AMD Ryzen Z1 GPU vs AMD Ryzen Z2 A GPU Comparison

Head-to-Head Benchmarks

The recorded data shows no benchmark scores for either the AMD Ryzen Z1 GPU or the AMD Ryzen Z2 A GPU. Both entries report an average benchmark score of zero, and the database lists no head-to-head benchmark comparisons. Consequently, the wins count for each part is zero. The absence of measured data means that no direct performance delta can be derived from the database. The percentile ranking for both GPUs is identical at 50, placing each in the middle of the field of all recorded GPUs. Without benchmark results, the analysis must rely on the architectural and specification data available in the database, which provides a clear picture of two very different designs.

The Ryzen Z1 GPU delivers a peak FP32 throughput of 2.560 TFLOPS, while the Ryzen Z2 A GPU reaches 1.638 TFLOPS. That places the Z1 approximately 56.3% ahead in raw single-precision compute. FP16 performance follows the same ratio, with the Z1 at 5.120 TFLOPS versus 3.277 TFLOPS for the Z2 A. Pixel throughput favors the Z2 A, however, at 25.60 GPixel/s versus 20.00 GPixel/s for the Z1. Texture rate also goes to the Z2 A, with 51.20 GTexel/s against 40.00 GTexel/s.

Where Each One Wins

The Ryzen Z1 GPU wins on compute density and raw floating-point throughput. Its 2.560 TFLOPS FP32 figure is the highest recorded among the two, and the FP16 rate of 5.120 TFLOPS doubles that. The Z1 also uses a more advanced 4 nm process from TSMC, fitting 25,390 million transistors into a 178 mm² die. Transistor density reaches 142.6 million per square millimeter. The Z1 runs at higher clocks, with a 1500 MHz base and 2500 MHz boost, compared to 1000 MHz base and 1600 MHz boost for the Z2 A. The Z1 carries a 30 W TDP, which is double the 15 W TDP of the Z2 A, indicating that the Z1 trades power for peak compute capability.

The Ryzen Z2 A GPU wins on memory bandwidth and fill-rate metrics. Its 128-bit memory bus delivers 102.4 GB/s of bandwidth, exactly double the 51.20 GB/s of the Z1, which uses a 64-bit bus. The Z2 A also has double the texture units and render output units, with 32 TMUs and 16 ROPs versus 16 TMUs and 8 ROPs on the Z1. Pixel rate of 25.60 GPixel/s and texture rate of 51.20 GTexel/s are both higher than the Z1's 20.00 GPixel/s and 40.00 GTexel/s. Additionally, the Z2 A doubles the shading units and ray tracing cores, with 512 shading units and 8 RT cores versus 256 shading units and 4 RT cores on the Z1. The Z2 A also draws only 15 W, making it the more efficient part in terms of power consumption, and it includes a single USB Type-C display output, whereas the Z1 has no display outputs.

Both parts share the same memory size and type at 16 GB of LPDDR5, and both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Z1 was released on 2023-09-17, while the Z2 A carries a release date of 2024-12-31. The Z1 has a launch MSRP of 599 USD; the Z2 A has no recorded launch MSRP.

Architecture Differences

The two GPUs come from different generations of AMD graphics architecture. The Ryzen Z1 GPU uses the RDNA 3.0 architecture on the Phoenix chip, built on a 4 nm process at TSMC. The Ryzen Z2 A GPU uses the older RDNA 2.0 architecture on the Van Gogh chip, built on a 7 nm process, also at TSMC. The node difference is substantial: 4 nm versus 7 nm, which explains the transistor density gap. The Z1 packs 25,390 million transistors into a 178 mm² die, yielding 142.6 million transistors per square millimeter. The Z2 A has only 2,400 million transistors on a 163 mm² die, for a density of 14.7 million per square millimeter. Despite the smaller transistor count, the Z2 A die is only 15 mm² smaller than the Z1 die.

The memory subsystems differ in bus width. The Z1 uses a 64-bit interface, while the Z2 A uses a 128-bit interface. Both operate the memory at 800 MHz with 6.4 Gbps effective data rate, but the wider bus gives the Z2 A twice the bandwidth. The Z1 has 256 shading units, 16 texture mapping units, 8 render output units, and 4 ray tracing cores. The Z2 A doubles all of those counts: 512 shading units, 32 TMUs, 16 ROPs, and 8 RT cores. Neither GPU includes tensor cores.

Clock behavior also splits the two designs. The Z1 operates at a 1500 MHz base clock and boosts to 2500 MHz, while the Z2 A runs at 1000 MHz base and 1600 MHz boost. The Z1's higher clocks and newer architecture allow it to reach 2.560 TFLOPS FP32 despite having half the shading units of the Z2 A. The Z2 A, with more shading units but lower clocks and older architecture, delivers only 1.638 TFLOPS FP32.

Power envelopes differ by a factor of two. The Z1 is rated at 30 W TDP with no power connectors, while the Z2 A is rated at 15 W TDP. The Z1 has recorded physical dimensions of 280 mm in length, 111 mm in height, and 21 mm in width; the Z2 A has no dimensions recorded. The Z1 lists no display outputs, while the Z2 A lists a single USB Type-C output.

FAQ

Q: Which GPU has higher raw compute performance?

A: The Ryzen Z1 GPU. It records 2.560 TFLOPS FP32 and 5.120 TFLOPS FP16, versus 1.638 TFLOPS FP32 and 3.277 TFLOPS FP16 for the Ryzen Z2 A GPU.

Q: Which GPU offers more memory bandwidth?

A: The Ryzen Z2 A GPU. Its 128-bit bus delivers 102.4 GB/s, exactly double the 51.20 GB/s of the Ryzen Z1 GPU, which uses a 64-bit bus.

Q: Do the two GPUs use the same architecture?

A: No. The Ryzen Z1 GPU uses RDNA 3.0 on the Phoenix chip, while the Ryzen Z2 A GPU uses RDNA 2.0 on the Van Gogh chip.

Q: How do the power requirements compare?

A: The Ryzen Z1 GPU is rated at 30 W TDP, while the Ryzen Z2 A GPU is rated at 15 W TDP. The Z1 has no power connectors, and the Z2 A has no connector data recorded.

Q: Are there differences in display outputs?

A: Yes. The Ryzen Z1 GPU has no display outputs, while the Ryzen Z2 A GPU includes 1x USB Type-C.

Q: Do both GPUs support the same APIs?

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

Specification Differences

| Specification | AMD Ryzen Z1 GPU | AMD Ryzen Z2 A GPU |

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

| Chip | Phoenix | Van Gogh |

| Architecture | RDNA 3.0 | RDNA 2.0 |

| Process Node | 4 nm | 7 nm |

| Transistors | 25,390 million | 2,400 million |

| Die Size | 178 mm² | 163 mm² |

| Transistor Density | 142.6M / mm² | 14.7M / mm² |

| Base Clock | 1500 MHz | 1000 MHz |

| Boost Clock | 2500 MHz | 1600 MHz |

| Memory Bus Width | 64 bit | 128 bit |

| Memory Bandwidth | 51.20 GB/s | 102.4 GB/s |

| Shading Units | 256 | 512 |

| TMUs | 16 | 32 |

| ROPs | 8 | 16 |

| RT Cores | 4 | 8 |

| Pixel Rate | 20.00 GPixel/s | 25.60 GPixel/s |

| Texture Rate | 40.00 GTexel/s | 51.20 GTexel/s |

| FP32 | 2.560 TFLOPS | 1.638 TFLOPS |

| FP16 | 5.120 TFLOPS (2:1) | 3.277 TFLOPS (2:1) |

| TDP | 30 W | 15 W |

| Display Outputs | No outputs | 1x USB Type-C |

| Release Date | 2023-09-17 | 2024-12-31 |

| Launch MSRP | 599 USD | None recorded |

| Dimensions | 280 mm / 111 mm / 21 mm | None recorded |

Both GPUs share the same memory size of 16 GB LPDDR5, the same memory clock of 800 MHz with 6.4 Gbps effective, the same API support, and identical production status of Active. Neither includes tensor cores. The Z1 has a launch MSRP of 599 USD, while the Z2 A has no recorded launch MSRP. Both parts sit at the 50th percentile in the database, with no benchmark scores recorded for either.