NVIDIA GeForce RTX 5070 Mobile vs NVIDIA RTX A400 Comparison

Where Each One Wins

The benchmark data splits these two NVIDIA offerings into completely different performance classes. The GeForce RTX 5070 Mobile wins 8 of the 9 recorded tests, while the RTX A400 takes a single narrow victory in the 2D graphics test. That solitary win is a 2D score of 899 versus 896, a margin of just 0.3%, which places the two effectively equal in that specific workload. Every other test shows the GeForce part ahead by a substantial margin.

The RTX 5070 Mobile dominates in compute-oriented and 3D rendering workloads. Its Geekbench OpenCL score of 122,238 is 435.1% higher than the A400's 22,844, and its Geekbench Vulkan result of 116,960 is 426% higher than 22,237. PassMark G3D shows a 240.2% advantage (20,355 versus 5,983), and PassMark GPU Compute demonstrates a 223.8% lead (8,279 versus 2,557). The GeForce part also leads across all DirectX API tests in PassMark, with margins ranging from 146% in DirectX 9 (214 versus 87) to 418.9% in DirectX 11 (192 versus 37). Even the smaller margins remain decisive: DirectX 10 shows 303.1% (129 versus 32) and DirectX 12 shows 244.4% (93 versus 27).

This pattern indicates a clear use-case split. The RTX 5070 Mobile is designed for performance-sensitive workloads, including modern gaming, GPU-accelerated compute, and high-resolution 3D rendering. The RTX A400, by contrast, occupies a position where 2D desktop acceleration and basic display output are the primary tasks, with its 3D and compute capabilities being comparatively limited. The A400's 35th percentile ranking among all GPUs, versus the 5070 Mobile's 75th percentile, reinforces this positioning.

Architecture Differences

The two cards come from different NVIDIA architecture generations. The RTX 5070 Mobile uses the GB206 chip built on the Blackwell 2.0 architecture, while the RTX A400 uses the GA107 chip from the older Ampere architecture. The manufacturing process differs as well: the 5070 Mobile is fabricated on a 5 nm node at TSMC, whereas the A400 uses an 8 nm Samsung process. The transistor counts reflect this divergence, with the 5070 Mobile packing 21,900 million transistors on a 181 mm² die, giving a density of 121.0 million transistors per square millimeter. The A400 has 8,700 million transistors on a 200 mm² die, for a density of 43.5 million per square millimeter.

The memory subsystems are entirely different in capacity and speed. The RTX 5070 Mobile carries 8 GB of GDDR7 memory on a 128-bit bus, providing 384.0 GB/s of bandwidth. The RTX A400 has 4 GB of GDDR6 on a 64-bit bus, yielding 96.00 GB/s. Both list their memory clock as 1500 MHz, but the effective data rates differ: 24 Gbps for the GeForce part versus 12 Gbps for the A400.

The processing resources are heavily skewed toward the GeForce part. The 5070 Mobile has 4,608 shading units, 144 texture mapping units, 48 ROPs, 36 ray tracing cores, and 144 tensor cores. The A400 has 768 shading units, 24 TMUs, 16 ROPs, 6 RT cores, and 24 tensor cores. These numbers translate to pixel rates of 68.40 GPixel/s versus 28.19 GPixel/s, texture rates of 205.2 GTexel/s versus 42.29 GTexel/s, and FP32 throughput of 13.13 TFLOPS versus 2.706 TFLOPS. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The physical and interface specifications also diverge. The RTX 5070 Mobile is an integrated graphics processor with no slot width, no power connectors, and portable-device-dependent display outputs. It uses a PCIe 5.0 x16 bus interface. The RTX A400 is a single-slot card measuring 163 mm by 69 mm, with four mini-DisplayPort 1.4a outputs, a PCIe 4.0 x8 interface, and no power connectors but a 250 W suggested power supply. Both are rated at 50 W TDP.

Head-to-Head Benchmarks

The largest single performance gap appears in Geekbench OpenCL, where the RTX 5070 Mobile scores 122,238 against the A400's 22,844. That 435.1% lead is the most extreme margin in the entire comparison. Geekbench Vulkan is nearly as lopsided, with 116,960 versus 22,237, a 426% difference. These two results show that the GeForce part has a massive advantage in general-purpose GPU compute through both OpenCL and Vulkan pathways.

PassMark's DirectX tests show a similar pattern. DirectX 11 gives the 5070 Mobile a 418.9% lead (192 versus 37), DirectX 10 shows 303.1% (129 versus 32), and DirectX 12 shows 244.4% (93 versus 27). The smallest DirectX margin is in DirectX 9, where the 5070 Mobile leads by 146% (214 versus 87). These API-specific results suggest the GeForce part scales its advantage across old and new rendering paths, though the relative gap narrows with the older API.

The 3D graphics score from PassMark G3D puts the 5070 Mobile at 20,355 versus 5,983 for the A400, a 240.2% difference. The compute score follows at 223.8% (8,279 versus 2,557). The only test the A400 wins is PassMark G2D, where it scores 899 to the 5070 Mobile's 896, a 0.3% edge. That result is essentially a tie, but it does demonstrate that the A400's 2D acceleration is not compromised relative to the larger part.

Against its nearest rivals, the RTX 5070 Mobile sits within a tight cluster. Its average benchmark score of 29,928 is 0.1% behind the GeForce RTX 3070 Ti (29,945) and 0.5% ahead of the RTX 2080 Ti (29,783). It trails the Radeon RX 6800 by 0.6% (30,095) and the RX 6700 by 1.7% (30,433). The RTX A400, meanwhile, has an average score of 6,078, essentially tied with the GeForce MX230 (6,077, 0% delta) and the Quadro P2000 (6,049, 0.5% ahead). It sits 0.6% behind the Intel Iris Pro Graphics 6200 (6,117) and 1% behind the Radeon 760M (6,019). These rival comparisons place the 5070 Mobile in desktop-class performance territory, while the A400 competes with entry-level mobile parts.

FAQ

Q: Which GPU has higher memory bandwidth?

A: The GeForce RTX 5070 Mobile has 384.0 GB/s from 8 GB of GDDR7 on a 128-bit bus. The RTX A400 has 96.00 GB/s from 4 GB of GDDR6 on a 64-bit bus.

Q: How do the two compare in ray tracing resources?

A: The RTX 5070 Mobile has 36 ray tracing cores, while the RTX A400 has 6 ray tracing cores.

Q: What is the single closest benchmark result between them?

A: The PassMark G2D test, where the RTX A400 scores 899 and the RTX 5070 Mobile scores 896, a 0.3% difference.

Q: Which GPU has a higher transistor density?

A: The RTX 5070 Mobile has 121.0 million transistors per square millimeter on a 5 nm TSMC process. The RTX A400 has 43.5 million per square millimeter on an 8 nm Samsung process.

Q: What are the DirectX 12 scores for each?

A: The RTX 5070 Mobile scores 93, and the RTX A400 scores 27, giving the GeForce part a 244.4% lead.

Q: How do these GPUs rank among all GPUs in the database?

A: The RTX 5070 Mobile is in the 75th percentile, while the RTX A400 is in the 35th percentile.

The Verdict

The data supports a straightforward choice based on workload requirements. The RTX 5070 Mobile is the pick for any task involving 3D rendering, GPU compute, or modern gaming. Its 435.1% lead in OpenCL and 426% lead in Vulkan make it the clear option for compute acceleration. Its 240.2% advantage in PassMark G3D and consistent leads across all DirectX API tests confirm its strength in graphics workloads. The 75th percentile ranking and average score of 29,928 place it alongside desktop GPUs like the RTX 3070 Ti and RX 6800, within 1.7% of each.

The RTX A400 is suitable for systems where 2D desktop acceleration and basic display output are the primary duties. Its 899 G2D score edges out the 5070 Mobile's 896, and its single-slot form factor, 163 mm length, and four mini-DisplayPort 1.4a outputs make it a compact workstation card. Its 35th percentile ranking and average score of 6,078 place it in entry-level territory, comparable to the MX230 and Quadro P2000. For users who need 3D performance, the A400's numbers are not competitive, but its 2D parity and physical design give it a defined role.

The specification differences reinforce this split. The 5070 Mobile uses a newer Blackwell 2.0 architecture, a 5 nm process, 8 GB of GDDR7, and a PCIe 5.0 x16 interface, all pointing to high-throughput workloads. The A400 uses the older Ampere architecture, an 8 nm process, 4 GB of GDDR6, and a PCIe 4.0 x8 interface, consistent with a low-power display adapter. Both share a 50 W TDP and no power connectors, but the 5070 Mobile is an IGP while the A400 is a single-slot add-in card. Choose the 5070 Mobile for performance, the A400 for compact 2D-focused workstation duties.

Specification Differences

• Chip: GB206 (RTX 5070 Mobile) versus GA107 (RTX A400)
• Architecture: Blackwell 2.0 versus Ampere
• Process node: 5 nm TSMC versus 8 nm Samsung
• Transistors: 21,900 million versus 8,700 million
• Die size: 181 mm² versus 200 mm²
• Transistor density: 121.0M / mm² versus 43.5M / mm²
• Memory size: 8 GB versus 4 GB
• Memory type: GDDR7 versus GDDR6
• Memory bus width: 128 bit versus 64 bit
• Memory bandwidth: 384.0 GB/s versus 96.00 GB/s
• Effective memory clock: 24 Gbps versus 12 Gbps
• Shading units: 4,608 versus 768
• Texture mapping units: 144 versus 24
• ROP units: 48 versus 16
• Ray tracing cores: 36 versus 6
• Tensor cores: 144 versus 24
• Pixel rate: 68.40 GPixel/s versus 28.19 GPixel/s
• Texture rate: 205.2 GTexel/s versus 42.29 GTexel/s
• FP32 throughput: 13.13 TFLOPS versus 2.706 TFLOPS
• Base clock: 907 MHz versus 1417 MHz
• Boost clock: 1425 MHz versus 1762 MHz
• Slot width: IGP versus Single-slot
• Bus interface: PCIe 5.0 x16 versus PCIe 4.0 x8
• Display outputs: Portable Device Dependent versus 4x mini-DisplayPort 1.4a
• Suggested PSU: none versus 250 W
• Dimensions: none versus 163 mm 6.4 inches, 69 mm 2.7 inches
• Release date: 2025-04-14 versus 2024-04-15