AMD Ryzen Z2 Go GPU vs NVIDIA GeForce RTX 5090 Mobile Comparison

AMD Ryzen Z2 Go GPU vs NVIDIA GeForce RTX 5090 Mobile

The database places these two GPUs at opposite ends of the mobile graphics spectrum. The AMD Ryzen Z2 Go GPU is a low-power console-class part with a 50th percentile ranking, while the NVIDIA GeForce RTX 5090 Mobile is a flagship mobile solution sitting at the 84th percentile. The recorded benchmark data shows the NVIDIA part delivering an average score of 45,152 points, whereas the AMD part has no recorded benchmark scores in the database. This creates a clear performance hierarchy, but the AMD chip's role is distinct based on its power envelope and feature set.

Where Each One Wins

The AMD Ryzen Z2 Go GPU wins in scenarios emphasizing power efficiency and minimal physical footprint. Its thermal design power is 28 W, compared to the NVIDIA part's 95 W. This makes the AMD chip suitable for fanless or passively cooled designs, thin handhelds, or embedded console-style systems. It draws power through no external connectors, and its display output is a single USB Type-C port, indicating a compact integration path. The AMD part also uses 16 GB of LPDDR5 memory, which is unified with the system and operates at a modest 102.4 GB/s of bandwidth. This configuration favors workloads where memory capacity matters more than raw throughput, such as running larger datasets or textures within a constrained power budget.

The NVIDIA GeForce RTX 5090 Mobile wins in every performance-heavy category. Its 24 GB of GDDR7 memory on a 256-bit bus delivers 896.0 GB/s of bandwidth, which is 8.75 times the AMD part's bandwidth. The NVIDIA chip has 10,496 shading units versus 768, and its FP32 throughput is 31.80 TFLOPS against the AMD's 4.147 TFLOPS. Benchmark results confirm this dominance: the PassMark G3D score is 30,034, and the Geekbench OpenCL score is 201,834. The NVIDIA part also has dedicated tensor cores (328) and more ray tracing cores (82 versus 12), making it the clear winner for AI-accelerated workloads, ray-traced rendering, and high-refresh-rate gaming. The 3DMark Steel Nomad DX12 score of 5,871 further reinforces its lead in modern DirectX 12 titles.

Architecture Differences

The two chips come from different architectural generations. The AMD Ryzen Z2 Go GPU uses RDNA 2.0 architecture on a 6 nm TSMC process, with the chip named "Rembrandt+". It integrates 13,100 million transistors on a 208 mm² die, yielding a transistor density of 63.0 million per square millimeter. The NVIDIA GeForce RTX 5090 Mobile uses Blackwell 2.0 architecture on a 5 nm TSMC process, with the GB203 chip. It packs 45,600 million transistors on a 378 mm² die, achieving a transistor density of 120.6 million per square millimeter. The NVIDIA chip has nearly 3.5 times the transistor count and a density that is roughly 1.9 times higher.

The memory subsystems differ fundamentally. AMD uses LPDDR5 system memory, which is shared with the CPU and runs at an effective 6.4 Gbps. NVIDIA uses dedicated GDDR7 memory running at an effective 28 Gbps. The NVIDIA part also has a PCIe 5.0 x16 bus interface, whereas the AMD part lists no bus interface, suggesting a system-on-chip integration rather than a discrete add-in card. The NVIDIA chip is classified as an IGP (integrated graphics processor) in slot width, but it has a much higher power allocation. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API feature parity exists at the software level.

The AMD part's FP16 throughput is 8.294 TFLOPS with a 2:1 ratio, meaning it runs half-precision at double the FP32 rate. The NVIDIA part runs FP16 at 31.80 TFLOPS with a 1:1 ratio, matching its FP32 rate. This indicates the NVIDIA chip is designed for compute-heavy tasks where FP16 acceleration is critical, while the AMD chip's ratio suggests a more graphics-oriented design with limited compute focus.

FAQ

Q: Which GPU has a higher average benchmark score in the database?

A: The NVIDIA GeForce RTX 5090 Mobile has an average benchmark score of 45,152, while the AMD Ryzen Z2 Go GPU has no recorded benchmark scores, leaving its average at zero.

Q: How do the memory bandwidth figures compare?

A: The NVIDIA part delivers 896.0 GB/s from 24 GB of GDDR7 on a 256-bit bus. The AMD part delivers 102.4 GB/s from 16 GB of LPDDR5 on a 128-bit bus. The NVIDIA bandwidth is 8.75 times higher.

Q: What is the power draw difference?

A: The AMD Ryzen Z2 Go GPU has a thermal design power of 28 W, while the NVIDIA GeForce RTX 5090 Mobile has a thermal design power of 95 W. Both use no external power connectors.

Q: Which GPU has more ray tracing cores?

A: The NVIDIA GeForce RTX 5090 Mobile has 82 ray tracing cores, while the AMD Ryzen Z2 Go GPU has 12. The NVIDIA part also has 328 tensor cores, which the AMD part lacks entirely.

Q: Are there any architectural similarities?

A: Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both are manufactured by TSMC, but on different process nodes: 6 nm for AMD and 5 nm for NVIDIA.

Q: What is the release date difference?

A: The AMD Ryzen Z2 Go GPU was released on December 31, 2024. The NVIDIA GeForce RTX 5090 Mobile was released on March 26, 2025, making it roughly three months newer.

Specification Differences

The two GPUs differ in nearly every measurable specification. The process node is 6 nm for AMD and 5 nm for NVIDIA. Transistor count is 13,100 million versus 45,600 million, and die size is 208 mm² versus 378 mm². Transistor density is 63.0 million per square millimeter versus 120.6 million. Base clock is 800 MHz versus 990 MHz, and boost clock is 2700 MHz versus 1515 MHz. Memory clock is 800 MHz (6.4 Gbps effective) versus 1750 MHz (28 Gbps effective).

Memory size is 16 GB versus 24 GB, type is LPDDR5 versus GDDR7, bus width is 128 bit versus 256 bit, and bandwidth is 102.4 GB/s versus 896.0 GB/s. Shading units are 768 versus 10,496, texture mapping units are 48 versus 328, and raster output units are 32 versus 112. Ray tracing cores are 12 versus 82, and tensor cores are absent versus 328. Pixel rate is 86.40 GPixel/s versus 169.7 GPixel/s, and texture rate is 129.6 GTexel/s versus 496.9 GTexel/s.

FP32 performance is 4.147 TFLOPS versus 31.80 TFLOPS, and FP16 performance is 8.294 TFLOPS (2:1) versus 31.80 TFLOPS (1:1). Thermal design power is 28 W versus 95 W. The bus interface is absent for AMD versus PCIe 5.0 x16 for NVIDIA. Display outputs are 1x USB Type-C versus Portable Device Dependent. The NVIDIA part lists a predecessor, GeForce 40 Mobile, while the AMD part has no predecessor or successor.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between these two GPUs, as the winsA and winsB fields are both zero. The only recorded benchmarks belong to the NVIDIA GeForce RTX 5090 Mobile. Its 3DMark Steel Nomad DX12 score is 5,871, which indicates strong performance in modern DirectX 12 workloads. The PassMark G3D score of 30,034 places it well above the 84th percentile of all GPUs. Its Geekbench OpenCL score of 201,834 and Vulkan score of 198,405 show near-parity between the two compute APIs, suggesting balanced driver optimization.

The NVIDIA part's PassMark sub-tests show a spread across DirectX versions: DirectX 9 scores 324, DirectX 10 scores 183, DirectX 11 scores 269, and DirectX 12 scores 138. This pattern indicates the chip is optimized for modern APIs, with older DirectX versions yielding lower scores. The PassMark G2D score of 1,057 and GPU compute score of 13,401 round out the profile. The nearest rivals for the NVIDIA part are the AMD Radeon Pro 5500 XT with an average score of 45,384 (0.5% ahead), the NVIDIA GeForce RTX 4070 Ti with 44,795 (0.8% behind), the Intel Arc A730M with 45,592 (1% ahead), and the NVIDIA RTX 5880 Ada Generation with 45,972 (1.8% ahead). This tight cluster indicates the RTX 5090 Mobile sits within a narrow performance band around 45,000 points.

The AMD Ryzen Z2 Go GPU has no benchmark scores, so no head-to-head numerical comparison is possible. Its 50th percentile ranking, however, places it at the median of all GPUs in the database, suggesting it is neither a low-end nor a high-end part. Its performance class is likely constrained by the 28 W power envelope, but the database does not provide direct evidence to quantify that.

The Verdict

The data presents a clear division of roles. The NVIDIA GeForce RTX 5090 Mobile is the performance leader, with 31.80 TFLOPS of FP32 compute, 82 ray tracing cores, 328 tensor cores, and 896.0 GB/s of memory bandwidth. Its 84th percentile ranking and average score of 45,152 confirm its position among the top tier of mobile GPUs, close to desktop-class parts like the RTX 4070 Ti and the RTX 5880 Ada Generation. It is suited for heavy gaming, content creation, and AI workloads, as evidenced by its high compute and API-specific benchmark scores.

The AMD Ryzen Z2 Go GPU serves a different purpose. Its 28 W power draw, 6 nm process, and 16 GB of LPDDR5 memory make it suitable for compact, power-constrained devices. Its 50th percentile ranking indicates mid-pack performance, but the absence of benchmark scores means the database cannot confirm its real-world speed. The 12 ray tracing cores and 768 shading units suggest it can handle basic graphics tasks, but it lacks the tensor cores and raw throughput for demanding compute or ray-traced workloads.

Who should pick which depends on the use case. For a portable device prioritizing battery life and minimal cooling, the AMD Ryzen Z2 Go GPU is the logical choice. For a laptop requiring maximum frame rates, ray tracing, and AI acceleration, the NVIDIA GeForce RTX 5090 Mobile is the only option. The 95 W power draw of the NVIDIA part implies a larger chassis with robust cooling, while the AMD part's 28 W envelope allows for thinner designs. The database supports this split: one part wins on efficiency and integration, the other wins on every performance metric recorded.