AMD Ryzen Z2 Go GPU vs NVIDIA GeForce RTX 4090 Mobile Comparison

FAQ

Q: What is the core architectural difference between the AMD Ryzen Z2 Go GPU and the NVIDIA GeForce RTX 4090 Mobile?

A: The AMD Ryzen Z2 Go GPU uses the RDNA 2.0 architecture on a 6 nm TSMC process, while the NVIDIA GeForce RTX 4090 Mobile uses the Ada Lovelace architecture on a 5 nm TSMC process.

Q: Which GPU has a higher transistor count and die size?

A: The NVIDIA GeForce RTX 4090 Mobile has 45,900 million transistors on a 379 mm² die, compared to the AMD Ryzen Z2 Go GPU's 13,100 million transistors on a 208 mm² die.

Q: How much memory bandwidth does each GPU provide?

A: The AMD Ryzen Z2 Go GPU provides 102.4 GB/s over a 128-bit bus with LPDDR5 memory, while the NVIDIA GeForce RTX 4090 Mobile provides 576.0 GB/s over a 256-bit bus with GDDR6 memory.

Q: What is the TDP of each GPU?

A: The AMD Ryzen Z2 Go GPU has a TDP of 28 W, whereas the NVIDIA GeForce RTX 4090 Mobile has a TDP of 120 W.

Q: Which GPU scores higher in the database's average benchmark score?

A: The NVIDIA GeForce RTX 4090 Mobile has an average benchmark score of 43667 and a percentile rank of 84, while the AMD Ryzen Z2 Go GPU has no recorded benchmarks and an average score of 0, with a percentile rank of 50.

Q: What is the pixel rate difference between the two GPUs?

A: The NVIDIA GeForce RTX 4090 Mobile delivers 189.8 GPixel/s, over twice the 86.40 GPixel/s of the AMD Ryzen Z2 Go GPU.

Architecture Differences

The AMD Ryzen Z2 Go GPU and the NVIDIA GeForce RTX 4090 Mobile represent two distinct design approaches. The AMD part is built on the RDNA 2.0 architecture, fabricated by TSMC on a 6 nm process. The NVIDIA part uses the Ada Lovelace architecture, also from TSMC, but on a 5 nm node. This process difference contributes to a large gap in transistor density, with the NVIDIA chip reaching 121.1M transistors per mm² versus 63.0M per mm² for the AMD chip.

The NVIDIA GeForce RTX 4090 Mobile is a much larger chip overall. It packs 45,900 million transistors into a 379 mm² die, whereas the AMD Ryzen Z2 Go GPU contains 13,100 million transistors on a 208 mm² die. The NVIDIA part also integrates a much larger execution resource pool: 9,728 shading units, 304 texture mapping units, and 112 raster operation units. The AMD part has 768 shading units, 48 TMUs, and 32 ROPs.

Ray tracing hardware differs as well. The NVIDIA GeForce RTX 4090 Mobile includes 76 RT cores and 304 tensor cores. The AMD Ryzen Z2 Go GPU includes 12 RT cores and no tensor cores. The memory subsystems are configured differently: the AMD GPU uses 16 GB of LPDDR5 on a 128-bit bus, while the NVIDIA GPU uses 16 GB of GDDR6 on a 256-bit bus. The NVIDIA memory clock runs at 2250 MHz with 18 Gbps effective speed, versus 800 MHz with 6.4 Gbps effective for the AMD part.

The power envelopes are far apart. The AMD Ryzen Z2 Go GPU has a TDP of 28 W, while the NVIDIA GeForce RTX 4090 Mobile has a TDP of 120 W. The NVIDIA part is listed as an IGP with PCIe 4.0 x16 bus interface, while the AMD part lists no slot width and no bus interface. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD display output is a single USB Type-C, whereas the NVIDIA display output is portable device dependent.

The release timing differs by two years. The NVIDIA GeForce RTX 4090 Mobile launched on January 3, 2023, with a predecessor in GeForce 30 Mobile and a successor in GeForce 50 Mobile. The AMD Ryzen Z2 Go GPU was released on January 1, 2025, with no predecessor or successor listed.

The Verdict

The recorded data shows a decisive performance gap. The NVIDIA GeForce RTX 4090 Mobile holds a percentile rank of 84 across all GPUs in the database, while the AMD Ryzen Z2 Go GPU sits at the 50th percentile with no benchmark scores recorded. The NVIDIA part delivers 32.98 TFLOPS of FP32 compute, 189.8 GPixel/s pixel rate, and 515.3 GTexel/s texture rate. The AMD part delivers 4.147 TFLOPS FP32, 86.40 GPixel/s, and 129.6 GTexel/s.

The NVIDIA GeForce RTX 4090 Mobile is the clear choice for any workload that demands raw graphics throughput, ray tracing capacity, or compute performance. Its 304 tensor cores and 76 RT cores give it dedicated hardware for AI-accelerated tasks and ray-traced rendering that the AMD part cannot match, since the AMD GPU has no tensor cores and only 12 RT cores.

The AMD Ryzen Z2 Go GPU is the option for constrained power environments. Its 28 W TDP is less than a quarter of the NVIDIA part's 120 W TDP. For systems where power delivery and thermal capacity are limited, the AMD part offers a functional RDNA 2.0 feature set with DirectX 12 Ultimate support and 16 GB of memory.

The database shows no benchmark wins for the AMD part, as it has no recorded test scores. The NVIDIA part has wins across all nine recorded benchmark tests, including Geekbench OpenCL at 180,831, Geekbench Vulkan at 170,774, and Passmark G3D at 27,212.

Specification Differences

| Specification | AMD Ryzen Z2 Go GPU | NVIDIA GeForce RTX 4090 Mobile |

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

| Architecture | RDNA 2.0 | Ada Lovelace |

| Process Node | 6 nm | 5 nm |

| Transistors | 13,100 million | 45,900 million |

| Die Size | 208 mm² | 379 mm² |

| Transistor Density | 63.0M / mm² | 121.1M / mm² |

| Base Clock | 800 MHz | 1335 MHz |

| Boost Clock | 2700 MHz | 1695 MHz |

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

| Memory Type | LPDDR5 | GDDR6 |

| Memory Bus Width | 128 bit | 256 bit |

| Memory Bandwidth | 102.4 GB/s | 576.0 GB/s |

| Shading Units | 768 | 9728 |

| TMUs | 48 | 304 |

| ROPs | 32 | 112 |

| RT Cores | 12 | 76 |

| Tensor Cores | None | 304 |

| Pixel Rate | 86.40 GPixel/s | 189.8 GPixel/s |

| Texture Rate | 129.6 GTexel/s | 515.3 GTexel/s |

| FP32 | 4.147 TFLOPS | 32.98 TFLOPS |

| FP16 | 8.294 TFLOPS (2:1) | 32.98 TFLOPS (1:1) |

| TDP | 28 W | 120 W |

| Bus Interface | Not listed | PCIe 4.0 x16 |

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

| Release Date | 2025-01-01 | 2023-01-03 |

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark comparisons between the two GPUs, because the AMD Ryzen Z2 Go GPU has an empty benchmark array. The NVIDIA GeForce RTX 4090 Mobile, however, has nine recorded test scores, and each one establishes a performance baseline that the AMD part cannot currently match.

The largest recorded win for the NVIDIA part is in Geekbench OpenCL, where it scores 180,831. The Geekbench Vulkan score is 170,774. In Passmark G3D, the NVIDIA part scores 27,212, which is a strong indicator of general 3D rendering performance. The Passmark GPU Compute score is 12,347.

The older DirectX tests show consistent results: Passmark DirectX 9 scores 310, DirectX 11 scores 262, DirectX 10 scores 173, and DirectX 12 scores 107. The Passmark G2D score is 984.

The NVIDIA GeForce RTX 4090 Mobile's average benchmark score of 43,667 places it in the 84th percentile of all GPUs in the database. Its nearest rivals are the NVIDIA RTX A6000 at 44,075, which is 0.9% higher, and the NVIDIA Quadro M6000 at 43,301, which is 0.8% lower. The GeForce RTX 5050 Mobile scores 43,268, also 0.9% lower, and the Quadro M6000 24 GB scores 43,262, 0.9% lower. This clustering shows that the RTX 4090 Mobile sits right at the top of a tight performance band among high-end workstation and mobile parts.

Where Each One Wins

The NVIDIA GeForce RTX 4090 Mobile wins in every measurable performance category in the database. It has higher FP32 compute at 32.98 TFLOPS versus 4.147 TFLOPS. It has higher pixel throughput at 189.8 GPixel/s versus 86.40 GPixel/s. It has higher texture throughput at 515.3 GTexel/s versus 129.6 GTexel/s. Its memory bandwidth of 576.0 GB/s is more than five times the AMD part's 102.4 GB/s.

For ray tracing, the NVIDIA part has 76 RT cores and 304 tensor cores, enabling dedicated hardware acceleration for ray-traced effects and AI-based features. The AMD part has 12 RT cores and no tensor cores, limiting its capacity in those areas. The NVIDIA part also supports FP16 at a 1:1 ratio with 32.98 TFLOPS, while the AMD part reaches 8.294 TFLOPS at a 2:1 ratio.

The AMD Ryzen Z2 Go GPU wins in power efficiency. Its 28 W TDP is dramatically lower than the NVIDIA part's 120 W TDP. For compact or thermally constrained systems, this difference is decisive. The AMD part also has a higher boost clock at 2700 MHz versus 1695 MHz for the NVIDIA part, which reflects its lower-power design scaling rather than a raw performance advantage.

The AMD part also wins on release recency, launching on 2025-01-01, two years after the NVIDIA part's 2023-01-03 release. The NVIDIA part lists a successor, the GeForce 50 Mobile, while the AMD part has no listed successor.

The database indicates that for high-end gaming, content creation, or compute workloads where performance is the priority, the NVIDIA GeForce RTX 4090 Mobile is the applicable choice. For low-power embedded or portable designs where the 28 W TDP and single USB Type-C output fit the system constraints, the AMD Ryzen Z2 Go GPU is the applicable choice. The data does not support any scenario where the AMD part outperforms the NVIDIA part in raw benchmark scores, because no AMD benchmark scores are recorded.