AMD Ryzen Z2 GPU vs AMD Steam Machine GPU Comparison

FAQ

Q: How do the two GPUs compare in raw compute performance?

A: The AMD Steam Machine GPU delivers 17.56 TFLOPS FP32, while the AMD Ryzen Z2 GPU delivers 8.294 TFLOPS. This makes the Steam Machine GPU approximately 2.1 times faster in raw floating-point throughput.

Q: Which GPU has more memory bandwidth?

A: The AMD Steam Machine GPU has 288.0 GB/s of bandwidth using 8 GB of GDDR6 on a 128-bit bus. The AMD Ryzen Z2 GPU has 119.9 GB/s using 16 GB of LPDDR5X on the same 128-bit bus width. The Steam Machine GPU provides roughly 2.4 times the memory bandwidth.

Q: What are the physical dimensions of each GPU?

A: The Steam Machine GPU measures 156 mm by 152 mm by 162 mm. The Ryzen Z2 GPU has no recorded dimensions in the database, indicating it is likely an integrated solution without a standalone board.

Q: What is the power consumption difference?

A: The Ryzen Z2 GPU has a 28 W TDP, while the Steam Machine GPU has a 110 W TDP. The Steam Machine GPU consumes about 3.9 times the power budget.

Q: Which GPU uses a smaller manufacturing process?

A: The Ryzen Z2 GPU uses a 4 nm TSMC process, while the Steam Machine GPU uses a 6 nm TSMC process. The 4 nm node allows the Ryzen Z2 to pack 25,390 million transistors into a 178 mm² die, yielding a transistor density of 142.6M per mm².

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. They also both use the RDNA 3.0 architecture.

Architecture Differences

Both GPUs are built on AMD's RDNA 3.0 architecture, but they are fundamentally different implementations. The Ryzen Z2 GPU uses the Hawk Point chip on a 4 nm TSMC process, while the Steam Machine GPU uses the Navi 33 chip, codenamed Hotpink Bonefish, on a 6 nm TSMC process.

The transistor counts reflect this split. The Ryzen Z2 packs 25,390 million transistors into a 178 mm² die, giving it a density of 142.6M per mm². The Steam Machine GPU has 13,300 million transistors spread over a larger 204 mm² die, resulting in a density of only 65.2M per mm². The 4 nm node clearly enables far denser integration for the Ryzen Z2.

The compute resources differ substantially. The Steam Machine GPU has 1792 shading units, 112 texture mapping units, 64 ROPs, and 28 ray tracing cores. The Ryzen Z2 GPU has 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores. In every category, the Steam Machine GPU has more than double the execution resources.

Clock behavior also differs. The Ryzen Z2 has a base clock of 800 MHz and a boost of 2700 MHz. The Steam Machine GPU has a much higher base clock of 1720 MHz, a game clock of 2250 MHz, and a boost of 2450 MHz. The Steam Machine GPU's higher base clock indicates sustained performance capability, while the Ryzen Z2 relies on boosting to reach its peak.

Memory architecture diverges significantly. The Ryzen Z2 uses 16 GB of LPDDR5X at 937 MHz with 7.5 Gbps effective speed, delivering 119.9 GB/s over a 128-bit bus. The Steam Machine GPU uses 8 GB of GDDR6 at 2250 MHz with 18 Gbps effective speed, delivering 288.0 GB/s over the same 128-bit bus. The Steam Machine GPU's GDDR6 memory operates at more than double the effective data rate.

Display outputs also differ. The Ryzen Z2 has a single USB Type-C output, while the Steam Machine GPU has one HDMI 2.1a and one DisplayPort 2.1 connection. The Steam Machine GPU's physical board dimensions are recorded at 156 mm by 152 mm by 162 mm, while the Ryzen Z2 has no recorded dimensions.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark scores for these two GPUs. The recorded data shows zero wins for each side and no benchmark entries in the comparison table. However, the architectural specifications allow for a clear performance projection.

The Steam Machine GPU's FP32 throughput of 17.56 TFLOPS is more than double the Ryzen Z2's 8.294 TFLOPS. In texture processing, the Steam Machine GPU achieves 274.4 GTexel/s versus 129.6 GTexel/s for the Ryzen Z2, a lead of roughly 2.1 times. Pixel fill rates follow the same pattern: 156.8 GPixel/s for the Steam Machine GPU against 86.40 GPixel/s for the Ryzen Z2, a 1.8 times advantage.

Memory bandwidth is the largest gap. The Steam Machine GPU's 288.0 GB/s is 2.4 times the Ryzen Z2's 119.9 GB/s. This bandwidth advantage matters for high-resolution textures and memory-intensive workloads, where the Steam Machine GPU can feed its larger pool of shading units more effectively.

The Ryzen Z2 does hold advantages in specific areas. Its 16 GB memory capacity is double the Steam Machine GPU's 8 GB. Its boost clock of 2700 MHz is 250 MHz higher than the Steam Machine GPU's 2450 MHz boost. The Ryzen Z2 also achieves higher transistor density, but density alone does not translate to benchmark performance.

Both GPUs sit at the 50th percentile in the database's overall GPU rankings. This places them in the middle of the performance distribution, though the specification sheet suggests the Steam Machine GPU should have a decisive edge in most compute-bound scenarios. The power envelope tells the story: the Ryzen Z2 operates at 28 W, while the Steam Machine GPU uses 110 W. The Steam Machine GPU spends nearly four times the power budget to deliver roughly double the compute resources.

The Verdict

The data points to a clear performance hierarchy. The AMD Steam Machine GPU is the substantially faster part. It more than doubles the Ryzen Z2 in shading units, texture units, ROPs, ray tracing cores, FP32 throughput, texture rate, and pixel rate. Its memory bandwidth advantage of 288.0 GB/s versus 119.9 GB/s is decisive for bandwidth-sensitive rendering.

The AMD Ryzen Z2 GPU is not without purpose. Its 28 W TDP makes it suitable for low-power environments, and its 16 GB memory capacity exceeds the Steam Machine GPU's 8 GB. The Ryzen Z2's 4 nm process and higher transistor density indicate a modern, efficient design. But the recorded specifications show that efficiency comes at the cost of raw performance.

The Steam Machine GPU's 110 W TDP and larger physical footprint (156 mm by 152 mm by 162 mm) confirm it is designed for a stationary console chassis with adequate cooling. The Ryzen Z2, with no recorded dimensions and a single USB Type-C output, appears built for portable or compact systems where power draw is the limiting factor.

Neither GPU has recorded benchmark scores, so the verdict rests on architectural comparisons. The Steam Machine GPU's resource advantages are consistent across every compute category. The Ryzen Z2's advantages are limited to memory capacity, process node, and power efficiency. For users prioritizing performance, the Steam Machine GPU is the clear choice from the data. For users prioritizing efficiency and memory capacity, the Ryzen Z2 has a defined role.

Specification Differences

The two GPUs differ on nearly every recorded specification except architecture, manufacturer, API support, and bus width.

| Specification | AMD Ryzen Z2 GPU | AMD Steam Machine GPU |

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

| Chip | Hawk Point | Navi 33 |

| Codename | None recorded | Hotpink Bonefish |

| Generation | Console GPU (AMD) | Console GPU (Valve) |

| Process node | 4 nm | 6 nm |

| Transistors | 25,390 million | 13,300 million |

| Die size | 178 mm² | 204 mm² |

| Transistor density | 142.6M / mm² | 65.2M / mm² |

| Base clock | 800 MHz | 1720 MHz |

| Boost clock | 2700 MHz | 2450 MHz |

| Game clock | None recorded | 2250 MHz |

| Memory clock | 937 MHz, 7.5 Gbps effective | 2250 MHz, 18 Gbps effective |

| Memory size | 16 GB | 8 GB |

| Memory type | LPDDR5X | GDDR6 |

| Memory bandwidth | 119.9 GB/s | 288.0 GB/s |

| Shading units | 768 | 1792 |

| TMUs | 48 | 112 |

| ROPs | 32 | 64 |

| Ray tracing cores | 12 | 28 |

| Pixel rate | 86.40 GPixel/s | 156.8 GPixel/s |

| Texture rate | 129.6 GTexel/s | 274.4 GTexel/s |

| FP32 | 8.294 TFLOPS | 17.56 TFLOPS |

| TDP | 28 W | 110 W |

| Display outputs | 1x USB Type-C | 1x HDMI 2.1a, 1x DisplayPort 2.1 |

| Dimensions | None recorded | 156 mm x 152 mm x 162 mm |

| Release date | 2024-12-31 | 2026-06-28 |

Where Each One Wins

The AMD Ryzen Z2 GPU wins in power efficiency. Its 28 W TDP is a fraction of the Steam Machine GPU's 110 W, making it suitable for thermally constrained designs. It also wins in memory capacity with 16 GB versus 8 GB, which benefits workloads that require large working sets rather than high throughput. The Ryzen Z2's 4 nm process and 142.6M per mm² transistor density show a modern manufacturing advantage, and its 2700 MHz boost clock is the highest clock speed recorded between the two.

The AMD Steam Machine GPU wins in every raw performance category. It has more than double the shading units (1792 versus 768), TMUs (112 versus 48), ROPs (64 versus 32), and ray tracing cores (28 versus 12). Its FP32 throughput of 17.56 TFLOPS is more than double the Ryzen Z2's 8.294 TFLOPS. Memory bandwidth of 288.0 GB/s is 2.4 times higher, which directly benefits high-resolution rendering and texture streaming. The Steam Machine GPU also has a higher base clock of 1720 MHz versus 800 MHz, indicating stronger sustained performance without relying on boost behavior.

The release timeline also favors the Steam Machine GPU as a later product, with a recorded release date in 2026 versus the Ryzen Z2's late 2024 date. The Steam Machine GPU's dedicated display outputs (HDMI 2.1a and DisplayPort 2.1) make it a more flexible option for external displays, while the Ryzen Z2's single USB Type-C output suggests a more integrated, portable deployment. The use-case split is straightforward: the Ryzen Z2 serves low-power, high-capacity memory scenarios, while the Steam Machine GPU dominates performance-oriented console workloads.