NVIDIA GeForce RTX 5070 Mobile vs NVIDIA RTX A4000 Comparison

The Verdict

The benchmark database presents a fascinating contrast: the NVIDIA GeForce RTX 5070 Mobile and the NVIDIA RTX A4000 are separated by architecture generation, power envelope, and intended use case, yet their overall performance is remarkably close. The RTX 5070 Mobile edges out the A4000 in five of nine head-to-head tests, while the A4000 claims four wins. The average benchmark scores reinforce this near-parity: the RTX 5070 Mobile sits at 29,928, while the A4000 records 26,683, a gap of roughly 12%. However, the percentile rankings tell a similar story, with the RTX 5070 Mobile in the 75th percentile of all GPUs and the A4000 in the 72nd.

For users prioritizing modern DirectX 12 workloads and raw OpenCL compute, the RTX 5070 Mobile is the clear choice, as it leads by 29.2% in Passmark DirectX 12 and 15.6% in Geekbench OpenCL. Conversely, for those who need maximum VRAM capacity, 16 GB versus 8 GB, or who rely on Vulkan performance, the RTX A4000 holds the advantage. The A4000 is a workstation card with a single-slot form factor and four DisplayPort outputs, while the RTX 5070 Mobile is an integrated graphics processor (IGP) for portable devices. The data suggests that a gamer or mobile workstation user should prefer the RTX 5070 Mobile for its efficiency and modern feature set, while a professional needing large memory buffers and multi-display output should choose the A4000.

Architecture Differences

The two GPUs come from different eras of NVIDIA's design philosophy. The RTX 5070 Mobile uses the GB206 chip, built on the Blackwell 2.0 architecture, and is fabricated on a 5 nm process at TSMC. In contrast, the RTX A4000 uses the GA104 chip, based on the older Ampere architecture, and is manufactured on an 8 nm process at Samsung. This process difference is stark: the RTX 5070 Mobile packs 21,900 million transistors into a tiny 181 mm² die, yielding a transistor density of 121.0 million per square millimeter. The A4000, meanwhile, contains 17,400 million transistors spread across a much larger 392 mm² die, with a density of just 44.4 million per square millimeter. The data clearly shows that Blackwell 2.0 is a far denser, more modern design.

Memory technology also diverges sharply. The RTX 5070 Mobile uses 8 GB of GDDR7 memory on a 128-bit bus, delivering 384.0 GB/s of bandwidth. The A4000 uses 16 GB of GDDR6 on a 256-bit bus, providing 448.0 GB/s. Despite having half the memory capacity and a narrower bus, the RTX 5070 Mobile's GDDR7 runs at 24 Gbps effective, while the A4000's GDDR6 runs at 14 Gbps effective. The result is that the newer card nearly matches the older one in bandwidth, despite its smaller memory pool. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, indicating feature parity at the API level.

The compute architectures differ in scale. The RTX 5070 Mobile has 4,608 shading units, 144 texture mapping units, and 48 ROPs. The A4000 counters with 6,144 shading units, 192 TMUs, and 96 ROPs. The A4000 also has more ray tracing cores (48 versus 36) and more tensor cores (192 versus 144). Yet, the newer card achieves these lower counts with a much lower thermal design power (TDP) of 50 W versus 140 W. Clock speeds tell a nuanced story: the RTX 5070 Mobile has a base clock of 907 MHz and a boost of 1425 MHz, while the A4000 has a lower base of 735 MHz but a higher boost of 1560 MHz. The A4000's higher boost clock, combined with its larger shader count, yields higher theoretical rates: 19.17 TFLOPS FP32 versus 13.13 TFLOPS, and a pixel rate of 149.8 GPixel/s versus 68.40 GPixel/s.

Head-to-Head Benchmarks

The recorded data reveals a clear split in workload preferences. The RTX 5070 Mobile's most dominant win comes in Passmark DirectX 12, where it scores 93 against the A4000's 72, a 29.2% advantage. This is a significant margin and suggests the newer architecture handles modern graphics APIs substantially better. In Passmark DirectX 11, the RTX 5070 Mobile again wins, scoring 192 versus 158, a 21.5% lead. Geekbench OpenCL also favors the RTX 5070 Mobile, with a score of 122,238 versus 105,739, a 15.6% edge. These results indicate that in compute-heavy, general-purpose workloads, the Blackwell architecture is more efficient despite fewer shading units.

The RTX A4000 fights back in Vulkan and compute-specific tests. In Geekbench Vulkan, the A4000 scores 127,645 versus the RTX 5070 Mobile's 116,960, an 8.4% margin. Passmark GPU Compute shows a more pronounced win for the A4000: 9,760 versus 8,279, a 15.2% advantage. This pattern suggests that the A4000's larger shader count and higher boost clock give it an edge in raw compute throughput, especially in Vulkan's lower-overhead environment. The A4000 also wins in Passmark DirectX 9 (240 versus 214, a 10.8% lead) and in Passmark G2D (1,024 versus 896, a 12.5% lead), indicating better performance in legacy DirectX workloads and 2D graphics operations.

The overall 3D performance metric, Passmark G3D, goes to the RTX 5070 Mobile by a slim margin: 20,355 versus 19,459, a 4.6% edge. The DirectX 10 test is nearly a tie, with the RTX 5070 Mobile scoring 129 versus 126, a 2.4% difference. The final tally of five wins for the RTX 5070 Mobile and four for the A4000 reflects this balanced competition, but the magnitude of the wins matters: the RTX 5070 Mobile's victories in DirectX 11 and 12 are larger than the A4000's wins in compute and Vulkan. The data implies that for modern gaming and general compute, the RTX 5070 Mobile is the stronger performer, while the A4000 retains advantages in specific professional workflows.

Specification Differences

The most obvious difference is memory capacity: the RTX 5070 Mobile has 8 GB, while the A4000 has 16 GB. This doubles the available VRAM for the workstation card. The memory type also differs, with GDDR7 on the newer card and GDDR6 on the older one. Bus width is another separator: 128-bit for the RTX 5070 Mobile versus 256-bit for the A4000. Bandwidth favors the A4000 at 448.0 GB/s versus 384.0 GB/s.

The power profiles are dramatically different. The RTX 5070 Mobile has a TDP of 50 W and uses no power connectors, as it is an integrated graphics processor. The A4000 draws 140 W and requires a single 6-pin power connector, with a suggested power supply of 300 W. The form factors reflect their intended environments: the RTX 5070 Mobile is listed as IGP (integrated graphics processor), while the A4000 is a single-slot card measuring 241 mm in length and 112 mm in height. The A4000 offers four DisplayPort 1.4a outputs, while the RTX 5070 Mobile's display outputs are listed as portable device dependent.

The bus interfaces differ by one generation: PCIe 5.0 x16 for the RTX 5070 Mobile, PCIe 4.0 x16 for the A4000. The production status also diverges, with the RTX 5070 Mobile listed as Active and the A4000 as End-of-life. Release dates are roughly four years apart, with the RTX 5070 Mobile launching in April 2025 and the A4000 in April 2021. The A4000's predecessor is Quadro Turing and its successor is Workstation Ada, while the RTX 5070 Mobile's predecessor is GeForce 40 Mobile.

The chip specifications show the A4000 has more of almost everything: 6,144 shading units versus 4,608, 192 TMUs versus 144, 96 ROPs versus 48, 48 RT cores versus 36, and 192 tensor cores versus 144. The A4000 also has higher pixel rate (149.8 GPixel/s versus 68.40 GPixel/s), higher texture rate (299.5 GTexel/s versus 205.2 GTexel/s), and higher FP32 throughput (19.17 TFLOPS versus 13.13 TFLOPS). The process node, die size, and transistor counts are all different, as detailed earlier.

FAQ

Q: Which GPU has higher memory bandwidth?

A: The NVIDIA RTX A4000 has higher memory bandwidth at 448.0 GB/s, compared to 384.0 GB/s for the RTX 5070 Mobile. This is despite the A4000 using GDDR6 memory on a 256-bit bus, while the RTX 5070 Mobile uses GDDR7 on a 128-bit bus.

Q: How do the two cards compare in DirectX 12 performance?

A: The RTX 5070 Mobile is significantly ahead in Passmark DirectX 12, scoring 93 versus 72 for the A4000, a 29.2% advantage. This suggests the newer Blackwell architecture handles modern APIs more efficiently.

Q: Which GPU is better for Vulkan workloads?

A: The RTX A4000 wins in Geekbench Vulkan with a score of 127,645 versus 116,960 for the RTX 5070 Mobile, an 8.4% lead. The A4000's larger shader count and higher boost clock contribute to this advantage.

Q: What is the difference in thermal design power?

A: The RTX 5070 Mobile has a TDP of 50 W, while the RTX A4000 has a TDP of 140 W. The RTX 5070 Mobile uses no power connectors, whereas the A4000 requires a single 6-pin connector and a suggested 300 W power supply.

Q: Which GPU has more memory capacity?

A: The RTX A4000 has 16 GB of memory, twice the 8 GB found on the RTX 5070 Mobile. This makes the A4000 more suitable for large datasets and multi-display professional workloads.

Q: How do their compute scores compare?

A: The RTX A4000 leads in Passmark GPU Compute with 9,760 versus 8,279 for the RTX 5070 Mobile, a 15.2% difference. However, the RTX 5070 Mobile wins in Geekbench OpenCL with 122,238 versus 105,739, a 15.6% edge.

Where Each One Wins

The RTX 5070 Mobile wins in scenarios that favor modern API efficiency and low power consumption. Its 29.2% lead in DirectX 12 and 21.5% lead in DirectX 11 make it the stronger choice for contemporary gaming and DirectX-based applications. The 15.6% Geekbench OpenCL win suggests it handles general-purpose compute tasks well, despite having fewer shading units. The 4.6% G3D win and 2.4% DirectX 10 win round out its dominance in 3D rendering. With a 50 W TDP and no power connectors, it is clearly designed for portable devices where thermal and power budgets are tight. The data indicates this GPU is ideal for thin-and-light gaming laptops and mobile workstations that need modern graphics features without the power draw of a discrete card.

The RTX A4000 wins in professional and legacy scenarios. Its 15.2% Passmark GPU Compute lead and 8.4% Geekbench Vulkan win make it a strong candidate for compute-heavy applications that leverage Vulkan, such as certain scientific computing and rendering workloads. The 10.8% DirectX 9 lead and 12.5% G2D win show it handles older software and 2D graphics tasks better. The 16 GB memory capacity and 448.0 GB/s bandwidth are critical for large models and textures, while the four DisplayPort 1.4a outputs support multi-monitor professional setups. The single-slot form factor and 140 W TDP make it suitable for workstation towers where space and power are less constrained. The data suggests this GPU is the better option for professionals who prioritize compute throughput, memory capacity, and legacy software compatibility over modern API performance.