AMD Radeon RX 7900M vs AMD Ryzen Z2 Go GPU Comparison

Where Each One Wins

The recorded data splits these two AMD parts into completely different performance classes. The Radeon RX 7900M sits in the 94th percentile of all GPUs in the database, while the Ryzen Z2 Go GPU lands at the 50th percentile. That percentile gap is the first clear signal: the RX 7900M is a high-end mobile graphics solution, whereas the Z2 Go GPU is a mainstream integrated-class part.

The RX 7900M delivers benchmark scores that place it alongside professional workstation cards. Its average benchmark score of 97,487 puts it within 0.4% of the AMD Radeon Pro VII, 4.3% behind the NVIDIA Quadro RTX 6000, 5.4% ahead of the AMD Radeon Instinct MI60, and 6.3% ahead of the NVIDIA RTX A4500. These are the nearest rivals recorded in the database, and they are all pro-oriented or compute-oriented GPUs. The RX 7900M wins in scenarios that demand raw throughput, high memory bandwidth, and heavy shading work.

The Ryzen Z2 Go GPU has no recorded benchmark scores and no nearest rivals in the database. Its 50th percentile ranking and zero average score indicate that it is not positioned for high-end rendering tasks. The data shows no wins for either part in head-to-head testing, because no head-to-head benchmarks exist in the records. What the database does show is a massive gap in raw compute specifications, which translates into a clear division of use cases.

For gaming at high resolutions, heavy ray tracing workloads, or any task that stresses memory bandwidth and pixel throughput, the RX 7900M is the only one of the two with the resources to cope. The Z2 Go GPU, with its low power envelope and modest compute rates, fits scenarios where power efficiency and compact integration matter more than peak performance. The data does not support using the Z2 Go GPU for demanding 3D work; it supports using it where the RX 7900M cannot physically fit or operate.

Architecture Differences

The two GPUs come from different RDNA generations. The RX 7900M uses RDNA 3.0 with the Navi 31 chip, codenamed Plum Bonito, part of the Navi Mobile (RX 7000M) generation. The Ryzen Z2 Go GPU uses RDNA 2.0 with the Rembrandt+ chip and is classified as a Console GPU (AMD) generation part. That generation split explains much of the performance difference.

The manufacturing process differs as well. The RX 7900M is built on a 5 nm process at TSMC, while the Z2 Go GPU uses a 6 nm process, also at TSMC. The RX 7900M packs 57,700 million transistors into a 529 mm² die, giving a transistor density of 109.1 million transistors per square millimeter. The Z2 Go GPU contains 13,100 million transistors on a 208 mm² die, with a density of 63.0 million per square millimeter. The RX 7900M has more than four times the transistor count and more than double the die area.

Compute resources differ by an even wider margin. The RX 7900M has 4,608 shading units, 288 texture mapping units, 192 render output units, and 72 ray tracing cores. The Z2 Go GPU has 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores. That is a 6:1 ratio in shading units and RT cores, and a 6:1 ratio in TMUs. The RX 7900M also has a 256-bit memory bus versus the Z2 Go GPU's 128-bit bus, and uses GDDR6 memory instead of LPDDR5.

The API support is identical on paper: both list DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7900M connects via PCIe 4.0 x16, while the Z2 Go GPU has no bus interface recorded. The RX 7900M is listed as an IGP with no power connectors and portable-device-dependent display outputs. The Z2 Go GPU lists a single USB Type-C display output.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between these two GPUs. The wins count is zero for both sides. That absence is itself informative: the performance gap is so large that the database does not record them as comparable products.

The closest available comparison comes from the RX 7900M's individual benchmark scores. In 3DMark Steel Nomad DX12, it scores 4,201. In Geekbench OpenCL, it scores 129,499. In Geekbench Vulkan, it scores 158,760. These are the only recorded benchmark results for either product, and they all belong to the RX 7900M. The Z2 Go GPU has an empty benchmark array, which means the database has no measured performance data for it at all.

The RX 7900M's average benchmark score of 97,487 places it in the 94th percentile. Its nearest rival, the AMD Radeon Pro VII, scores 97,131 on average, a delta of 0.4%. The NVIDIA Quadro RTX 6000 scores 101,872, which is 4.3% higher. The AMD Radeon Instinct MI60 scores 92,466, which is 5.4% lower. The NVIDIA RTX A4500 scores 91,671, which is 6.3% lower. These deltas show that the RX 7900M competes directly with professional workstation GPUs, not with console-class integrated parts.

The raw compute figures reinforce this. The RX 7900M delivers 38.52 TFLOPS of FP32 performance and 77.05 TFLOPS of FP16 (2:1). The Z2 Go GPU delivers 4.147 TFLOPS of FP32 and 8.294 TFLOPS of FP16. The RX 7900M is roughly 9.3 times faster in FP32 and FP16 compute. Pixel rate tells the same story: 401.3 GPixel/s for the RX 7900M versus 86.40 GPixel/s for the Z2 Go GPU. Texture rate is 601.9 GTexel/s versus 129.6 GTexel/s.

Specification Differences

The two products differ in nearly every measurable specification. The RX 7900M uses the Navi 31 chip on RDNA 3.0, while the Z2 Go GPU uses Rembrandt+ on RDNA 2.0. The process node is 5 nm for the RX 7900M and 6 nm for the Z2 Go GPU. Transistor count is 57,700 million versus 13,100 million. Die size is 529 mm² versus 208 mm². Transistor density is 109.1 million per mm² versus 63.0 million per mm².

Clock speeds differ substantially. The RX 7900M has a base clock of 1825 MHz and a boost clock of 2090 MHz. The Z2 Go GPU has a base clock of 800 MHz and a boost clock of 2700 MHz. The Z2 Go GPU boosts higher, but with far fewer cores. Memory clocks also differ: the RX 7900M runs at 2250 MHz with 18 Gbps effective, while the Z2 Go GPU runs at 800 MHz with 6.4 Gbps effective.

Memory configuration is another major split. The RX 7900M uses 16 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s of bandwidth. The Z2 Go GPU uses 16 GB of LPDDR5 on a 128-bit bus, delivering 102.4 GB/s of bandwidth. Same capacity, but the RX 7900M has 5.6 times the memory bandwidth.

Compute resources: the RX 7900M has 4,608 shading units, 288 TMUs, 192 ROPs, and 72 RT cores. The Z2 Go GPU has 768 shading units, 48 TMUs, 32 ROPs, and 12 RT cores. Power draw is 180 W for the RX 7900M and 28 W for the Z2 Go GPU. The RX 7900M lists PCIe 4.0 x16, the Z2 Go GPU lists no bus interface. Display outputs are portable-device-dependent for the RX 7900M and a single USB Type-C for the Z2 Go GPU.

Release dates differ by over a year. The RX 7900M released on 2023-10-18, while the Z2 Go GPU released on 2024-12-31. Both are listed as Active in production status. The RX 7900M has a predecessor listed as Polaris Mobile and no successor. The Z2 Go GPU has neither predecessor nor successor recorded.

FAQ

Q: Which GPU has higher raw compute performance?

A: The RX 7900M delivers 38.52 TFLOPS FP32 and 77.05 TFLOPS FP16, versus 4.147 TFLOPS FP32 and 8.294 TFLOPS FP16 for the Z2 Go GPU.

Q: How do their memory bandwidths compare?

A: The RX 7900M provides 576.0 GB/s over a 256-bit GDDR6 bus. The Z2 Go GPU provides 102.4 GB/s over a 128-bit LPDDR5 bus. That is a 5.6 times difference in favor of the RX 7900M.

Q: Do they use the same architecture?

A: No. The RX 7900M uses RDNA 3.0 with the Navi 31 chip. The Z2 Go GPU uses RDNA 2.0 with the Rembrandt+ chip.

Q: Which GPU has more ray tracing cores?

A: The RX 7900M has 72 ray tracing cores. The Z2 Go GPU has 12. The RX 7900M has six times as many.

Q: What is the power draw of each?

A: The RX 7900M is rated at 180 W. The Z2 Go GPU is rated at 28 W. Neither requires external power connectors, and the RX 7900M is listed as an IGP.

Q: Are there any recorded head-to-head benchmark results?

A: No. The database contains no head-to-head benchmarks between these two products. The RX 7900M has individual scores in 3DMark Steel Nomad DX12, Geekbench OpenCL, and Geekbench Vulkan. The Z2 Go GPU has no recorded benchmark scores.

The Verdict

The data points to a simple conclusion: these are not competing products. The RX 7900M belongs in the 94th percentile of all GPUs, with an average benchmark score of 97,487 and nearest rivals that include the NVIDIA Quadro RTX 6000 and AMD Radeon Pro VII. The Z2 Go GPU sits at the 50th percentile with no recorded benchmarks and no nearest rivals. Anyone choosing between them for gaming or rendering workloads should take the RX 7900M based on the recorded compute, memory, and benchmark data alone.

The RX 7900M wins on every performance-relevant specification. It has 6 times the shading units, 6 times the TMUs, 6 times the ROPs, 6 times the RT cores, and roughly 9.3 times the FP32 throughput. Its memory bandwidth advantage is 5.6 times. Its pixel rate is 4.6 times higher. Its texture rate is 4.6 times higher. The only category where the Z2 Go GPU leads is power consumption: 28 W versus 180 W, and a higher boost clock of 2700 MHz versus 2090 MHz, though that higher clock runs on a fraction of the compute resources.

The Z2 Go GPU makes sense for a low-power, compact system where the 180 W RX 7900M cannot operate. The 28 W power draw, single USB Type-C output, and smaller 208 mm² die point to an integrated, portable application. The RX 7900M, with its 529 mm² die, 57,700 million transistors, and 576.0 GB/s bandwidth, is built for sustained high-end graphics work.

The database records no scenario where the Z2 Go GPU outperforms the RX 7900M. The wins count is 0 for both, but the specification gap and the RX 7900M's measurable benchmark results settle the matter. The RX 7900M is the choice for performance. The Z2 Go GPU is the choice for minimal power draw and integration. There is no middle ground in the recorded data.