AMD Steam Machine GPU vs NVIDIA GeForce RTX 5080 Mobile Comparison

The AMD Steam Machine GPU and NVIDIA GeForce RTX 5080 Mobile occupy different corners of the GPU market, yet both are active products with distinct strengths. The RTX 5080 Mobile shows a much higher percentile ranking at 81 compared to the Steam Machine GPU’s 50, but the latter is a console-class part with a lower power envelope and a different feature set. The data in the database provides a clear picture of where each GPU fits, though benchmark scores are only recorded for the RTX 5080 Mobile, limiting direct numerical comparisons. Still, architectural and specification differences explain the performance gap and use-case separation.

The Verdict

The RTX 5080 Mobile is the stronger GPU by a wide margin based on its recorded benchmark performance and percentile standing. It sits at the 81st percentile of all GPUs in the database, while the Steam Machine GPU sits at the 50th percentile. The RTX 5080 Mobile’s average benchmark score is 38349, and its nearest rivals in the database include the NVIDIA GeForce RTX 4080 Mobile (avg score 38135, only 0.6% behind), the NVIDIA GeForce MX570 (38299, 0.1% ahead), and the AMD Radeon Pro 580X (38706, 0.9% ahead). These deltas are small, indicating the RTX 5080 Mobile clusters tightly with those parts, but it clearly outclasses the Steam Machine GPU in compute and graphics workloads.

For a laptop or portable device where space and power are constrained, the RTX 5080 Mobile is the pick. It uses 80 W TDP, has 16 GB of GDDR7 memory on a 256-bit bus, and delivers 23.04 TFLOPS FP32. The Steam Machine GPU, with 110 W TDP and 8 GB GDDR6 on a 128-bit bus, delivers 17.56 TFLOPS FP32. The RTX 5080 Mobile has more shading units (7680 vs 1792), more RT cores (60 vs 28), and more texture mapping units (240 vs 112). Benchmark results confirm the RTX 5080 Mobile’s lead in synthetic tests, with a 3DMark Steel Nomad DX12 score of 4952 and a Geekbench OpenCL score of 166986.

The Steam Machine GPU, however, is not without merit. It has a higher boost clock (2450 MHz vs 1500 MHz) and a higher base clock (1720 MHz vs 975 MHz), plus a game clock of 2250 MHz that the RTX 5080 Mobile lacks entirely. Its pixel rate is higher at 156.8 GPixel/s versus 144.0 GPixel/s, and its texture rate, while lower, still reaches 274.4 GTexel/s. For a console-style GPU in a Valve-designed machine, the Steam Machine GPU offers a compact footprint with dimensions of 156 mm by 152 mm by 162 mm, and it uses no power connectors. The RTX 5080 Mobile is an integrated graphics package (IGP) with no dimensions listed, making it suited for thin laptops.

The verdict from the data: choose the RTX 5080 Mobile for raw performance, higher memory capacity, and newer memory technology. Choose the Steam Machine GPU for its higher clock speeds, smaller physical presence, and lower bandwidth requirements, though the RTX 5080 Mobile’s 896.0 GB/s bandwidth dwarfs the Steam Machine GPU’s 288.0 GB/s.

Where Each One Wins

The RTX 5080 Mobile wins in every recorded benchmark category. Its 3DMark Steel Nomad DX12 score of 4952 demonstrates strong DirectX 12 performance. Geekbench OpenCL (166986) and Vulkan (169754) scores are both high, indicating solid compute and graphics API support. PassMark G3D score of 27711 and GPU compute score of 12134 further cement its lead. The RTX 5080 Mobile also excels in memory bandwidth, offering 896.0 GB/s versus 288.0 GB/s, which matters for high-resolution textures and large data sets. Its 16 GB memory capacity doubles the Steam Machine GPU’s 8 GB, and the GDDR7 type is newer than GDDR6.

The Steam Machine GPU wins on clock speeds. Its boost clock of 2450 MHz is substantially higher than the RTX 5080 Mobile’s 1500 MHz, and its base clock of 1720 MHz nearly doubles the RTX 5080 Mobile’s 975 MHz. The Steam Machine GPU also has a defined game clock of 2250 MHz, which the RTX 5080 Mobile does not list. Higher clocks can benefit latency-sensitive tasks, though the RTX 5080 Mobile’s larger shader count (7680 vs 1792) compensates with more parallel throughput. The Steam Machine GPU also has a higher pixel rate (156.8 GPixel/s vs 144.0 GPixel/s), which could benefit certain rasterization workloads, but its texture rate (274.4 GTexel/s) trails the RTX 5080 Mobile’s 360.0 GTexel/s.

In terms of power efficiency, the RTX 5080 Mobile uses less power (80 W TDP) while delivering more performance, indicating a higher performance-per-watt profile. The Steam Machine GPU’s 110 W TDP is higher despite lower overall performance. The RTX 5080 Mobile also has more RT cores (60 vs 28) and tensor cores (240 vs none on the Steam Machine GPU), making it the clear choice for ray tracing and AI-accelerated workloads. The Steam Machine GPU has no tensor cores, so any tensor-based features are absent.

Architecture Differences

The two GPUs come from different architectures and process nodes. The AMD Steam Machine GPU uses the RDNA 3.0 architecture, built on a 6 nm process at TSMC, with the chip codenamed “Hotpink Bonefish” and the chip itself being Navi 33. It belongs to the Console GPU (Valve) generation. The RTX 5080 Mobile uses the Blackwell 2.0 architecture, built on a 5 nm process at TSMC, with the chip being GB203. It belongs to the GeForce 50 Mobile series, and its predecessor is the GeForce 40 Mobile.

Transistor counts differ significantly. The RTX 5080 Mobile has 45,600 million transistors on a 378 mm² die, yielding a transistor density of 120.6M per mm². The Steam Machine GPU has 13,300 million transistors on a 204 mm² die, with a density of 65.2M per mm². The RTX 5080 Mobile’s higher density and larger die explain its greater compute capability.

Memory architecture differs as well. The Steam Machine GPU uses 8 GB of GDDR6 with a 128-bit bus and 288.0 GB/s bandwidth. The RTX 5080 Mobile uses 16 GB of GDDR7 with a 256-bit bus and 896.0 GB/s bandwidth. The RTX 5080 Mobile also has a PCIe 5.0 x16 interface, while the Steam Machine GPU lists no bus interface. Display outputs also differ: the Steam Machine GPU has 1x HDMI 2.1a and 1x DisplayPort 2.1, while the RTX 5080 Mobile’s outputs are described as “Portable Device Dependent.”

Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RTX 5080 Mobile adds tensor cores (240) and more RT cores (60), while the Steam Machine GPU has RT cores (28) but no tensor cores. The Steam Machine GPU’s shading units (1792) are far fewer than the RTX 5080 Mobile’s 7680. The RTX 5080 Mobile also has more ROPs (96 vs 64) and more TMUs (240 vs 112). These architectural differences translate directly into the performance gap seen in benchmarks.

Release dates also differ: the RTX 5080 Mobile was released on 2025-04-01, while the Steam Machine GPU has a release date of 2026-06-28. Both are listed as active production parts. The Steam Machine GPU has no predecessor or successor listed, while the RTX 5080 Mobile’s predecessor is the GeForce 40 Mobile.

FAQ

Q: Which GPU has higher raw FP32 performance?

A: The RTX 5080 Mobile delivers 23.04 TFLOPS FP32, while the Steam Machine GPU delivers 17.56 TFLOPS FP32. The RTX 5080 Mobile leads by 5.48 TFLOPS.

Q: How do memory capacities compare?

A: The RTX 5080 Mobile has 16 GB of GDDR7, while the Steam Machine GPU has 8 GB of GDDR6. The RTX 5080 Mobile also has a 256-bit bus versus 128-bit, and bandwidth of 896.0 GB/s versus 288.0 GB/s.

Q: Which GPU has higher clock speeds?

A: The Steam Machine GPU has a base clock of 1720 MHz and a boost clock of 2450 MHz, plus a game clock of 2250 MHz. The RTX 5080 Mobile has a base clock of 975 MHz and a boost clock of 1500 MHz, with no game clock listed.

Q: What is the power consumption difference?

A: The Steam Machine GPU has a TDP of 110 W, while the RTX 5080 Mobile has a TDP of 80 W. The RTX 5080 Mobile uses less power despite higher performance.

Q: Are there any benchmark scores for the Steam Machine GPU?

A: The database lists no benchmark scores for the Steam Machine GPU. Its percentile is 50, but its average benchmark score is 0, and it has no nearest rivals recorded. The RTX 5080 Mobile has 10 benchmark scores, with an average of 38349.

Q: Does the Steam Machine GPU support tensor cores?

A: No, the Steam Machine GPU lists no tensor cores. The RTX 5080 Mobile has 240 tensor cores, which enables AI-accelerated features.

Head-to-Head Benchmarks

Since the Steam Machine GPU has no recorded benchmark scores, direct head-to-head comparisons rely on specification-derived expectations rather than measured results. The RTX 5080 Mobile’s 3DMark Steel Nomad DX12 score of 4952 shows its DirectX 12 capability. The Steam Machine GPU, with fewer shading units and lower memory bandwidth, would likely score far lower, but no number exists in the database to confirm this.

The RTX 5080 Mobile’s Geekbench OpenCL score of 166986 and Vulkan score of 169754 indicate strong compute performance. Its PassMark G3D score of 27711 and GPU compute score of 12134 reinforce this. The PassMark DirectX scores are lower (DX9: 314, DX10: 171, DX11: 253, DX12: 116), which is typical for synthetic tests that vary by API, but all are recorded for the RTX 5080 Mobile only.

The biggest wins for the RTX 5080 Mobile are in memory bandwidth and capacity. At 896.0 GB/s, it offers 3.1 times the bandwidth of the Steam Machine GPU’s 288.0 GB/s. The 16 GB memory size is double the 8 GB on the Steam Machine GPU. The RTX 5080 Mobile also has 4.3 times the shading units (7680 vs 1792) and 4.3 times the FP32 throughput when comparing raw TFLOPS (23.04 vs 17.56, though the ratio is actually 1.31, not 4.3; the shading unit count is the 4.3x figure). Its texture rate of 360.0 GTexel/s exceeds the Steam Machine GPU’s 274.4 GTexel/s by 31%.

The Steam Machine GPU’s wins are limited to clock speeds and pixel rate. Its boost clock of 2450 MHz is 63% higher than the RTX 5080 Mobile’s 1500 MHz. Its base clock of 1720 MHz is 76% higher than 975 MHz. The pixel rate of 156.8 GPixel/s beats the RTX 5080 Mobile’s 144.0 GPixel/s by 8.9%. These advantages, however, do not overcome the RTX 5080 Mobile’s massive lead in shader count, memory bandwidth, and tensor core support.

The nearest rivals for the RTX 5080 Mobile in the database show how tightly it competes with other mobile and older desktop parts. The NVIDIA GeForce MX570 is 0.1% ahead, the RTX 4080 Mobile is 0.6% behind, and the MX570 A is 0.9% ahead. These deltas are within a single percentage point, meaning the RTX 5080 Mobile is a mid-pack performer among its closest peers. The Steam Machine GPU, with no rivals listed, cannot be similarly contextualized.

In summary, the RTX 5080 Mobile dominates every measurable benchmark and specification category except clock speeds and pixel rate. The Steam Machine GPU offers a compact, console-oriented design with high clocks and a lower memory footprint, but the RTX 5080 Mobile’s architectural advantages make it the superior choice for demanding workloads.