AMD Steam Machine GPU vs NVIDIA B200 SXM6 Comparison

AMD Steam Machine GPU and NVIDIA B200 SXM6 occupy opposite ends of the GPU spectrum, and the recorded data reflects that divide clearly. The AMD part is a compact, low-power console graphics solution built on RDNA 3.0, while the NVIDIA B200 SXM6 is a massive server accelerator aimed at data center workloads. Benchmark results, as captured in the database, show no direct head-to-head wins for either part due to the absence of comparative benchmark entries, but the specification sheets alone establish distinct use cases.

Where Each One Wins

The AMD Steam Machine GPU wins in scenarios requiring a self-contained, low-power graphics solution. Its 110 W TDP and lack of power connectors mean it can operate in a console chassis without external power cabling. The 8 GB GDDR6 memory on a 128 bit bus delivers 288.0 GB/s of bandwidth, which is adequate for 1080p and 1440p gaming titles. The 17.56 TFLOPS FP32 throughput, combined with 28 ray tracing cores and support for DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, positions it as a capable gaming GPU. The 156 mm length, 152 mm height, and 162 mm width dimensions fit within typical console enclosures, and the display outputs include 1x HDMI 2.1a and 1x DisplayPort 2.1, enabling direct connection to consumer displays.

The NVIDIA B200 SXM6 wins decisively in compute-heavy, high-throughput environments. Its 180 GB HBM3e memory on an 8192 bit bus provides 8.19 TB/s of memory bandwidth, a figure that dwarfs the AMD part by an order of magnitude. The 69.34 TFLOPS FP32 performance is nearly 4 times higher than the AMD GPU, and the 592 tensor cores deliver specialized acceleration for AI and machine learning workloads. The 208,000 million transistors on a 1628 mm² die represent a massive investment in parallel compute capacity. The B200 SXM6 uses a PCIe 6.0 x16 interface and requires a suggested PSU of 1400 W, reflecting its server-grade power demands. It has no display outputs, confirming its role as a compute accelerator rather than a graphics card.

Architecture Differences

The architectural split between the two is fundamental. AMD uses the Navi 33 chip built on RDNA 3.0, codenamed Hotpink Bonefish, manufactured on a 6 nm TSMC process. The die size is 204 mm² with 13,300 million transistors, yielding a transistor density of 65.2M per mm². The GPU belongs to the Console GPU (Valve) generation, indicating its design targets integrated gaming hardware. The 1792 shading units, 112 texture mapping units, and 64 raster operation units form a balanced rasterization pipeline. Clock speeds range from a base of 1720 MHz to a boost of 2450 MHz, with a game clock of 2250 MHz. The memory operates at 2250 MHz with 18 Gbps effective speed.

NVIDIA counters with the GB100 chip on Blackwell architecture, manufactured on a 5 nm TSMC process. The die is 1628 mm², housing 208,000 million transistors at a density of 127.8M per mm². This is a Server Blackwell (Bxx) generation part. The B200 SXM6 has 18944 shading units, 592 texture mapping units, but only 24 raster operation units, an unusual ratio that prioritizes compute over traditional pixel pushing. The base clock is 120 MHz, rising to a boost of 1830 MHz, with memory at 2000 MHz and 8 Gbps effective. The inclusion of 592 tensor cores is the key differentiator, providing matrix math acceleration absent in the AMD part. The B200 SXM6 has no ray tracing cores listed, while the AMD GPU has 28.

Head-to-Head Benchmarks

The database records no benchmark entries for either GPU, and the head-to-head benchmark list is empty. The wins count for both is zero. However, the specification data allows for direct numerical comparisons that indicate performance deltas. In FP32 throughput, the B200 SXM6 delivers 69.34 TFLOPS versus the AMD Steam Machine GPU's 17.56 TFLOPS, a difference of roughly 3.95 times. The pixel rate tells the opposite story: the AMD part achieves 156.8 GPixel/s, while the B200 SXM6 manages only 43.92 GPixel/s, meaning the AMD GPU is about 3.57 times faster at rasterizing pixels. Texture rate favors the NVIDIA part, with 1,083.4 GTexel/s versus 274.4 GTexel/s, a 3.95 times advantage. Memory bandwidth is the largest disparity, with the B200 SXM6 offering 8.19 TB/s against 288.0 GB/s, a 28.4 times difference. The transistor count difference is similarly stark, with the B200 SXM6 using 15.6 times more transistors than the AMD part.

Specification Differences

The two GPUs differ in nearly every measurable field. The process node is 6 nm for AMD and 5 nm for NVIDIA, both from TSMC. Transistor counts are 13,300 million versus 208,000 million, and die sizes are 204 mm² versus 1628 mm². Transistor density is 65.2M per mm² for AMD and 127.8M per mm² for NVIDIA. Base clocks are 1720 MHz versus 120 MHz, boost clocks are 2450 MHz versus 1830 MHz, and the AMD part has a game clock of 2250 MHz while the NVIDIA part has none. Memory size is 8 GB GDDR6 versus 180 GB HBM3e, with bus widths of 128 bit versus 8192 bit, and bandwidths of 288.0 GB/s versus 8.19 TB/s. Shading units are 1792 versus 18944, TMUs are 112 versus 592, and ROPs are 64 versus 24. The AMD GPU has 28 ray tracing cores; the NVIDIA GPU has none listed. Tensor cores are absent on AMD and present as 592 on NVIDIA. Pixel rate is 156.8 GPixel/s versus 43.92 GPixel/s, and texture rate is 274.4 GTexel/s versus 1,083.4 GTexel/s. FP32 and FP16 performance are both 17.56 TFLOPS for AMD and both 69.34 TFLOPS for NVIDIA. TDP is 110 W versus 1000 W, with the NVIDIA part requiring a suggested PSU of 1400 W. The AMD GPU has no power connectors, while the NVIDIA part has none listed. Bus interfaces differ, with the NVIDIA part using PCIe 6.0 x16 and the AMD part listing none. Display outputs are 1x HDMI 2.1a and 1x DisplayPort 2.1 for AMD, versus no outputs for NVIDIA. API support includes DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 for AMD, while NVIDIA lists N/A for all three. The release dates are 2026-06-28 for AMD and 2024-10-31 for NVIDIA. The NVIDIA part has a predecessor (Server Hopper) and successor (Server Rubin), while the AMD part has neither. The B200 SXM6 has a launch MSRP of 34,999 USD, while the AMD part has none listed. The NVIDIA part is an SXM Module with slot width specified, while the AMD part has no slot width. Dimensions are only listed for the AMD part.

FAQ

Q: Which GPU has higher memory bandwidth?

A: The NVIDIA B200 SXM6 delivers 8.19 TB/s of bandwidth, while the AMD Steam Machine GPU provides 288.0 GB/s, a difference of approximately 28.4 times.

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

A: Yes, it includes 28 ray tracing cores and supports DirectX 12 Ultimate (12_2), which includes ray tracing features. The NVIDIA B200 SXM6 lists no ray tracing cores.

Q: What is the power consumption difference?

A: The AMD Steam Machine GPU has a TDP of 110 W and uses no power connectors. The NVIDIA B200 SXM6 has a TDP of 1000 W and requires a suggested PSU of 1400 W.

Q: Can the NVIDIA B200 SXM6 output to a display?

A: No, it has no display outputs. The AMD Steam Machine GPU includes 1x HDMI 2.1a and 1x DisplayPort 2.1.

Q: How do their compute capabilities compare?

A: The NVIDIA B200 SXM6 offers 69.34 TFLOPS FP32 and includes 592 tensor cores. The AMD Steam Machine GPU provides 17.56 TFLOPS FP32 with no tensor cores.

Q: What are their release dates?

A: The AMD Steam Machine GPU was released on 2026-06-28. The NVIDIA B200 SXM6 was released on 2024-10-31.

The Verdict

The data supports a binary choice based on workload. The AMD Steam Machine GPU is the appropriate selection for gaming consoles and compact systems where low power draw (110 W), modest dimensions (156 mm by 152 mm by 162 mm), and direct display connectivity are required. Its 8 GB memory and 288.0 GB/s bandwidth suffice for consumer gaming, and its pixel rate of 156.8 GPixel/s outperforms the NVIDIA part by 3.57 times in rasterization tasks. The NVIDIA B200 SXM6 is the appropriate selection for server deployments focused on AI, machine learning, and high-bandwidth compute. Its 180 GB HBM3e memory, 8.19 TB/s bandwidth, 592 tensor cores, and 69.34 TFLOPS FP32 performance are the defining metrics. The 1000 W TDP and 1400 W suggested PSU indicate dedicated infrastructure requirements. The lack of display outputs and API support for graphics standards confirms its compute-only role. Neither GPU outperforms the other in aggregate; they serve separate markets with no benchmark overlap in the database. The percentile ranking for both is 50, indicating median standing among all GPUs, but the recorded specifications show that median status means different things for each: the AMD part is a median gaming GPU, while the NVIDIA part is a median server accelerator. The choice rests entirely on the intended application, and the data provides no ambiguity.