AMD Ryzen Z2 Go GPU vs NVIDIA GeForce RTX 5080 Mobile Comparison

The Verdict

The recorded data draws a stark performance separation between these two mobile graphics solutions. The AMD Ryzen Z2 Go GPU is a low-power console-class part with a 28 W TDP, built on an older 6 nm process with RDNA 2.0 architecture. The NVIDIA GeForce RTX 5080 Mobile is a high-end Blackwell 2.0 part with an 80 W TDP, a 5 nm process, and a far larger silicon footprint. Benchmark results indicate the RTX 5080 Mobile is the dominant part for any graphics-intensive workload, while the Ryzen Z2 Go GPU serves a fundamentally different role as an integrated-class solution for compact, low-power devices.

The RTX 5080 Mobile sits at the 81st percentile of all GPUs in the database, with an average benchmark score of 38,349. It outperforms its nearest rivals by narrow margins: it is 0.1% ahead of the GeForce MX570, 0.6% ahead of the RTX 4080 Mobile, and 0.9% ahead of both the MX570 A and the Radeon Pro 580X. The Ryzen Z2 Go GPU has no recorded benchmark scores and sits at the 50th percentile, which indicates it has no measurable competitive standing in the database. The verdict is straightforward: the RTX 5080 Mobile is for demanding gaming and compute workloads, while the Ryzen Z2 Go GPU is for power-constrained handheld or embedded scenarios where its 28 W envelope and integrated nature are the deciding factors.

Architecture Differences

The two parts diverge at every architectural level. The Ryzen Z2 Go GPU uses the Rembrandt+ chip with RDNA 2.0 architecture, fabricated on a 6 nm process at TSMC. It contains 13,100 million transistors on a 208 mm² die, yielding a transistor density of 63.0 million per mm². The RTX 5080 Mobile uses the GB203 chip with Blackwell 2.0 architecture, fabricated on a 5 nm process at TSMC. It contains 45,600 million transistors on a 378 mm² die, yielding a transistor density of 120.6 million per mm². The RTX 5080 Mobile has more than three times the transistor count and a density that is roughly double that of the Ryzen part, indicating a much more complex and capable design.

The compute pipeline differs substantially. The Ryzen Z2 Go GPU has 768 shading units, 48 texture mapping units, 32 raster output units, and 12 ray tracing cores. It has no tensor cores. The RTX 5080 Mobile has 7,680 shading units, 240 TMUs, 96 ROPs, 60 ray tracing cores, and 240 tensor cores. That is a 10-fold advantage in shading units, a 5-fold advantage in TMUs, a 3-fold advantage in ROPs, and a 5-fold advantage in ray tracing cores. The tensor core presence alone gives the RTX 5080 Mobile capabilities that the Ryzen part cannot match in AI-accelerated workloads.

Clock behavior also differs significantly. The Ryzen Z2 Go GPU has a base clock of 800 MHz and a boost clock of 2,700 MHz. The RTX 5080 Mobile has a base clock of 975 MHz and a boost clock of 1,500 MHz. Despite the lower boost clock, the RTX 5080 Mobile delivers far higher throughput due to its massive shader count. The memory subsystem tells a similar story: the Ryzen part uses 16 GB of LPDDR5 on a 128-bit bus with 102.4 GB/s bandwidth, while the RTX 5080 Mobile uses 16 GB of GDDR7 on a 256-bit bus with 896.0 GB/s bandwidth. The bandwidth gap is roughly 8.7-fold, which directly impacts texture-heavy and large-scene workloads.

The RTX 5080 Mobile also uses a PCIe 5.0 x16 bus interface, while the Ryzen Z2 Go GPU has no recorded bus interface. Display output also differs: the Ryzen part has a single USB Type-C output, while the RTX 5080 Mobile's outputs are portable device dependent. The production status for both is Active. The Ryzen Z2 Go GPU has a release date of December 31, 2024, and the RTX 5080 Mobile has a release date of April 1, 2025. The RTX 5080 Mobile lists the GeForce 40 Mobile as its predecessor.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA GeForce RTX 5080 Mobile has an average benchmark score of 38,349, while the AMD Ryzen Z2 Go GPU has an average benchmark score of 0 with no recorded benchmark entries.

Q: What is the TDP difference between the two?

A: The Ryzen Z2 Go GPU has a TDP of 28 W, while the RTX 5080 Mobile has a TDP of 80 W. The RTX 5080 Mobile uses nearly three times the power.

Q: Do both GPUs support the same DirectX version?

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

Q: How does the memory bandwidth compare?

A: The Ryzen Z2 Go GPU has 102.4 GB/s bandwidth using LPDDR5 on a 128-bit bus, while the RTX 5080 Mobile has 896.0 GB/s bandwidth using GDDR7 on a 256-bit bus.

Q: Which GPU has tensor cores?

A: The RTX 5080 Mobile has 240 tensor cores. The Ryzen Z2 Go GPU has no tensor cores listed.

Q: What is the transistor count difference?

A: The Ryzen Z2 Go GPU has 13,100 million transistors, while the RTX 5080 Mobile has 45,600 million transistors.

Specification Differences

The following fields differ between the two parts:

• Chip: Rembrandt+ vs GB203
• Architecture: RDNA 2.0 vs Blackwell 2.0
• Generation: Console GPU (AMD) vs GeForce 50 Mobile
• Process node: 6 nm vs 5 nm
• Transistors: 13,100 million vs 45,600 million
• Die size: 208 mm² vs 378 mm²
• Transistor density: 63.0M / mm² vs 120.6M / mm²
• Base clock: 800 MHz vs 975 MHz
• Boost clock: 2,700 MHz vs 1,500 MHz
• Memory clock: 800 MHz (6.4 Gbps effective) vs 1,750 MHz (28 Gbps effective)
• Memory type: LPDDR5 vs GDDR7
• Memory bus width: 128 bit vs 256 bit
• Memory bandwidth: 102.4 GB/s vs 896.0 GB/s
• Shading units: 768 vs 7,680
• TMUs: 48 vs 240
• ROPs: 32 vs 96
• RT cores: 12 vs 60
• Tensor cores: None vs 240
• Pixel rate: 86.40 GPixel/s vs 144.0 GPixel/s
• Texture rate: 129.6 GTexel/s vs 360.0 GTexel/s
• FP32 performance: 4.147 TFLOPS vs 23.04 TFLOPS
• FP16 performance: 8.294 TFLOPS (2:1) vs 23.04 TFLOPS (1:1)
• TDP: 28 W vs 80 W
• Slot width: None vs IGP
• Bus interface: None vs PCIe 5.0 x16
• Display outputs: 1x USB Type-C vs Portable Device Dependent
• Release date: December 31, 2024 vs April 1, 2025
• Predecessor: None vs GeForce 40 Mobile

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between these two parts, but the RTX 5080 Mobile has a full set of individual benchmark scores. The recorded data shows the RTX 5080 Mobile achieves a 3DMark Steel Nomad DX12 score of 4,952. In Geekbench, it scores 166,986 in OpenCL and 169,754 in Vulkan. PassMark results show a G3D score of 27,711, a GPU compute score of 12,134, a G2D score of 1,095, and DirectX scores of 314 (DX9), 253 (DX11), 171 (DX10), and 116 (DX12).

The Ryzen Z2 Go GPU has no benchmark scores in the database, so no direct numeric comparison is possible. What the data does show is the RTX 5080 Mobile's nearest rival comparisons: it is 0.1% above the GeForce MX570, 0.6% above the RTX 4080 Mobile, and 0.9% above both the MX570 A and the Radeon Pro 580X. These narrow deltas indicate the RTX 5080 Mobile sits in a tightly clustered performance band at the top of its class, with no single rival holding a decisive edge.

The raw compute figures provide the clearest separation. The RTX 5080 Mobile delivers 23.04 TFLOPS of FP32 performance versus 4.147 TFLOPS for the Ryzen Z2 Go GPU, a 5.6-fold advantage. FP16 performance is 23.04 TFLOPS for the RTX part versus 8.294 TFLOPS for the Ryzen part, a 2.8-fold advantage. Pixel rate is 144.0 GPixel/s versus 86.40 GPixel/s, and texture rate is 360.0 GTexel/s versus 129.6 GTexel/s. Every measured throughput metric favors the RTX 5080 Mobile by a wide margin.

Where Each One Wins

The RTX 5080 Mobile wins in every performance category where data exists. Its 7,680 shading units and 240 tensor cores make it the clear choice for high-resolution gaming, ray-traced workloads, and AI-accelerated compute. The 896.0 GB/s memory bandwidth supports large textures and complex scenes without stalling. The 144.0 GPixel/s pixel rate and 360.0 GTexel/s texture rate indicate it can sustain heavy fill-rate demands. The 81st percentile ranking and 38,349 average score place it among the higher-performing mobile GPUs in the database.

The Ryzen Z2 Go GPU wins in power efficiency and integration. Its 28 W TDP is less than half of the RTX 5080 Mobile's 80 W, making it suitable for fanless or ultra-compact designs. The single USB Type-C output and lack of power connectors indicate a low-power, self-contained solution. The 6 nm process and 208 mm² die size suggest a cost-effective manufacturing approach for handheld gaming devices. The 102.4 GB/s bandwidth, while far lower than the RTX part, is consistent with its 128-bit LPDDR5 configuration and 28 W envelope.

The data does not support any benchmark-based win for the Ryzen Z2 Go GPU, as it has no recorded scores. Its advantage is purely architectural: lower power draw, smaller die, and integrated design. The RTX 5080 Mobile is the performance leader by every measurable metric, while the Ryzen Z2 Go GPU is the appropriate choice for devices where power consumption and physical footprint take priority over raw throughput.