NVIDIA GeForce RTX 4080 Mobile vs NVIDIA GeForce RTX 5070 Mobile Comparison

Head-to-Head Benchmarks

The recorded data shows a clean sweep for the NVIDIA GeForce RTX 4080 Mobile across all nine benchmark comparisons, with no test favoring the RTX 5070 Mobile. The most decisive margin appears in PassMark GPU Compute, where the RTX 4080 Mobile scores 11,191 against 8,279 for the RTX 5070 Mobile, a 35.2% advantage. This test measures general-purpose compute throughput, and the gap is consistent with the large difference in shading units and tensor cores between the two designs.

The second-largest win comes in PassMark DirectX 9, where the RTX 4080 Mobile posts 286 versus 214, a 33.6% lead. Legacy DirectX 9 workloads tend to scale with raw pixel and texture throughput, and the RTX 4080 Mobile's pixel rate of 133.2 GPixel/s and texture rate of 386.3 GTexel/s are well ahead of the RTX 5070 Mobile's 68.40 GPixel/s and 205.2 GTexel/s. Next is Geekbench OpenCL, with the RTX 4080 Mobile at 159,575 and the RTX 5070 Mobile at 122,238, representing a 30.5% difference. OpenCL performance often reflects the balance of compute units and memory bandwidth, and the RTX 4080 Mobile has both a higher FP32 throughput and a wider memory interface.

The PassMark DirectX 11 test shows a 27.1% gap, with scores of 244 and 192. This is a common API for modern games, and the result indicates that the RTX 4080 Mobile maintains a substantial edge in a typical gaming workload. Geekbench Vulkan follows at 24.7%, with scores of 145,807 and 116,960. Vulkan is a lower-level API that can expose raw hardware capabilities, and the RTX 4080 Mobile's advantage here aligns with its larger execution resource pool. PassMark DirectX 10 also favors the RTX 4080 Mobile by 21.7%, with scores of 157 and 129.

The PassMark G3D test, which is a composite of multiple 3D rendering scenarios, shows the RTX 4080 Mobile at 24,926 versus 20,355, a 22.5% difference. This is a broad measure of overall graphics performance, and the result reinforces the pattern seen in the API-specific tests. The narrowest margins occur in PassMark DirectX 12 and PassMark G2D. In DirectX 12, the RTX 4080 Mobile scores 96 against 93, a 3.2% edge. This suggests that the newer Blackwell architecture of the RTX 5070 Mobile closes the gap significantly under a modern low-level API. In the 2D test, the RTX 4080 Mobile manages 929 versus 896, a 3.7% lead. The two cards are essentially tied in 2D workloads, which are rarely bottlenecked by the GPU's graphics pipeline.

The average benchmark score for the RTX 4080 Mobile is 38,135, placing it at the 81st percentile among all GPUs in the database. The RTX 5070 Mobile averages 29,928, at the 75th percentile. The nearest rival for the RTX 4080 Mobile is the NVIDIA GeForce MX570, with an average score of 38,299, a delta of -0.4%, meaning the MX570 is essentially equivalent in aggregate performance. The RTX 5080 Mobile sits at 38,349, a -0.6% delta, and the RTX 4070 and Tesla P4 are both 1.3% behind. For the RTX 5070 Mobile, the closest competitor is the RTX 3070 Ti at 29,945, a -0.1% delta, followed by the RTX 2080 Ti at 29,783, which is 0.5% ahead. The AMD Radeon RX 6800 is -0.6% behind, and the RX 6700 is -1.7% behind.

The Verdict

The benchmark data indicates that the RTX 4080 Mobile is the stronger performer in every recorded test, with an average score advantage of approximately 27% over the RTX 5070 Mobile. The largest wins are in compute-heavy workloads, where the RTX 4080 Mobile leads by 35.2% in PassMark GPU Compute and 30.5% in Geekbench OpenCL. The smallest lead is in DirectX 12, where the RTX 4080 Mobile wins by only 3.2%, suggesting that the RTX 5070 Mobile's architecture is more efficient in that specific API.

For users who prioritize raw graphics throughput, legacy API compatibility, or compute tasks such as rendering or physics simulation, the RTX 4080 Mobile is the clear choice based on the recorded data. Its 12 GB of GDDR6 memory and 192-bit bus provide 432.0 GB/s of bandwidth, which is 12.5% higher than the RTX 5070 Mobile's 384.0 GB/s. The RTX 4080 Mobile also has 7,424 shading units, 232 tensor cores, and 58 RT cores, versus 4,608 shading units, 144 tensor cores, and 36 RT cores on the RTX 5070 Mobile.

The RTX 5070 Mobile, however, has a significantly lower TDP of 50 W compared to 110 W for the RTX 4080 Mobile. This means the RTX 5070 Mobile is more suitable for thin-and-light laptop designs where power draw and thermal output are constrained. The RTX 5070 Mobile also uses the newer Blackwell 2.0 architecture and supports PCIe 5.0 x16, while the RTX 4080 Mobile uses Ada Lovelace and PCIe 4.0 x16. The 3.2% margin in DirectX 12 indicates that the newer architecture is not far behind in that specific workload, even with fewer execution resources.

Users who need the highest performance in a laptop GPU, and who are willing to accept a higher power draw, should select the RTX 4080 Mobile. Users who require a lower-power GPU for a portable chassis, and who can tolerate a performance deficit of roughly 25-35% depending on the workload, should consider the RTX 5070 Mobile. The choice depends entirely on the power envelope and the specific application mix.

Architecture Differences

The RTX 4080 Mobile is built on the Ada Lovelace architecture using the AD104 chip, while the RTX 5070 Mobile uses the Blackwell 2.0 architecture with the GB206 chip. Both are fabricated on a 5 nm process at TSMC, and the transistor densities are nearly identical at 121.8 million transistors per square millimeter for the RTX 4080 Mobile and 121.0 million for the RTX 5070 Mobile. However, the die sizes differ substantially: the AD104 measures 294 mm² and contains 35,800 million transistors, while the GB206 measures 181 mm² and contains 21,900 million transistors. The larger die on the RTX 4080 Mobile provides more physical space for execution units, which explains its higher shading unit count of 7,424 versus 4,608.

Clock speeds also differ. The RTX 4080 Mobile has a base clock of 1290 MHz and a boost clock of 1665 MHz. The RTX 5070 Mobile runs at a lower base clock of 907 MHz and a boost clock of 1425 MHz. Despite the lower clocks, the RTX 5070 Mobile uses GDDR7 memory, whereas the RTX 4080 Mobile uses GDDR6. The memory clock for the RTX 4080 Mobile is 2250 MHz, which translates to 18 Gbps effective, while the RTX 5070 Mobile runs at 1500 MHz, or 24 Gbps effective. The RTX 5070 Mobile's GDDR7 is faster per pin, but the RTX 4080 Mobile's 192-bit bus versus 128-bit bus gives it a higher total bandwidth.

The bus interface is another difference: the RTX 4080 Mobile uses PCIe 4.0 x16, while the RTX 5070 Mobile uses PCIe 5.0 x16. The newer standard doubles the per-lane bandwidth, though the practical impact on GPU performance is often limited by the workload. Both cards support the same API set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both are listed as active production status, and both are IGP slot width with no power connectors, as they are designed for mobile integration.

The RTX 4080 Mobile was released in January 2023, with the GeForce 30 Mobile as its predecessor and the GeForce 50 Mobile as its successor. The RTX 5070 Mobile was released in April 2025, with the GeForce 40 Mobile as its predecessor and no recorded successor. The RTX 4080 Mobile belongs to the GeForce 40-series and the GeForce 40 Mobile generation, while the RTX 5070 Mobile belongs to the GeForce 50-series and the GeForce 50 Mobile generation.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The RTX 4080 Mobile has an average benchmark score of 38,135, while the RTX 5070 Mobile averages 29,928. This places the RTX 4080 Mobile at the 81st percentile of all GPUs, versus the 75th percentile for the RTX 5070 Mobile.

Q: What is the largest performance gap between the two cards?

A: The largest gap is in PassMark GPU Compute, where the RTX 4080 Mobile scores 11,191 against 8,279 for the RTX 5070 Mobile, a difference of 35.2%.

Q: Is there any test where the RTX 5070 Mobile wins?

A: No. The recorded data shows the RTX 4080 Mobile winning all nine head-to-head benchmark comparisons, with no wins recorded for the RTX 5070 Mobile.

Q: How do the memory specifications differ?

A: The RTX 4080 Mobile has 12 GB of GDDR6 on a 192-bit bus, providing 432.0 GB/s of bandwidth. The RTX 5070 Mobile has 8 GB of GDDR7 on a 128-bit bus, providing 384.0 GB/s of bandwidth.

Q: What are the TDP values for each GPU?

A: The RTX 4080 Mobile has a TDP of 110 W, while the RTX 5070 Mobile has a TDP of 50 W. The RTX 5070 Mobile consumes less than half the power of the RTX 4080 Mobile.

Q: Which GPU uses a newer PCIe interface?

A: The RTX 5070 Mobile uses PCIe 5.0 x16, while the RTX 4080 Mobile uses PCIe 4.0 x16.

Where Each One Wins

The RTX 4080 Mobile wins in every benchmark category recorded, but the magnitude of its wins varies by workload. In compute-heavy tasks, the advantage is substantial: the PassMark GPU Compute score is 35.2% higher, and the Geekbench OpenCL score is 30.5% higher. These tests exercise the raw arithmetic throughput of the GPU, and the RTX 4080 Mobile's higher FP32 rating of 24.72 TFLOPS versus 13.13 TFLOPS for the RTX 5070 Mobile explains the gap. The RTX 4080 Mobile also has more tensor cores (232 versus 144), which can accelerate AI and machine learning workloads.

In legacy DirectX APIs, the RTX 4080 Mobile's lead is also strong. The DirectX 9 test shows a 33.6% advantage, and the DirectX 10 test shows a 21.7% advantage. These older APIs often rely on fixed-function hardware such as texture mapping units and raster operations pipelines, where the RTX 4080 Mobile has 232 TMUs and 80 ROPs versus 144 TMUs and 48 ROPs on the RTX 5070 Mobile. The DirectX 11 test shows a 27.1% lead, which is typical for a modern gaming API that still uses some legacy paths.

The RTX 5070 Mobile's closest performance comes in DirectX 12, where the gap narrows to 3.2%. This is notable because DirectX 12 is a low-level API that can better utilize the newer Blackwell 2.0 architecture. The RTX 5070 Mobile also comes close in the PassMark G2D test, trailing by only 3.7%. These results suggest that in modern, well-optimized workloads, the architectural efficiency of the RTX 5070 Mobile partially compensates for its smaller execution resource pool.

The RTX 5070 Mobile wins in power efficiency, with a TDP of 50 W versus 110 W for the RTX 4080 Mobile. For laptops with smaller cooling solutions or smaller batteries, the RTX 5070 Mobile is the more practical choice. The RTX 4080 Mobile, by contrast, requires a larger chassis and more robust thermal management to sustain its higher performance. The RTX 5070 Mobile also uses newer GDDR7 memory, which operates at a higher effective speed per pin (24 Gbps versus 18 Gbps), and it supports PCIe 5.0 x16, which may be relevant for future external GPU enclosures or high-bandwidth storage configurations.

Specification Differences

The two GPUs differ in several key specifications. The RTX 4080 Mobile uses the AD104 chip with the Ada Lovelace architecture, while the RTX 5070 Mobile uses the GB206 chip with the Blackwell 2.0 architecture. The process node is the same (5 nm, TSMC), but the die size and transistor count differ: 294 mm² and 35,800 million transistors for the RTX 4080 Mobile, versus 181 mm² and 21,900 million transistors for the RTX 5070 Mobile.

Clock speeds are lower on the RTX 5070 Mobile: a base clock of 907 MHz and a boost clock of 1425 MHz, compared to 1290 MHz and 1665 MHz on the RTX 4080 Mobile. The memory configuration also differs: the RTX 4080 Mobile has 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth, while the RTX 5070 Mobile has 8 GB of GDDR7 on a 128-bit bus with 384.0 GB/s bandwidth. The memory clock is 2250 MHz (18 Gbps effective) on the RTX 4080 Mobile and 1500 MHz (24 Gbps effective) on the RTX 5070 Mobile.

Execution resources are notably different. The RTX 4080 Mobile has 7,424 shading units, 232 TMUs, 80 ROPs, 58 RT cores, and 232 tensor cores. The RTX 5070 Mobile has 4,608 shading units, 144 TMUs, 48 ROPs, 36 RT cores, and 144 tensor cores. This results in a pixel rate of 133.2 GPixel/s and a texture rate of 386.3 GTexel/s for the RTX 4080 Mobile, versus 68.40 GPixel/s and 205.2 GTexel/s for the RTX 5070 Mobile. FP32 and FP16 throughput are both 24.72 TFLOPS for the RTX 4080 Mobile and 13.13 TFLOPS for the RTX 5070 Mobile, with a 1:1 ratio in both cases.

The TDP differs significantly: 110 W for the RTX 4080 Mobile and 50 W for the RTX 5070 Mobile. Both use an IGP slot width and have no power connectors. The bus interface is PCIe 4.0 x16 for the RTX 4080 Mobile and PCIe 5.0 x16 for the RTX 5070 Mobile. The release dates are January 2023 for the RTX 4080 Mobile and April 2025 for the RTX 5070 Mobile. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and both have portable-device-dependent display outputs. Neither card has a recorded launch MSRP.