NVIDIA GeForce RTX 3080 Ti vs NVIDIA GeForce RTX 5070 Ti Mobile Comparison

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA GeForce RTX 3080 Ti holds a clear lead in the database, with an average benchmark score of 41,187 compared to 35,435 for the RTX 5070 Ti Mobile, a difference of roughly 16%.

Q: How do the two cards rank against all other GPUs in the database?

A: The RTX 3080 Ti sits at the 83rd percentile of all GPUs, while the RTX 5070 Ti Mobile is at the 80th percentile. Both are high-ranking parts, but the desktop card places slightly higher.

Q: Which GPU wins more head-to-head benchmark tests?

A: The RTX 3080 Ti wins 8 out of 9 direct comparisons in the recorded data. The only test it loses is PassMark DirectX 11, where the RTX 5070 Ti Mobile scores 237 versus 223, a 5.9% margin.

Q: What is the biggest performance gap between the two in any single test?

A: The largest delta is in PassMark GPU Compute, where the RTX 3080 Ti scores 15,282 against 10,101, a 51.3% advantage. The second largest is in Geekbench Vulkan, where the 3080 Ti leads by 38.4%.

Q: Are these cards in the same performance tier?

A: Not exactly. The RTX 3080 Ti's nearest rivals include the NVIDIA GeForce RTX 5070 (desktop) at a 2% delta, while the RTX 5070 Ti Mobile sits near the Quadro GV100 (0.2% delta). The 3080 Ti is the stronger part overall, but the mobile card is competitive in specific API tests.

Q: Do both cards support the same DirectX and Vulkan features?

A: Yes. Both are listed with DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The API feature sets are identical in the database.

Architecture Differences

The two GPUs represent separate architectural generations and design philosophies. The RTX 3080 Ti is built on the Ampere architecture using the GA102 chip, fabricated on an 8 nm Samsung process. It packs 28,300 million transistors onto a 628 mm² die, yielding a transistor density of 45.1 million per square millimeter. In contrast, the RTX 5070 Ti Mobile uses the Blackwell 2.0 architecture with the GB205 chip, fabricated on a 5 nm TSMC process. It contains 31,100 million transistors on a much smaller 263 mm² die, achieving a density of 118.3 million per square millimeter. The newer process allows for more than double the transistor density per area.

The core configurations differ heavily. The RTX 3080 Ti features 10,240 shading units, 320 texture mapping units, and 112 raster output units. It also includes 80 ray tracing cores and 320 tensor cores. The RTX 5070 Ti Mobile has 5,888 shading units, 184 TMUs, and 80 ROPs, with 46 ray tracing cores and 184 tensor cores. Despite having fewer cores, the mobile chip's higher transistor density suggests a more modern, power-efficient design.

Clock speeds also tell a story of design intent. The RTX 3080 Ti runs at a base clock of 1365 MHz and a boost clock of 1665 MHz. The RTX 5070 Ti Mobile operates at a much lower base of 847 MHz and a boost of 1447 MHz. The desktop card's higher clocks contribute to its substantial compute advantage: 34.10 TFLOPS FP32 versus 17.04 TFLOPS FP32 for the mobile part. Both have 1:1 FP16 to FP32 ratios, so the FP16 numbers match those figures.

Memory subsystems diverge as well. The RTX 3080 Ti uses 12 GB of GDDR6X on a 384-bit bus, delivering 912.4 GB/s of bandwidth. The RTX 5070 Ti Mobile also has 12 GB, but it uses GDDR7 on a 192-bit bus, providing 672.0 GB/s. While the mobile card uses faster memory (28 Gbps effective versus 19 Gbps effective), the narrower bus limits total bandwidth. The RTX 3080 Ti has a 384-bit interface versus 192-bit, which explains its higher bandwidth despite slower memory speed.

Power and physical characteristics are fundamentally different. The RTX 3080 Ti has a 350 W TDP, requires a dual-slot cooler, a single 12-pin power connector, and a suggested 750 W power supply. The RTX 5070 Ti Mobile has a 60 W TDP, is classified as an IGP (integrated graphics processor), requires no power connectors, and has no suggested PSU. The desktop card measures 285 mm in length, 112 mm in height, and 40 mm in width, while the mobile part has no listed dimensions due to its portable-device integration. The RTX 3080 Ti uses PCIe 4.0 x16, while the mobile chip uses PCIe 5.0 x16. Display outputs differ as well: the desktop card has 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the mobile GPU's outputs are marked as "Portable Device Dependent."

The Verdict

The data clearly favors the RTX 3080 Ti for raw performance. It wins 8 of 9 head-to-head tests, has a higher average benchmark score (41,187 versus 35,435), and a higher percentile ranking (83rd versus 80th). Its victories are not marginal: the 51.3% lead in GPU compute and 38.4% lead in Geekbench Vulkan are substantial. For users prioritizing maximum throughput in compute-heavy workloads or Vulkan-based applications, the RTX 3080 Ti is the definitive choice.

The RTX 5070 Ti Mobile, however, has its own merits. Its single win in PassMark DirectX 11 (237 versus 223) shows that in certain legacy or specific API paths, the newer architecture can outperform the older desktop part despite far lower power consumption. The mobile chip's 60 W TDP versus 350 W means it is designed for portable systems where power efficiency and thermal constraints dominate. Its GDDR7 memory and PCIe 5.0 interface reflect a modern platform, though the measured performance does not overtake the older card overall.

The choice depends on the use case. For a desktop workstation or gaming rig where space, power, and cooling are available, the RTX 3080 Ti offers superior performance across nearly every metric in the database. For a laptop or compact mobile system where power draw and integration are critical, the RTX 5070 Ti Mobile provides competitive performance in a fraction of the power envelope, though it trails in absolute scores. The RTX 3080 Ti is end-of-life, while the RTX 5070 Ti Mobile is active production, which may matter for long-term availability and driver support.

Specification Differences

The following fields differ between the two GPUs:

• Architecture: Ampere (GA102) versus Blackwell 2.0 (GB205)
• Process Node: 8 nm Samsung versus 5 nm TSMC
• Transistors: 28,300 million versus 31,100 million
• Die Size: 628 mm² versus 263 mm²
• Transistor Density: 45.1M / mm² versus 118.3M / mm²
• Base Clock: 1365 MHz versus 847 MHz
• Boost Clock: 1665 MHz versus 1447 MHz
• Memory Clock: 19 Gbps effective versus 28 Gbps effective
• Memory Type: GDDR6X versus GDDR7
• Memory Bus Width: 384 bit versus 192 bit
• Memory Bandwidth: 912.4 GB/s versus 672.0 GB/s
• Shading Units: 10,240 versus 5,888
• TMUs: 320 versus 184
• ROPs: 112 versus 80
• RT Cores: 80 versus 46
• Tensor Cores: 320 versus 184
• Pixel Rate: 186.5 GPixel/s versus 115.8 GPixel/s
• Texture Rate: 532.8 GTexel/s versus 266.2 GTexel/s
• FP32 Performance: 34.10 TFLOPS versus 17.04 TFLOPS
• FP16 Performance: 34.10 TFLOPS versus 17.04 TFLOPS
• TDP: 350 W versus 60 W
• Slot Width: Dual-slot versus IGP
• Power Connectors: 1x 12-pin versus None
• Suggested PSU: 750 W versus not listed
• Bus Interface: PCIe 4.0 x16 versus PCIe 5.0 x16
• Display Outputs: 1x HDMI 2.1, 3x DisplayPort 1.4a versus Portable Device Dependent
• Dimensions: 285 mm x 112 mm x 40 mm versus not listed
• Production Status: End-of-life versus Active
• Release Date: 2021-05-30 versus 2025-02-28
• Launch MSRP: 1,199 USD versus not listed

Head-to-Head Benchmarks

The RTX 3080 Ti dominates the direct benchmark comparisons, but the margins vary by test. In Geekbench Vulkan, the desktop card scores 192,697 against 139,213, a 38.4% advantage. This large gap suggests the Ampere architecture's Vulkan implementation is significantly more efficient for compute and graphics workloads on that API. The Geekbench OpenCL result shows a narrower but still clear lead: 170,037 versus 143,870, a difference of 18.2%.

Compute-heavy tests further emphasize the gap. PassMark GPU Compute gives the RTX 3080 Ti a 51.3% lead (15,282 versus 10,101), the largest margin in the entire head-to-head set. This is consistent with the card's higher FP32 throughput and wider memory bus. The PassMark DirectX 10 test also favors the desktop part, with a 21.9% delta (184 versus 151). In DirectX 12, the 3080 Ti wins by 7.8% (110 versus 102), a modest lead that indicates the newer mobile architecture narrows the gap in more modern APIs. PassMark DirectX 9 shows a 5.8% edge (274 versus 259), and PassMark G2D shows an 11.2% advantage (1091 versus 981). PassMark G3D, the overall 3D performance metric, gives the 3080 Ti a 12% win (26,896 versus 24,004).

The RTX 5070 Ti Mobile's sole victory comes in PassMark DirectX 11, scoring 237 against 223, a 5.9% margin. This is an interesting result because it is the only test where the newer chip outperforms the older one. The win may stem from driver optimizations or the mobile chip's memory architecture in that specific API path. However, it is an isolated result; the 3080 Ti wins all other tests, including a 7.8% lead in DirectX 12, which is the more modern API.

Overall, the head-to-head data shows a consistent pattern: the RTX 3080 Ti is faster in 8 of 9 tests, with its biggest wins in compute and Vulkan workloads. The mobile card is competitive only in DirectX 11, and even then by a small margin. The average benchmark scores corroborate this: 41,187 for the 3080 Ti versus 35,435 for the 5070 Ti Mobile. The 3080 Ti's nearest rival is the NVIDIA GeForce RTX 5070 (desktop) at a 2% delta, while the 5070 Ti Mobile sits near the Quadro GV100 at a 0.2% delta, placing both cards in similar company but with the desktop part ahead.