NVIDIA GeForce RTX 4080 Mobile vs NVIDIA P104-100 Comparison

Where Each One Wins

The benchmark data splits cleanly along architectural generations. The NVIDIA GeForce RTX 4080 Mobile wins every head-to-head compute test by a wide margin, while the NVIDIA P104-100 offers no recorded benchmark victory in the shared test set. The RTX 4080 Mobile is the clear performance leader in both OpenCL and Vulkan workloads, with margins exceeding 200% in each case.

For general compute tasks, the RTX 4080 Mobile dominates. Its Geekbench OpenCL score of 159575 versus 52368 for the P104-100 represents a 204.7% advantage. The Vulkan result is even more lopsided: 145807 versus 45165, a 222.8% delta. Any workload that leverages either API will strongly favor the RTX 4080 Mobile.

The P104-100, by contrast, has no wins in the shared benchmark suite. Its strengths, if any, would have to come from outside the measured tests. The recorded data shows a GPU that is competitive only within its own peer group, sitting at the 77th percentile of all GPUs, while the RTX 4080 Mobile reaches the 81st percentile. The average benchmark score tells the same story: 38135 for the RTX 4080 Mobile versus 32982 for the P104-100.

The use-case split is therefore not about different workloads where each card wins. It is about the RTX 4080 Mobile being the only option for serious compute, while the P104-100 remains a legacy mining-oriented part with no measured performance advantage in any shared test.

Architecture Differences

The two GPUs come from different eras of NVIDIA design. The RTX 4080 Mobile uses the AD104 chip built on Ada Lovelace architecture, manufactured on a 5 nm process at TSMC. It packs 35,800 million transistors into a 294 mm² die, yielding a transistor density of 121.8 million per square millimeter. The P104-100 uses the GP104 chip on the older Pascal architecture, built on a 16 nm process, also at TSMC. It contains 7,200 million transistors on a slightly larger 314 mm² die, giving a density of just 22.9 million per square millimeter.

The core configurations differ massively. The RTX 4080 Mobile has 7424 shading units, 232 texture mapping units, 80 ROPs, 58 ray tracing cores, and 232 tensor cores. The P104-100 has 1920 shading units, 120 TMUs, 64 ROPs, and no ray tracing or tensor cores at all. This is a generational leap in both raw count and feature set.

Memory subsystems also diverge. The RTX 4080 Mobile uses 12 GB of GDDR6 memory on a 192 bit bus, delivering 432.0 GB/s of bandwidth. The P104-100 uses 4 GB of GDDR5X on a wider 256 bit bus, but achieves only 320.3 GB/s due to lower effective clocks. The RTX 4080 Mobile also runs its memory at 2250 MHz (18 Gbps effective), while the P104-100 runs at 1251 MHz (10 Gbps effective).

Clock behavior differs as well. The P104-100 has a higher base clock at 1607 MHz and a boost clock of 1733 MHz. The RTX 4080 Mobile starts lower at 1290 MHz base and boosts to 1665 MHz. Despite the lower clocks, the RTX 4080 Mobile produces far more throughput: 24.72 TFLOPS of FP32 versus 6.655 TFLOPS, and 386.3 GTexel/s versus 208.0 GTexel/s. The FP16 comparison is stark: the RTX 4080 Mobile achieves 24.72 TFLOPS at a 1:1 ratio, while the P104-100 manages only 104.0 GFLOPS at a 1:64 ratio.

The P104-100 is a dual-slot card with a 267 mm (10.5 inch) length, a single 8-pin power connector, and a suggested PSU of 200 W. It has no display outputs, reflecting its mining origins. The RTX 4080 Mobile is an integrated form factor (IGP) with no power connectors listed and display outputs described as portable device dependent.

Head-to-Head Benchmarks

Only two shared benchmark tests exist in the database, and the RTX 4080 Mobile wins both decisively.

In Geekbench OpenCL, the RTX 4080 Mobile scores 159575 against 52368 for the P104-100. That is a 204.7% advantage, meaning the RTX 4080 Mobile delivers roughly three times the performance in this compute workload. The P104-100's score is closer to its nearest rivals: it sits 0.4% above the NVIDIA T600 Mobile, 0.5% below the T550 Mobile, and 0.6% below the GeForce RTX 3050 Mobile. The RTX 4080 Mobile, meanwhile, is 0.4% below the GeForce MX570 and 0.6% below the RTX 5080 Mobile, but 1.3% above the RTX 4070 and 1.3% above the Tesla P4.

In Geekbench Vulkan, the margin grows even larger. The RTX 4080 Mobile scores 145807 versus 45165, a 222.8% difference. This indicates the Ada Lovelace architecture scales even better in the Vulkan API relative to the Pascal-based P104-100. The gap in Vulkan is proportionally larger than in OpenCL, suggesting the RTX 4080 Mobile benefits more from modern API features.

The RTX 4080 Mobile also has a broader benchmark profile. The database includes nine benchmark entries for it, covering DirectX 9, 10, 11, 12, G2D, G3D, and GPU compute tests. Its best individual results include a Passmark G3D score of 24926, a Passmark GPU compute score of 11191, and a Passmark G2D score of 929. The P104-100 has only three recorded benchmarks, with no DirectX or Passmark entries at all.

The wins tally reflects this: the RTX 4080 Mobile records 2 wins in the head-to-head comparison, while the P104-100 records 0.

FAQ

Q: Which GPU is faster in OpenCL compute?

A: The RTX 4080 Mobile scores 159575 in Geekbench OpenCL versus 52368 for the P104-100, a 204.7% advantage.

Q: Does the P104-100 win any shared benchmark?

A: No. In the two recorded head-to-head tests, Geekbench OpenCL and Geekbench Vulkan, the P104-100 loses both. Its win count is 0.

Q: How do the memory configurations compare?

A: The RTX 4080 Mobile has 12 GB of GDDR6 on a 192 bit bus with 432.0 GB/s bandwidth. The P104-100 has 4 GB of GDDR5X on a 256 bit bus with 320.3 GB/s bandwidth.

Q: What is the transistor density difference?

A: The RTX 4080 Mobile achieves 121.8 million transistors per square millimeter on a 5 nm process. The P104-100 manages 22.9 million per square millimeter on 16 nm.

Q: Does the P104-100 support ray tracing or tensor cores?

A: No. The P104-100 has no ray tracing cores and no tensor cores. The RTX 4080 Mobile includes 58 ray tracing cores and 232 tensor cores.

Q: How does the Vulkan gap compare to the OpenCL gap?

A: The Vulkan gap is larger. The RTX 4080 Mobile leads by 222.8% in Vulkan (145807 versus 45165) and by 204.7% in OpenCL (159575 versus 52368).

Specification Differences

| Field | NVIDIA GeForce RTX 4080 Mobile | NVIDIA P104-100 |

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

| Architecture | Ada Lovelace | Pascal |

| Chip | AD104 | GP104 |

| Process node | 5 nm | 16 nm |

| Transistors | 35,800 million | 7,200 million |

| Die size | 294 mm² | 314 mm² |

| Transistor density | 121.8M / mm² | 22.9M / mm² |

| Base clock | 1290 MHz | 1607 MHz |

| Boost clock | 1665 MHz | 1733 MHz |

| Memory clock | 2250 MHz (18 Gbps effective) | 1251 MHz (10 Gbps effective) |

| Memory size | 12 GB | 4 GB |

| Memory type | GDDR6 | GDDR5X |

| Memory bus width | 192 bit | 256 bit |

| Memory bandwidth | 432.0 GB/s | 320.3 GB/s |

| Shading units | 7424 | 1920 |

| TMUs | 232 | 120 |

| ROPs | 80 | 64 |

| RT cores | 58 | None |

| Tensor cores | 232 | None |

| Pixel rate | 133.2 GPixel/s | 110.9 GPixel/s |

| Texture rate | 386.3 GTexel/s | 208.0 GTexel/s |

| FP32 performance | 24.72 TFLOPS | 6.655 TFLOPS |

| FP16 performance | 24.72 TFLOPS (1:1) | 104.0 GFLOPS (1:64) |

| TDP | 110 W | Not listed |

| Slot width | IGP | Dual-slot |

| Power connectors | None | 1x 8-pin |

| Suggested PSU | Not listed | 200 W |

| Bus interface | PCIe 4.0 x16 | PCIe 1.0 x4 |

| Display outputs | Portable Device Dependent | No outputs |

| DirectX support | 12 Ultimate (12_2) | 12 (12_1) |

| Vulkan support | 1.4 | 1.4 |

| Production status | Active | End-of-life |

| Release date | 2023-01-02 | 2017-12-11 |

| Length | Not listed | 267 mm (10.5 inches) |

| Percentile vs all GPUs | 81 | 77 |

| Average benchmark score | 38135 | 32982 |

The Verdict

The data points to one conclusion: the RTX 4080 Mobile is the superior GPU by every measured metric in the shared benchmark suite. It wins both head-to-head tests, holds a higher percentile ranking (81st versus 77th), and posts a higher average benchmark score (38135 versus 32982). Any user selecting between these two for compute workloads should choose the RTX 4080 Mobile without hesitation.

The RTX 4080 Mobile is also the more future-proof option. It supports DirectX 12 Ultimate (12_2), includes ray tracing and tensor cores, and offers 12 GB of memory versus 4 GB. Its FP16 performance at a 1:1 ratio makes it suitable for workloads that Pascal handles at a severe 1:64 penalty. The active production status and 2023 release date further reinforce its relevance.

The P104-100 is an end-of-life product from 2017, built for mining with no display outputs. Its only advantage in the recorded data is a higher base and boost clock, but that does not translate into competitive compute performance. Its 256 bit memory bus and larger die size cannot overcome the architectural gap. It sits near the RTX 3050 Mobile, T550 Mobile, and Radeon Pro 570 in its peer group, which places it in a much lower performance tier.

For anyone who needs a mobile GPU with modern features, the RTX 4080 Mobile is the clear pick. For anyone considering the P104-100, the data shows a legacy part with no measured performance wins and an end-of-life status. The verdict is unambiguous: the RTX 4080 Mobile wins on compute, features, memory capacity, and architectural efficiency.