Q: Can the NVIDIA H800 SXM5 output video to a display?

A: No. The H800 lists no display outputs, while the AMD Steam Machine GPU includes 1x HDMI 2.1a and 1x DisplayPort 2.1.

Q: Which GPU has higher FP32 compute?

A: The NVIDIA H800 SXM5 has 59.30 TFLOPS of FP32, compared to 17.56 TFLOPS for the AMD Steam Machine GPU.

Q: What process nodes do these chips use?

A: The AMD Steam Machine GPU uses a 6 nm process, and the NVIDIA H800 SXM5 uses a 5 nm process. Both are manufactured by TSMC.

Q: What is the power requirement difference?

A: The AMD Steam Machine GPU has a TDP of 110 W and lists no power connectors. The NVIDIA H800 SXM5 has a TDP of 700 W, uses an 8-pin EPS connector, and lists a suggested PSU of 1100 W.

The Verdict

The data indicates that these two GPUs should not be considered direct competitors. The AMD Steam Machine GPU is built for a console form factor, with high clocks, a 110 W power draw, and display outputs. Its 8 GB of memory and 288.0 GB/s bandwidth are appropriate for its intended use. The NVIDIA H800 SXM5 is a server module with 80 GB of HBM3, 3.36 TB/s bandwidth, and 528 tensor cores, designed for large-scale compute tasks.

The user who should pick the AMD Steam Machine GPU is someone running a console-style system that needs a compact, low-power graphics solution with modern display output and API support. The user who should pick the NVIDIA H800 SXM5 is someone running server workloads that demand massive memory bandwidth, high FP16 throughput, and tensor core acceleration. The H800's lack of display outputs and graphics APIs makes it unsuitable for desktop use. The AMD part's low memory capacity and bandwidth make it unsuitable for the H800's intended compute workloads.

The H800's FP16 output is 237.2 TFLOPS, which is 13.5 times the AMD part's 17.56 TFLOPS. That alone defines the server GPU's role. The AMD part's pixel rate of 156.8 GPixel/s versus 42.12 GPixel/s for the H800 defines the console GPU's role. Neither device can substitute for the other in its native environment, and the identical 50th percentile ranking in the database reflects that they are simply not measured against the same pool of use cases.

Specification Differences

The two devices differ in every major specification field. The AMD Steam Machine GPU uses the Navi 33 chip on a 6 nm process, while the NVIDIA H800 SXM5 uses the GH100 chip on a 5 nm process. Transistor count is 13,300 million for AMD versus 80,000 million for NVIDIA. Die size is 204 mm² for AMD versus 814 mm² for NVIDIA. Transistor density is 65.2M per mm² for AMD versus 98.3M per mm² for NVIDIA.

Clock speeds differ: AMD base is 1720 MHz versus 1095 MHz for NVIDIA. AMD boost is 2450 MHz versus 1755 MHz for NVIDIA. AMD lists a game clock of 2250 MHz, while NVIDIA has no game clock. Memory clock is 2250 MHz at 18 Gbps effective for AMD versus 1313 MHz at 5.3 Gbps effective for NVIDIA.

Memory configuration differs: AMD has 8 GB of GDDR6 on a 128-bit bus with 288.0 GB/s bandwidth. NVIDIA has 80 GB of HBM3 on a 5120-bit bus with 3.36 TB/s bandwidth. Compute units differ: AMD has 1,792 shading units, 112 TMUs, and 64 ROPs. NVIDIA has 16,896 shading units, 528 TMUs, and 24 ROPs. AMD lists 28 ray tracing cores and no tensor cores. NVIDIA lists 528 tensor cores and no ray tracing cores.

Pixel rate is 156.8 GPixel/s for AMD versus 42.12 GPixel/s for NVIDIA. Texture rate is 274.4 GTexel/s for AMD versus 926.6 GTexel/s for NVIDIA. FP32 is 17.56 TFLOPS for AMD versus 59.30 TFLOPS for NVIDIA. FP16 is 17.56 TFLOPS at 1:1 for AMD versus 237.2 TFLOPS at 4:1 for NVIDIA.

Power and form factor differ: AMD has a 110 W TDP and no power connectors. NVIDIA has a 700 W TDP, an 8-pin EPS connector, and a suggested PSU of 1100 W. AMD is an SXM module? No, the AMD unit has dimensions of 156 mm by 152 mm by 162 mm, while NVIDIA is listed as an SXM Module with no dimensions. AMD has display outputs of 1x HDMI 2.1a and 1x DisplayPort 2.1. NVIDIA has no outputs. AMD supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. NVIDIA lists no API support. AMD uses a PCIe interface? The database lists no bus interface for AMD, while NVIDIA uses PCIe 5.0 x16. Release dates differ: AMD is 2026-06-28, NVIDIA is 2023-03-20. AMD has no predecessor or successor listed. NVIDIA lists Server Ada as predecessor and Server Blackwell as successor.