NVIDIA GeForce RTX 5080 Mobile vs NVIDIA GeForce RTX 5090 Mobile Comparison

FAQ

Q: Which GPU is faster in 3DMark Steel Nomad DX12?

A: The NVIDIA GeForce RTX 5090 Mobile scores 5871, which is 18.6% higher than the RTX 5080 Mobile's 4952.

Q: How do the two compare in compute workloads?

A: The RTX 5090 Mobile leads in PassMark GPU Compute with 13401 versus 12134, a 10.4% advantage. In Geekbench OpenCL, the RTX 5090 Mobile scores 201834 against 166986, a 20.9% lead.

Q: Does the RTX 5080 Mobile win any benchmark?

A: Yes, the RTX 5080 Mobile wins only PassMark G2D with 1095 versus 1057, a 3.5% margin. That is its sole victory in the head-to-head set.

Q: What are the memory configurations?

A: The RTX 5090 Mobile has 24 GB of GDDR7 on a 256-bit bus with 896.0 GB/s bandwidth. The RTX 5080 Mobile has 16 GB of GDDR7 on the same 256-bit bus and identical 896.0 GB/s bandwidth.

Q: Do both cards use the same architecture?

A: Both are built on NVIDIA's Blackwell 2.0 architecture with the GB203 chip, manufactured on TSMC's 5 nm process. They share the same 45,600 million transistor count and 378 mm² die size.

Q: Which card has a higher power draw?

A: The RTX 5090 Mobile has a TDP of 95 W, while the RTX 5080 Mobile has a TDP of 80 W. The RTX 5090 Mobile draws more power, consistent with its higher performance.

Architecture Differences

Both GPUs belong to the GeForce 50-series and share the Blackwell 2.0 architecture, but they are configured very differently. The RTX 5090 Mobile uses the GB203 chip with 10,496 shading units, 328 TMUs, and 112 ROPs. The RTX 5080 Mobile cuts those counts to 7,680 shading units, 240 TMUs, and 96 ROPs. That is a difference of 2,816 shading units, 88 TMUs, and 16 ROPs, which explains much of the performance gap.

Ray tracing and tensor hardware follow the same pattern. The RTX 5090 Mobile has 82 RT cores and 328 tensor cores. The RTX 5080 Mobile has 60 RT cores and 240 tensor cores. The ratio is consistent across the entire compute pipeline, suggesting the RTX 5080 Mobile uses a partially disabled or smaller GB203 bin rather than a completely different design.

Clock speeds also differ, though not dramatically. The RTX 5090 Mobile runs a 990 MHz base clock and 1515 MHz boost clock. The RTX 5080 Mobile runs slightly lower at 975 MHz base and 1500 MHz boost. Memory clocks are identical at 1750 MHz with 28 Gbps effective data rate, and both cards use GDDR7.

The process node, foundry, transistor count, and die size are exactly the same: 5 nm TSMC, 45,600 million transistors, 378 mm². Transistor density is identical at 120.6M per mm². Both cards are integrated into the motherboard (IGP slot width) with no power connectors, and both connect via PCIe 5.0 x16. API support is identical as well: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The 24 GB versus 16 GB memory split is the second major architectural difference after the shader counts. This affects capacity for large workloads, while bandwidth remains the same because the bus width and memory speed are identical.

Where Each One Wins

The RTX 5090 Mobile wins 9 of the 10 head-to-head benchmarks. It dominates in raw 3D rendering, compute, and API-specific workloads. The largest margins come in compute-oriented tests: 20.9% in Geekbench OpenCL, 19% in PassMark DirectX 12, and 18.6% in 3DMark Steel Nomad DX12. These results indicate the RTX 5090 Mobile is the stronger choice for GPU compute tasks such as OpenCL acceleration and DirectX 12 workloads.

The RTX 5080 Mobile's only win is PassMark G2D, a 2D graphics test. Its score of 1095 beats 1057, a 3.5% margin. This is a narrow win in a niche workload, and it does not offset the RTX 5090 Mobile's advantages elsewhere. For any user prioritizing 3D performance, ray tracing, or general compute, the RTX 5090 Mobile is clearly ahead.

The RTX 5090 Mobile also benefits from 24 GB of memory, which matters for large datasets, high-resolution textures, or AI workloads that exceed 16 GB. The RTX 5080 Mobile's 16 GB is sufficient for typical gaming and moderate workloads, but the RTX 5090 Mobile has more headroom.

The power difference is relevant for laptop design. The RTX 5090 Mobile's 95 W TDP versus the RTX 5080 Mobile's 80 W means the RTX 5090 Mobile requires more cooling and battery capacity. The RTX 5080 Mobile could be the better fit for slimmer or more power-efficient laptops, at the cost of lower performance.

Specification Differences

| Specification | RTX 5090 Mobile | RTX 5080 Mobile |

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

| Chip | GB203 | GB203 |

| Architecture | Blackwell 2.0 | Blackwell 2.0 |

| Process Node | 5 nm | 5 nm |

| Transistors | 45,600 million | 45,600 million |

| Die Size | 378 mm² | 378 mm² |

| Base Clock | 990 MHz | 975 MHz |

| Boost Clock | 1515 MHz | 1500 MHz |

| Memory Size | 24 GB | 16 GB |

| Memory Type | GDDR7 | GDDR7 |

| Memory Bus | 256 bit | 256 bit |

| Memory Bandwidth | 896.0 GB/s | 896.0 GB/s |

| Shading Units | 10,496 | 7,680 |

| TMUs | 328 | 240 |

| ROPs | 112 | 96 |

| RT Cores | 82 | 60 |

| Tensor Cores | 328 | 240 |

| Pixel Rate | 169.7 GPixel/s | 144.0 GPixel/s |

| Texture Rate | 496.9 GTexel/s | 360.0 GTexel/s |

| FP32 | 31.80 TFLOPS | 23.04 TFLOPS |

| FP16 | 31.80 TFLOPS (1:1) | 23.04 TFLOPS (1:1) |

| TDP | 95 W | 80 W |

| Release Date | 2025-03-26 | 2025-04-01 |

The two cards share the same silicon foundation but diverge in every compute-related specification. The RTX 5090 Mobile has 36.7% more shading units, 36.7% more TMUs, 36.7% more tensor cores, and 36.7% more RT cores. Its pixel rate is 17.8% higher and texture rate is 38.0% higher. FP32 throughput is 38.0% higher at 31.80 TFLOPS versus 23.04 TFLOPS.

The release dates differ by a few days, with the RTX 5090 Mobile on 2025-03-26 and the RTX 5080 Mobile on 2025-04-01. Both are listed as Active production status and both use the GeForce 40 Mobile series as their predecessor.

Head-to-Head Benchmarks

The head-to-head results give the RTX 5090 Mobile a 9 to 1 win count. The most consequential benchmark is 3DMark Steel Nomad DX12, a modern DirectX 12 gaming test. The RTX 5090 Mobile scores 5871 versus 4952, a delta of 18.6%. This is a large gap for a gaming workload and suggests the RTX 5090 Mobile will deliver noticeably higher frame rates in demanding titles.

Geekbench OpenCL shows an even bigger margin. The RTX 5090 Mobile scores 201834, while the RTX 5080 Mobile scores 166986. The 20.9% delta is the largest of any benchmark in the comparison. OpenCL is widely used for compute acceleration, so this result reinforces the RTX 5090 Mobile's strength outside pure gaming.

Geekbench Vulkan follows a similar pattern. The RTX 5090 Mobile scores 198405 versus 169754, a 16.9% lead. Vulkan performance matters for both games and compute, and the RTX 5090 Mobile maintains a comfortable advantage.

PassMark DirectX 12 shows the RTX 5090 Mobile at 138 versus 116, a 19% delta. This is another double-digit win, matching the trend in 3DMark. DirectX 11 results are closer: 269 versus 253, a 6.3% delta. DirectX 10 shows 183 versus 171, a 7% delta. DirectX 9 shows the smallest gap at 324 versus 314, only 3.2%. The pattern is clear: the newer the API, the larger the RTX 5090 Mobile's advantage. This likely reflects the higher shader count and newer hardware features being more fully utilized by modern APIs.

PassMark G3D, a general 3D graphics benchmark, gives the RTX 5090 Mobile 30034 versus 27711, an 8.4% delta. This is a solid but smaller win than the compute tests. PassMark GPU Compute gives the RTX 5090 Mobile 13401 versus 12134, a 10.4% delta. Again, the compute advantage is substantial.

The single win for the RTX 5080 Mobile is PassMark G2D. It scores 1095 versus 1057, a 3.5% delta. This benchmark measures 2D graphics operations, which are not typically performance-critical for gaming or compute workloads. The result does not change the overall picture.

The average benchmark score tells the same story. The RTX 5090 Mobile has an average of 45152, while the RTX 5080 Mobile has 38349. The percentile rankings place the RTX 5090 Mobile at 84 versus 81 for the RTX 5080 Mobile, meaning the RTX 5090 Mobile sits in a higher tier among all GPUs.

The nearest rival data provides context. The RTX 5090 Mobile's average score of 45152 is within 0.5% of the AMD Radeon Pro 5500 XT (45384) and 0.8% above the NVIDIA GeForce RTX 4070 Ti (44795). The RTX 5080 Mobile's average of 38349 is 0.1% above the NVIDIA GeForce MX570 (38299) and 0.6% above the NVIDIA GeForce RTX 4080 Mobile (38135). These comparisons place both cards in competitive positions relative to other GPUs, with the RTX 5090 Mobile holding a higher overall standing.

The Verdict

The data supports a clear verdict: the NVIDIA GeForce RTX 5090 Mobile is the faster GPU by a wide margin. It wins 9 of 10 head-to-head benchmarks and leads in every compute-heavy and modern-API test. Its advantages are largest in OpenCL (20.9%), DirectX 12 (19%), and 3DMark Steel Nomad (18.6%), which are the workloads most representative of demanding gaming and compute use.

The RTX 5080 Mobile is not without merit. Its 16 GB GDDR7 memory and 896.0 GB/s bandwidth match the RTX 5090 Mobile's memory speed, and its 80 W TDP is 15 W lower, making it a more efficient option for thinner laptops. In PassMark G2D, it actually beats the RTX 5090 Mobile by 3.5%, though this is a minor factor.

Buyers who prioritize maximum performance should choose the RTX 5090 Mobile. It offers 38.0% higher FP32 throughput, 38.0% higher texture rate, and 17.8% higher pixel rate than the RTX 5080 Mobile. The 24 GB memory capacity also provides headroom for large workloads that would exhaust 16 GB.

Buyers who prioritize power efficiency or laptop design flexibility may prefer the RTX 5080 Mobile. Its 80 W TDP allows for lighter cooling solutions and potentially longer battery life. The performance penalty is significant, but the RTX 5080 Mobile still delivers strong results in its own right, sitting within 0.6% of the RTX 4080 Mobile in average score.

There is no scenario in which the RTX 5080 Mobile outperforms the RTX 5090 Mobile in gaming or compute. The RTX 5090 Mobile is the definitive choice for users who want the highest mobile GPU performance in the GeForce 50-series, while the RTX 5080 Mobile serves users who accept lower performance for lower power draw.