AMD Steam Machine GPU vs NVIDIA GeForce RTX 5070 Mobile 12 GB Comparison

Head-to-Head Benchmarks

The recorded data contains no direct head-to-head benchmark results between the AMD Steam Machine GPU and the NVIDIA GeForce RTX 5070 Mobile 12 GB. Both entries show an empty benchmark array, an average benchmark score of zero, and zero wins in the head-to-head comparison. The percentile versus all GPUs is identical for both at 50, placing them at the exact midpoint of the database distribution. This absence of measured results means that any performance ranking must be inferred from the architectural and specification differences rather than from direct empirical testing.

The AMD Steam Machine GPU carries an FP32 compute rating of 17.56 TFLOPS, while the NVIDIA GeForce RTX 5070 Mobile 12 GB lists 13.13 TFLOPS. On paper, the AMD part holds a 4.43 TFLOPS advantage in raw single-precision floating point throughput. That is a meaningful margin, approximately 33.7% higher than the NVIDIA figure. Conversely, the NVIDIA chip counters with a substantially larger memory subsystem. Its 12 GB GDDR7 pool operates over a 192-bit bus, yielding 576.0 GB/s of bandwidth. The AMD GPU offers 8 GB of GDDR6 on a 128-bit bus for 288.0 GB/s. The NVIDIA part therefore provides exactly double the memory bandwidth and 50% more memory capacity.

Pixel throughput tells a different story. The AMD Steam Machine GPU achieves 156.8 GPixel/s, more than double the NVIDIA figure of 68.40 GPixel/s. Texture rate favors AMD as well, at 274.4 GTexel/s versus 205.2 GTexel/s for the RTX 5070 Mobile. In fill-rate bound workloads, the AMD GPU shows a clear theoretical edge. The NVIDIA part instead counters with a much higher transistor count at 21,900 million versus 13,300 million, and a higher transistor density of 121.0M per mm² against 65.2M per mm².

Where Each One Wins

The AMD Steam Machine GPU appears optimized for scenarios that stress raw compute and fill rate. Its FP32 output of 17.56 TFLOPS leads the NVIDIA part by 4.43 TFLOPS, suggesting an advantage in general compute workloads that scale with shader throughput. The pixel rate of 156.8 GPixel/s and texture rate of 274.4 GTexel/s further indicate strength in rasterization-heavy tasks where the GPU must fill and texture large numbers of pixels per frame. The 64 ROPs on the AMD chip outnumber the 48 ROPs on the NVIDIA chip, reinforcing this interpretation. For games or applications that push high resolutions and heavy post-processing effects, the AMD part has the theoretical fill-rate headroom.

The NVIDIA GeForce RTX 5070 Mobile 12 GB instead wins in memory capacity, memory bandwidth, and tensor core availability. Its 12 GB frame buffer accommodates larger textures and higher-resolution assets than the 8 GB on the AMD GPU. The 576.0 GB/s bandwidth is exactly double the AMD figure, which matters for bandwidth-hungry operations such as ray tracing acceleration structures, high-resolution textures, and data-intensive compute. The 144 tensor cores give the NVIDIA part a dedicated hardware path for AI workloads, while the AMD GPU lists no tensor core count at all. The 36 RT cores on the NVIDIA chip also outnumber the 28 RT cores on the AMD part, suggesting a potential advantage in ray-traced scenes, though no benchmark data confirms this.

The power envelope favors NVIDIA distinctly. The RTX 5070 Mobile draws 50 W according to the database, while the AMD Steam Machine GPU lists 110 W. That is a 60 W difference, meaning the NVIDIA part delivers its features at less than half the thermal design power. The NVIDIA GPU is also classified as an IGP, indicating an integrated form factor suitable for portable devices, whereas the AMD GPU is a discrete component with physical dimensions of 156 mm length, 152 mm height, and 162 mm width.

Architecture Differences

The two GPUs come from different architectural generations and design philosophies. The AMD Steam Machine GPU uses the Navi 33 chip on the RDNA 3.0 architecture, with the codename Hotpink Bonefish. It belongs to the Console GPU generation for Valve. The chip is built on a 6 nm process at TSMC, with 13,300 million transistors on a 204 mm² die. The NVIDIA GeForce RTX 5070 Mobile 12 GB uses the GB206 chip on the Blackwell 2.0 architecture, part of the GeForce 50 Mobile generation. It is fabricated on a 5 nm process, also at TSMC, with 21,900 million transistors on a smaller 181 mm² die. The process node difference from 6 nm to 5 nm helps explain how NVIDIA fits 8,600 million more transistors into a die that is 23 mm² smaller.

The shading unit counts diverge sharply. The AMD GPU has 1,792 shading units, while the NVIDIA GPU lists 4,608. That is 2.57 times more shading units on the NVIDIA part, yet the AMD GPU still achieves a higher FP32 rating. This indicates that the two architectures execute floating-point operations differently. The AMD part reaches a boost clock of 2450 MHz, far above the NVIDIA boost of 1425 MHz. The clock advantage of 1025 MHz, combined with the architectural efficiency of RDNA 3.0, allows fewer shading units to produce more FLOPs. The NVIDIA part compensates with 144 texture mapping units versus 112 on AMD, though the AMD texture rate still ends up higher at 274.4 GTexel/s versus 205.2 GTexel/s.

Memory architecture differs by generation as well. The AMD GPU uses GDDR6 at 18 Gbps effective, while the NVIDIA GPU uses GDDR7 at 24 Gbps effective. The NVIDIA memory clock runs at 1500 MHz with 24 Gbps effective throughput, while the AMD memory clock is 2250 MHz with 18 Gbps effective. The bus width difference from 128-bit on AMD to 192-bit on NVIDIA, combined with the faster GDDR7 standard, produces the 2x bandwidth gap. The NVIDIA GPU connects via PCIe 5.0 x16, while the bus interface for the AMD GPU is not listed in the database. Display outputs also differ: the AMD part provides 1x HDMI 2.1a and 1x DisplayPort 2.1, while the NVIDIA output configuration is described as portable device dependent.

The NVIDIA chip includes 144 tensor cores, a feature absent from the AMD specification sheet. Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The production status for both is active. The NVIDIA GPU lists a predecessor in the GeForce 40 Mobile series, while the AMD GPU has no predecessor or successor recorded.

FAQ

Q: Which GPU has higher raw FP32 compute power?

A: The AMD Steam Machine GPU rates 17.56 TFLOPS in FP32, which is 4.43 TFLOPS higher than the NVIDIA GeForce RTX 5070 Mobile 12 GB at 13.13 TFLOPS.

Q: How do the memory configurations compare?

A: The AMD GPU offers 8 GB of GDDR6 on a 128-bit bus with 288.0 GB/s bandwidth. The NVIDIA GPU offers 12 GB of GDDR7 on a 192-bit bus with 576.0 GB/s bandwidth, exactly double the bandwidth and 4 GB more capacity.

Q: Does either GPU include tensor cores?

A: The NVIDIA GeForce RTX 5070 Mobile 12 GB lists 144 tensor cores. The AMD Steam Machine GPU spec sheet does not list a tensor core count.

Q: What is the power consumption difference?

A: The AMD Steam Machine GPU has a TDP of 110 W. The NVIDIA GeForce RTX 5070 Mobile 12 GB has a TDP of 50 W, which is 60 W lower.

Q: Which GPU uses a smaller manufacturing process?

A: The NVIDIA GPU uses a 5 nm process, while the AMD GPU uses a 6 nm process. Both are fabricated by TSMC.

Q: How do the clock speeds differ?

A: The AMD GPU has a base clock of 1720 MHz and a boost clock of 2450 MHz. The NVIDIA GPU has a base clock of 907 MHz and a boost clock of 1425 MHz. The AMD boost clock is 1025 MHz higher.

The Verdict

The data paints two distinct usage profiles. The AMD Steam Machine GPU, with its 17.56 TFLOPS FP32 rating, 156.8 GPixel/s pixel rate, and 274.4 GTexel/s texture rate, presents itself as the higher-throughput compute and rasterization part. Its 64 ROPs and 112 TMUs support this. For workloads that depend on shader math and fill rate, the AMD GPU holds a theoretical advantage that the numbers make explicit.

The NVIDIA GeForce RTX 5070 Mobile 12 GB takes a different path. Its 12 GB GDDR7 memory with 576.0 GB/s bandwidth addresses capacity and bandwidth constraints directly. The 144 tensor cores and 36 RT cores add dedicated hardware for AI and ray tracing that the AMD part does not match on paper. The 50 W TDP, less than half the AMD figure, makes it the only realistic option for power-constrained portable designs. Its IGP classification and portable-device-dependent display outputs confirm this positioning.

The absence of direct benchmark results means neither GPU can be declared a winner in measured performance. The recorded data instead shows a trade-off: the AMD GPU leads in compute, pixel rate, texture rate, and clock speed; the NVIDIA GPU leads in memory capacity, memory bandwidth, power efficiency, tensor core count, and RT core count. A user prioritizing raw rasterization throughput would favor the AMD specifications. A user prioritizing memory bandwidth, AI features, or battery life would favor the NVIDIA specifications. The percentile rankings offer no separation, as both sit at 50.

Specification Differences

| Specification | AMD Steam Machine GPU | NVIDIA GeForce RTX 5070 Mobile 12 GB |

|---|---|---|

| Chip | Navi 33 | GB206 |

| Architecture | RDNA 3.0 | Blackwell 2.0 |

| Generation | Console GPU (Valve) | GeForce 50 Mobile |

| Process Node | 6 nm | 5 nm |

| Transistors | 13,300 million | 21,900 million |

| Die Size | 204 mm² | 181 mm² |

| Transistor Density | 65.2M / mm² | 121.0M / mm² |

| Base Clock | 1720 MHz | 907 MHz |

| Boost Clock | 2450 MHz | 1425 MHz |

| Memory Clock | 2250 MHz 18 Gbps effective | 1500 MHz 24 Gbps effective |

| Memory Size | 8 GB | 12 GB |

| Memory Type | GDDR6 | GDDR7 |

| Memory Bus Width | 128 bit | 192 bit |

| Memory Bandwidth | 288.0 GB/s | 576.0 GB/s |

| Shading Units | 1792 | 4608 |

| TMUs | 112 | 144 |

| ROPs | 64 | 48 |

| RT Cores | 28 | 36 |

| Tensor Cores | None listed | 144 |

| Pixel Rate | 156.8 GPixel/s | 68.40 GPixel/s |

| Texture Rate | 274.4 GTexel/s | 205.2 GTexel/s |

| FP32 | 17.56 TFLOPS | 13.13 TFLOPS |

| FP16 | 17.56 TFLOPS (1:1) | 13.13 TFLOPS (1:1) |

| TDP | 110 W | 50 W |

| Slot Width | Not listed | IGP |

| Bus Interface | Not listed | PCIe 5.0 x16 |

| Display Outputs | 1x HDMI 2.1a, 1x DisplayPort 2.1 | Portable Device Dependent |

| Dimensions | 156 mm length, 152 mm height, 162 mm width | Not listed |

| Release Date | 2026-06-28 | 2026-05-31 |

| Predecessor | None listed | GeForce 40 Mobile |

The two GPUs share identical API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both have active production status, use TSMC as the foundry, and list no launch MSRP in the database. The NVIDIA part released approximately one month earlier according to the recorded dates. The AMD part is the only one with physical dimensions recorded, and the NVIDIA part is the only one with a slot width classification.