AMD Ryzen Z2 A GPU vs AMD Steam Machine GPU Comparison

The AMD Ryzen Z2 A GPU and the AMD Steam Machine GPU represent two very different approaches to console-class graphics, and the recorded data shows a clear separation in their intended workloads. The Steam Machine GPU, built on the Navi 33 chip with RDNA 3.0 architecture, delivers substantially higher raw performance metrics across every major compute category. The Ryzen Z2 A GPU, using the Van Gogh chip with RDNA 2.0, is a low-power part designed for efficiency and portability, with its 15 W TDP contrasting sharply with the Steam Machine GPU’s 110 W TDP. The benchmark results, while not containing direct head-to-head scores, are supported by the specification differences and the percentile rankings, which place both at the 50th percentile versus all GPUs, indicating they occupy different segments of the performance distribution.

Where Each One Wins

The Steam Machine GPU wins decisively in every absolute performance category recorded in the database. Its FP32 compute reaches 17.56 TFLOPS, which is more than ten times the Ryzen Z2 A GPU’s 1.638 TFLOPS. The texture rate of 274.4 GTexel/s versus 51.20 GTexel/s shows a 5.4x advantage, and the pixel rate of 156.8 GPixel/s versus 25.60 GPixel/s represents a 6.1x lead. These numbers indicate that the Steam Machine GPU is built for demanding rasterization and compute workloads, while the Ryzen Z2 A GPU is not competitive in these areas.

The Ryzen Z2 A GPU wins in efficiency and form factor. Its 15 W TDP is a fraction of the Steam Machine GPU’s 110 W TDP, making it suitable for compact, low-power enclosures. The Ryzen Z2 A GPU uses LPDDR5 memory with 16 GB capacity, doubling the Steam Machine GPU’s 8 GB GDDR6 allocation. However, the memory bandwidth tells a different story: the Steam Machine GPU achieves 288.0 GB/s, nearly three times the Ryzen Z2 A GPU’s 102.4 GB/s. The Ryzen Z2 A GPU also has a single USB Type-C display output, whereas the Steam Machine GPU provides 1x HDMI 2.1a and 1x DisplayPort 2.1, giving the latter more flexible connectivity.

The physical dimensions also favor the Ryzen Z2 A GPU, which has no recorded length, height, or width in the database, implying it is a chip-level component. The Steam Machine GPU measures 156 mm by 152 mm by 162 mm, indicating a full add-in card form factor. The Ryzen Z2 A GPU’s lack of power connectors and its 15 W TDP suggest it can be powered directly through a motherboard or carrier board, while the Steam Machine GPU requires no external connectors but draws 110 W, likely through a slot or dedicated header.

Architecture Differences

The architectural divide is generational. The Ryzen Z2 A GPU uses RDNA 2.0 on a 7 nm TSMC process, with 2,400 million transistors on a 163 mm² die, yielding a transistor density of 14.7 million per mm². The Steam Machine GPU employs RDNA 3.0 on a 6 nm TSMC process, packing 13,300 million transistors into a 204 mm² die, achieving a density of 65.2 million per mm². The newer process and denser integration give the Steam Machine GPU a 5.5x transistor count advantage within a die that is only 25% larger in area.

The compute resources differ sharply. The Steam Machine GPU has 1792 shading units, 112 texture mapping units, 64 render output units, and 28 ray tracing cores. The Ryzen Z2 A GPU has 512 shading units, 32 TMUs, 16 ROPs, and 8 RT cores. This translates to a 3.5x advantage in shading units, a 3.5x advantage in TMUs, a 4x advantage in ROPs, and a 3.5x advantage in RT cores for the Steam Machine GPU. The FP16 throughput also diverges: the Steam Machine GPU delivers 17.56 TFLOPS at a 1:1 ratio to FP32, while the Ryzen Z2 A GPU delivers 3.277 TFLOPS at a 2:1 ratio, meaning the latter halves its FP16 rate relative to FP32.

Memory architecture differs by generation and type. The Ryzen Z2 A GPU uses LPDDR5 at 800 MHz with 6.4 Gbps effective speed, on a 128-bit bus, providing 102.4 GB/s. The Steam Machine GPU uses GDDR6 at 2250 MHz with 18 Gbps effective speed, also on a 128-bit bus, delivering 288.0 GB/s. The Steam Machine GPU’s memory clock is nearly three times higher, and its effective data rate is 2.8x faster. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical.

Clock speeds also favor the Steam Machine GPU. Its base clock is 1720 MHz and boost reaches 2450 MHz, with a game clock of 2250 MHz. The Ryzen Z2 A GPU runs at 1000 MHz base and 1600 MHz boost, a 72% lower base and 53% lower boost. The Steam Machine GPU’s codename is “Hotpink Bonefish,” while the Ryzen Z2 A GPU has no codename recorded. The Ryzen Z2 A GPU belongs to the “Console GPU (AMD)” generation, while the Steam Machine GPU is in the “Console GPU (Valve)” generation, reflecting different platform ownership.

Head-to-Head Benchmarks

No direct head-to-head benchmark scores are recorded in the database, so the comparison relies on the measured specification-derived rates. The FP32 throughput is the most telling metric. The Steam Machine GPU’s 17.56 TFLOPS is 10.7 times the Ryzen Z2 A GPU’s 1.638 TFLOPS. In practical terms, this means the Steam Machine GPU can execute over ten times as many floating-point operations per second, which directly impacts shader complexity, physics simulation, and compute-based rendering effects.

Texture fill rate shows a similar gap. The Steam Machine GPU’s 274.4 GTexel/s is 5.36 times the Ryzen Z2 A GPU’s 51.20 GTexel/s. Higher texture rates allow more detailed textures and more frequent texture fetches per frame, which matters for high-resolution rendering and heavy material systems. Pixel fill rate follows, with the Steam Machine GPU at 156.8 GPixel/s versus 25.60 GPixel/s, a 6.13x difference. This affects resolution scaling and multisample anti-aliasing performance.

Memory bandwidth is another major divider. The Steam Machine GPU’s 288.0 GB/s is 2.81 times the Ryzen Z2 A GPU’s 102.4 GB/s. While the Ryzen Z2 A GPU has double the memory capacity at 16 GB versus 8 GB, the bandwidth deficit means it cannot feed data to the GPU as quickly. For frame buffers, texture streaming, and geometry data, the Steam Machine GPU has a clear throughput advantage.

Ray tracing resources also differ. The Steam Machine GPU has 28 RT cores versus 8 on the Ryzen Z2 A GPU, a 3.5x difference. Given the same DirectX 12 Ultimate feature set, the Steam Machine GPU is better positioned for ray-traced effects, though the Ryzen Z2 A GPU’s lower compute throughput would also constrain ray tracing performance. The transistor density difference, 65.2M per mm² versus 14.7M per mm², highlights the architectural leap: the Steam Machine GPU packs more than four times the transistors per unit area.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Steam Machine GPU delivers 17.56 TFLOPS FP32, which is 10.7 times the AMD Ryzen Z2 A GPU’s 1.638 TFLOPS.

Q: What are the memory capacities and types?

A: The Ryzen Z2 A GPU uses 16 GB of LPDDR5, while the Steam Machine GPU uses 8 GB of GDDR6. The Steam Machine GPU has 288.0 GB/s bandwidth, versus 102.4 GB/s for the Ryzen Z2 A GPU.

Q: How do the power requirements compare?

A: The Ryzen Z2 A GPU has a 15 W TDP, while the Steam Machine GPU has a 110 W TDP. The Steam Machine GPU has no power connectors, while the Ryzen Z2 A GPU also has no power connectors recorded.

Q: Which GPU has more shading units and ray tracing cores?

A: The Steam Machine GPU has 1792 shading units and 28 RT cores, versus 512 shading units and 8 RT cores on the Ryzen Z2 A GPU.

Q: Are the APIs the same?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What are the display outputs?

A: The Ryzen Z2 A GPU has 1x USB Type-C, while the Steam Machine GPU has 1x HDMI 2.1a and 1x DisplayPort 2.1.

Specification Differences

The two GPUs differ across nearly every recorded specification. The chip is Van Gogh for the Ryzen Z2 A GPU and Navi 33 for the Steam Machine GPU. The architecture is RDNA 2.0 versus RDNA 3.0. The process node is 7 nm versus 6 nm, both from TSMC. Transistor count is 2,400 million versus 13,300 million, and die size is 163 mm² versus 204 mm², with transistor density at 14.7M per mm² versus 65.2M per mm².

Clock specifications diverge: base clock 1000 MHz versus 1720 MHz, boost clock 1600 MHz versus 2450 MHz, and memory clock 800 MHz (6.4 Gbps effective) versus 2250 MHz (18 Gbps effective). The Steam Machine GPU also has a game clock of 2250 MHz, which the Ryzen Z2 A GPU lacks. Memory size differs (16 GB versus 8 GB), type (LPDDR5 versus GDDR6), and bandwidth (102.4 GB/s versus 288.0 GB/s), but the bus width is the same at 128 bit.

Compute units vary: shading units 512 versus 1792, TMUs 32 versus 112, ROPs 16 versus 64, and RT cores 8 versus 28. Pixel rate is 25.60 GPixel/s versus 156.8 GPixel/s, texture rate is 51.20 GTexel/s versus 274.4 GTexel/s, and FP32 is 1.638 TFLOPS versus 17.56 TFLOPS. FP16 is 3.277 TFLOPS (2:1) versus 17.56 TFLOPS (1:1). TDP is 15 W versus 110 W.

The Steam Machine GPU has physical dimensions of 156 mm by 152 mm by 162 mm, while the Ryzen Z2 A GPU has none recorded. Display outputs differ: 1x USB Type-C versus 1x HDMI 2.1a and 1x DisplayPort 2.1. The generation is “Console GPU (AMD)” versus “Console GPU (Valve),” and the Steam Machine GPU has the codename “Hotpink Bonefish,” while the Ryzen Z2 A GPU has none. Both have no launch MSRP, no power connectors, no suggested PSU, and no bus interface recorded. Both are marked as Active in production status.

The Verdict

The data points to a straightforward conclusion for most use cases. The AMD Steam Machine GPU is the superior choice for any workload that demands high frame rates, high resolutions, or heavy compute, given its 17.56 TFLOPS FP32, 274.4 GTexel/s texture rate, and 288.0 GB/s memory bandwidth. Its 1792 shading units and 28 RT cores provide the resources needed for modern game rendering, including ray-traced effects, and its 110 W TDP is reasonable for a desktop-style console or mini PC.

The AMD Ryzen Z2 A GPU is the appropriate selection for scenarios prioritizing power efficiency and compact integration. Its 15 W TDP allows for passive cooling or small fan solutions in handheld or embedded devices. The 16 GB LPDDR5 memory capacity is notable, exceeding the Steam Machine GPU’s 8 GB, which could benefit workloads that require large working sets but do not need high bandwidth. However, the 1.638 TFLOPS FP32 and 51.20 GTexel/s rates limit it to lighter graphical loads, such as 2D titles, indie games, or streaming applications.

The 50th percentile ranking for both against all GPUs suggests neither is an outlier in the broader market; they sit at the median, but in different performance tiers. The Steam Machine GPU’s 10.7x FP32 advantage and 6.1x pixel rate advantage make it the only viable option for demanding gaming. The Ryzen Z2 A GPU’s value lies in its low power envelope and doubled memory capacity, not in raw speed. Users with strict thermal or power budgets should choose the Ryzen Z2 A GPU, while those seeking maximum performance from the recorded metrics should select the Steam Machine GPU. The architectural gap, from RDNA 2.0 on 7 nm to RDNA 3.0 on 6 nm, reinforces that these are products from different eras of design, and the Steam Machine GPU is the newer, more capable part.