AMD Radeon RX 7800M vs AMD Ryzen Z2 A GPU Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the AMD Radeon RX 7800M and the AMD Ryzen Z2 A GPU. The RX 7800M has a substantial set of measured scores, while the Z2 A GPU has no entries in the benchmark database. This absence of comparative data means the analysis must rely on the available scores for the RX 7800M and the architectural parameters of both parts.

The RX 7800M posts an average benchmark score of 27,883 across all recorded tests. This places it at the 73rd percentile among all GPUs in the database. The nearest rivals bracket this score tightly. The AMD Radeon Pro Vega 20 sits 0.2% ahead with an average score of 27,839, while the AMD Radeon Pro W5500X trails by 0.3% with 27,973. The NVIDIA GeForce GTX 980 Ti is 0.5% higher at 28,020, and the AMD FirePro S7150 leads by 0.8% with 28,117. These deltas are all within a single percentage point, indicating the RX 7800M clusters tightly with a group of mid-to-high-end desktop and workstation parts.

In specific tests, the RX 7800M delivers its strongest showing in Geekbench Vulkan, scoring 126,668, with Geekbench OpenCL close behind at 120,778. The 3DMark Steel Nomad DX12 result comes in at 2,994. Passmark scores show a peak in the G3D category at 17,613, with GPU compute at 9,342. DirectX 11 and DirectX 9 results are 176 and 174 respectively, while DirectX 10 sits at 99 and DirectX 12 at 89. The G2D score is 892.

The Z2 A GPU has no benchmark scores recorded, so there is no measured baseline for comparison. The percentile field for the Z2 A GPU lists 50, but with an average score of zero and no rival data, this figure cannot be validated against actual test results. The RX 7800M, by contrast, has a verified percentile of 73 with a full suite of scores.

What the data indicates is a large gulf in raw compute capability. The RX 7800M reaches 35.87 TFLOPS FP32, while the Z2 A GPU delivers 1.638 TFLOPS FP32. That is a difference of roughly 22x on paper. The RX 7800M also holds a 21.9x advantage in texture fill rate (560.4 GTexel/s versus 51.20 GTexel/s) and an 8.8x lead in pixel rate (224.2 GPixel/s versus 25.60 GPixel/s). These figures are not benchmark scores, but they align with the absence of any competitive overlap in the recorded measurements.

Architecture Differences

The two GPUs come from different points in AMD's roadmap. The RX 7800M uses the Navi 32 chip built on RDNA 3.0 architecture, with the codename "Wheat Nas" and belongs to the Navi Mobile (RX 7000M) generation. The Z2 A GPU uses the Van Gogh chip on RDNA 2.0 architecture, classified under the Console GPU (AMD) generation.

Process technology differs significantly. The RX 7800M is fabricated on a 5 nm process at TSMC, while the Z2 A GPU uses a 7 nm process, also at TSMC. Transistor counts reflect this gap: the RX 7800M packs 28,100 million transistors on a 346 mm² die, giving a transistor density of 81.2 million per square millimeter. The Z2 A GPU has 2,400 million transistors on a 163 mm² die, with a density of 14.7 million per square millimeter. The RX 7800M uses over 11 times more transistors on a die that is just over twice the size.

Core configurations are equally divergent. The RX 7800M has 3,840 shading units, 240 texture mapping units, 96 render output units, and 60 ray tracing cores. The Z2 A GPU has 512 shading units, 32 TMUs, 16 ROPs, and 8 ray tracing cores. That is a 7.5x difference in shading units, a 7.5x difference in TMUs, a 6x difference in ROPs, and a 7.5x difference in ray tracing cores.

Clock speeds show the RX 7800M operating at a base of 1295 MHz with a boost of 2335 MHz and a game clock of 2145 MHz. The Z2 A GPU runs at a 1000 MHz base and 1600 MHz boost, with no game clock listed. Memory clocks also differ: the RX 7800M uses 2250 MHz with 18 Gbps effective, while the Z2 A GPU runs at 800 MHz with 6.4 Gbps effective.

Memory architecture is a major differentiator. The RX 7800M has 12 GB of GDDR6 on a 192-bit bus, yielding 432.0 GB/s of bandwidth. The Z2 A GPU has 16 GB of LPDDR5 on a 128-bit bus, yielding 102.4 GB/s. The RX 7800M provides over 4x the memory bandwidth despite having less capacity.

Power targets underline the intended use cases. The RX 7800M has a 180 W TDP and is classified as an IGP with no power connectors, indicating it is designed for integration into a laptop or portable device board. The Z2 A GPU has a 15 W TDP, a much lower figure suited to ultra-portable or embedded designs. The Z2 A GPU lists a single USB Type-C display output, while the RX 7800M's display outputs are described as portable device dependent.

API support is identical on paper: both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7800M uses a PCIe 4.0 x16 bus interface, while the Z2 A GPU has no bus interface listed.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 7800M has an average benchmark score of 27,883 across its recorded tests. The AMD Ryzen Z2 A GPU has no benchmark scores recorded, with an average score of zero.

Q: How do the FP32 compute figures compare?

A: The RX 7800M delivers 35.87 TFLOPS FP32, while the Z2 A GPU delivers 1.638 TFLOPS FP32. The RX 7800M offers roughly 22 times the FP32 throughput.

Q: What are the memory configurations of each GPU?

A: The RX 7800M uses 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. The Z2 A GPU uses 16 GB of LPDDR5 on a 128-bit bus with 102.4 GB/s bandwidth.

Q: Which GPU has more ray tracing cores?

A: The RX 7800M has 60 ray tracing cores. The Z2 A GPU has 8 ray tracing cores, which is 7.5 times fewer.

Q: What process nodes are used?

A: The RX 7800M is built on a 5 nm process at TSMC. The Z2 A GPU is built on a 7 nm process at TSMC.

Q: Do both GPUs support the same graphics APIs?

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

The Verdict

The data separates these two GPUs into distinct categories with minimal overlap. The RX 7800M is a high-performance mobile part, evidenced by its 73rd percentile ranking, its 35.87 TFLOPS FP32 compute, and its 432.0 GB/s memory bandwidth. It sits alongside desktop-class rivals like the NVIDIA GeForce GTX 980 Ti, with a delta of -0.5% in average score. The 180 W TDP and IGP classification indicate it targets gaming laptops or high-end portable workstations where performance is the priority.

The Z2 A GPU is a low-power console or handheld part. Its 15 W TDP, 1.638 TFLOPS FP32 compute, and 102.4 GB/s bandwidth point to a design focused on efficiency and portability rather than raw throughput. The 16 GB LPDDR5 memory is notable for capacity, but the 128-bit bus limits bandwidth. With no benchmark scores recorded, the database cannot confirm its real-world performance, but the architectural figures place it well below the RX 7800M in every compute metric.

For users prioritizing frame rates and compute-heavy workloads, the RX 7800M is the clear choice based on the recorded data. For designs where power draw and thermal output are the constraints, the Z2 A GPU offers a much lower envelope. The two parts do not compete in the same performance class, and the benchmark data reflects that with the RX 7800M holding a verified score set and the Z2 A GPU having none.

Specification Differences

| Specification | AMD Radeon RX 7800M | AMD Ryzen Z2 A GPU |

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

| Chip | Navi 32 | Van Gogh |

| Architecture | RDNA 3.0 | RDNA 2.0 |

| Generation | Navi Mobile (RX 7000M) | Console GPU (AMD) |

| Process Node | 5 nm | 7 nm |

| Transistors | 28,100 million | 2,400 million |

| Die Size | 346 mm² | 163 mm² |

| Transistor Density | 81.2M / mm² | 14.7M / mm² |

| Base Clock | 1295 MHz | 1000 MHz |

| Boost Clock | 2335 MHz | 1600 MHz |

| Game Clock | 2145 MHz | N/A |

| Memory Clock | 2250 MHz, 18 Gbps effective | 800 MHz, 6.4 Gbps effective |

| Memory Size | 12 GB | 16 GB |

| Memory Type | GDDR6 | LPDDR5 |

| Memory Bus Width | 192 bit | 128 bit |

| Memory Bandwidth | 432.0 GB/s | 102.4 GB/s |

| Shading Units | 3840 | 512 |

| TMUs | 240 | 32 |

| ROPs | 96 | 16 |

| RT Cores | 60 | 8 |

| Pixel Rate | 224.2 GPixel/s | 25.60 GPixel/s |

| Texture Rate | 560.4 GTexel/s | 51.20 GTexel/s |

| FP32 | 35.87 TFLOPS | 1.638 TFLOPS |

| FP16 | 35.87 TFLOPS (1:1) | 3.277 TFLOPS (2:1) |

| TDP | 180 W | 15 W |

| Bus Interface | PCIe 4.0 x16 | N/A |

| Display Outputs | Portable Device Dependent | 1x USB Type-C |

| Release Date | 2024-09-10 | 2024-12-31 |