NVIDIA GeForce RTX 3080 Mobile

The NVIDIA GeForce RTX 3080 Mobile is an Ampere-architecture laptop GPU built on Samsung's 8 nm process, packing 17,400 million transistors into a 392 mm² die. Its aggregate benchmark average of 23,628 places it at the 67th percentile of all GPUs, a solid mid-to-upper-tier position for a mobile part, though the data reveals a fiercely competitive landscape where the margins over its closest rivals are razor-thin.

Benchmark Performance

The RTX 3080 Mobile's most telling result is its 3DMark Steel Nomad DX12 score of 2,644, which anchors its modern gaming capability. Across the broader suite, the GPU posts a Geekbench OpenCL score of 104,831 and a Vulkan score of 104,066, showing near-parity between the two compute APIs. In PassMark, the G3D score of 16,321 is the headline gaming metric, while the GPU compute score of 7,276 indicates a substantial gap between graphics and raw compute throughput. The legacy DirectX tests are less flattering: PassMark scores of 170 for DX9, 146 for DX11, and 120 for DX10 show the architecture's strength is not in older, less parallel workloads. The DX12 score of 72 is notably weak, suggesting that this mobile part relies heavily on modern driver optimizations and feature sets rather than raw legacy rasterization.

The average benchmark score of 23,628 is the key figure for positioning. Against the nearest rival, the desktop NVIDIA GeForce RTX 2080 (average 23,664), the mobile 3080 trails by a mere -0.2%, a statistical tie. This is remarkable for a laptop chip facing a previous-generation desktop card. The delta to the NVIDIA GeForce RTX 3070 Ti Mobile is a positive 0.5%, meaning the 3080 Mobile edges out its direct mobile successor by a hair. Against the NVIDIA GeForce RTX 5050, the lead expands slightly to 0.6%, and versus the much older NVIDIA GeForce GTX 780 Ti, the margin is 1.2%. These sub-2% deltas indicate that the RTX 3080 Mobile sits at the very top of a performance plateau, where architectural generation matters less than the specific power limits and cooling of the host laptop.

How It Compares

vs. NVIDIA GeForce RTX 2080: The data shows the RTX 3080 Mobile is effectively equivalent to this desktop card, with a delta of -0.2%. This is a strong endorsement of the Ampere architecture's efficiency, as a mobile part matches a desktop part from the previous generation. The implication is that laptop buyers in 2021 were getting desktop-class performance from the prior generation, at least in aggregate workloads.

vs. NVIDIA GeForce RTX 3070 Ti Mobile: The 3080 Mobile leads by 0.5%, a narrow but consistent advantage. This suggests that the 3080 Mobile's higher TDP and wider memory bus (256-bit) outweigh the 3070 Ti Mobile's architectural refinements. The difference is within noise for most real-world gaming, but the 3080 Mobile holds the crown in this comparison.

vs. NVIDIA GeForce RTX 5050: A 0.6% lead over this newer entry-level card is surprising, given the generational gap. The RTX 3080 Mobile's superior memory bandwidth (448.0 GB/s) and higher shading unit count (6,144) likely compensate for the 5050's newer architecture. This is a testament to the 3080 Mobile's high-end positioning within its own generation.

vs. NVIDIA GeForce GTX 780 Ti: The 1.2% advantage over this 2013-era desktop card is the largest delta in the rival set. While the GTX 780 Ti was a flagship in its day, the RTX 3080 Mobile's modern feature set — including ray tracing and DLSS — makes it a far more capable gaming solution today, even if the aggregate scores are close.

Ray Tracing and Feature Set

The RTX 3080 Mobile is equipped with 48 dedicated RT cores and 192 tensor cores, the hardware foundation for ray-traced effects and AI-accelerated features. The API support is comprehensive: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The DirectX 12 Ultimate designation confirms full support for hardware ray tracing, variable rate shading, and mesh shaders, which are the pillars of modern AAA game visuals. The tensor cores enable DLSS, which is critical for maintaining playable frame rates when ray tracing is enabled, as the 18.98 TFLOPS FP32 compute is spread thin when simulating light paths. The 1:1 FP16 to FP32 ratio (both 18.98 TFLOPS) is a notable Ampere trait, doubling the throughput for workloads that can use reduced precision, though gaming rarely benefits from this directly. The presence of Vulkan 1.4 support means the GPU is ready for cross-platform engines that leverage explicit multi-threading and lower driver overhead.

Who Should Consider It

Given the benchmark data, the RTX 3080 Mobile is a top-tier choice for 1440p gaming and a capable 4K performer when settings are tuned. The 67th percentile standing means it outperforms the majority of GPUs in the database, but the tiny deltas to rivals suggest that it is not a generation-defining leap. For 1080p gaming, this GPU is overkill, as the PassMark G3D score of 16,321 will crush most titles at maximum settings. At 1440p, the 448.0 GB/s bandwidth and 96 ROPs provide enough fill rate to maintain high frame rates in demanding titles, though the 8 GB VRAM may become a limiting factor in the most texture-heavy games. For 4K, the GPU can manage playable frame rates in less demanding titles, but the data suggests that the 18.98 TFLOPS compute is not sufficient for consistently high frame rates with ray tracing enabled at that resolution. Users targeting high-refresh-rate 1080p or smooth 1440p should consider this GPU; those seeking native 4K with ray tracing should look to higher-tier parts.

Power and Cooling

The RTX 3080 Mobile carries a TDP of 115 W, a substantial power envelope for a laptop component. This figure is the key constraint on performance: the benchmark scores are achieved within this 115 W limit, and any laptop using this GPU must have a cooling solution capable of dissipating that heat in a thin chassis. The power connectors are listed as "None," which indicates that this is a mobile part soldered to the motherboard, drawing power through the board's power delivery system rather than a discrete PCIe connector. There is no suggested PSU specification in the data, but given the 115 W TDP, a laptop's power adapter must supply significantly more to also power the CPU, display, and other components. The end-of-life production status and 2021 release date suggest that this GPU is now obsolete for new laptop designs, but the 115 W TDP remains a useful reference for understanding the thermal demands of this generation of high-end mobile GPUs.

Memory Subsystem

The memory configuration is a defining strength of the RTX 3080 Mobile: 8 GB of GDDR6 on a 256-bit bus, yielding a bandwidth of 448.0 GB/s. This bandwidth figure is the highest among its nearest rivals, and it explains why the GPU performs so well in aggregate benchmarks despite its modest compute lead. The 256-bit bus width is a significant advantage over narrower 192-bit or 128-bit implementations, as it allows the GPU to feed its 6,144 shading units more efficiently. The memory clock is listed at 1750 MHz with 14 Gbps effective data rate, which is a standard configuration for GDDR6. For high-resolution gaming, the 8 GB capacity is adequate for 1440p and most 4K titles, though the bandwidth is the more critical factor; 448.0 GB/s is sufficient to avoid stuttering in most scenarios, but the 8 GB capacity will be the first bottleneck in future titles that demand more than 8 GB of VRAM. The 296.6 GTexel/s texture rate and 148.3 GPixel/s pixel rate are directly supported by this memory system, ensuring that texture fetches and pixel writes do not starve the GPU.

FAQ

Q: How does the RTX 3080 Mobile compare to the desktop RTX 2080?

A: The average benchmark scores are nearly identical: 23,628 for the mobile 3080 versus 23,664 for the desktop 2080, a delta of -0.2%, meaning the mobile part is statistically equivalent.

Q: What is the GPU's standing among all GPUs?

A: It sits at the 67th percentile of all GPUs in the database, indicating it outperforms roughly two-thirds of all graphics cards, including many desktop parts.

Q: Does this GPU support hardware ray tracing?

A: Yes, it has 48 dedicated RT cores and supports DirectX 12 Ultimate (12_2), which mandates hardware ray tracing and other modern features.

Q: What is the memory bandwidth and why does it matter?

A: The bandwidth is 448.0 GB/s, achieved via 8 GB of GDDR6 on a 256-bit bus. This high bandwidth is crucial for feeding the 6,144 shading units at high resolutions.

Q: Is this GPU suitable for 4K gaming?

A: The 18.98 TFLOPS FP32 compute and 8 GB VRAM suggest it can handle 4K in less demanding titles or with settings reduced, but it is better suited to 1440p where the 448.0 GB/s bandwidth is fully utilized.

Q: What is the power draw of the RTX 3080 Mobile?

A: The TDP is 115 W, and the power connectors are listed as "None," meaning it is a soldered mobile part powered through the laptop's motherboard rather than a discrete connector.