NVIDIA GeForce RTX 4050 Mobile vs NVIDIA RTX A4000 Mobile Comparison

FAQ

Q: Which GPU has the higher average benchmark score in the database?

A: The NVIDIA RTX A4000 Mobile posts an average benchmark score of 21379, while the NVIDIA GeForce RTX 4050 Mobile records 19049. The A4000 Mobile sits at the 66th percentile of all GPUs, compared to the 63rd percentile for the RTX 4050 Mobile.

Q: How large is the performance gap in Geekbench OpenCL?

A: The RTX A4000 Mobile scores 97178 in Geekbench OpenCL, which is 30% higher than the RTX 4050 Mobile’s 74748. This is the largest single-test margin in the head-to-head comparison.

Q: Does the RTX 4050 Mobile win any benchmark categories?

A: Yes, it wins four of the nine head-to-head tests. Its most decisive victory is in Passmark DirectX 9, where it scores 184 versus 157, a 14.7% advantage. It also leads in Geekbench Vulkan (75235 vs 73002), Passmark DirectX 11 (130 vs 127), and Passmark G2D (633 vs 585).

Q: How do the two GPUs compare in compute workloads?

A: The RTX A4000 Mobile leads in Passmark GPU Compute with a score of 6394, which is 7.5% higher than the RTX 4050 Mobile’s 5947. This aligns with its higher FP32 throughput of 17.20 TFLOPS versus 8.986 TFLOPS.

Q: What is the transistor density difference between the two chips?

A: The RTX 4050 Mobile’s AD107 chip, built on a 5 nm process at TSMC, achieves a transistor density of 118.9M per mm². The RTX A4000 Mobile’s GA104, on Samsung’s 8 nm process, has a density of 44.4M per mm², roughly 2.7 times lower.

Q: Which GPU has the higher memory bandwidth?

A: The RTX A4000 Mobile offers 384.0 GB/s across a 256-bit bus, exactly double the RTX 4050 Mobile’s 192.0 GB/s over a 96-bit bus. The A4000 also has 8 GB of GDDR6 versus 6 GB for the 4050 Mobile.

Architecture Differences

The two GPUs represent distinct architectural generations from NVIDIA. The RTX A4000 Mobile is built on the Ampere architecture using the GA104 chip, manufactured on Samsung’s 8 nm process. The RTX 4050 Mobile uses the Ada Lovelace architecture with the AD107 chip, fabricated on TSMC’s 5 nm node. This process shift is significant: the 5 nm node enables a much higher transistor density (118.9M / mm² vs 44.4M / mm²), allowing the smaller 159 mm² die to pack 18,900 million transistors, slightly more than the 17,400 million in the 392 mm² GA104.

The core configurations diverge sharply. The RTX A4000 Mobile carries 5120 shading units, 160 texture mapping units, and 80 render output units. It also has 40 ray tracing cores and 160 tensor cores. In contrast, the RTX 4050 Mobile has exactly half the shading units (2560), half the TMUs (80), and fewer ROPs (48). Its ray tracing core count is 20, and tensor core count is 80. Despite fewer cores, the Ada Lovelace architecture implements these units more efficiently per clock, partially offsetting the raw count disadvantage.

Clock speeds tell a different story. The RTX 4050 Mobile runs at a base clock of 1455 MHz and boosts to 1755 MHz. The RTX A4000 Mobile starts lower at 1140 MHz base and boosts to 1680 MHz. The higher clocks on the 4050 Mobile help it close some of the gap in compute-heavy workloads, though the A4000’s much larger core count still yields higher peak throughput numbers.

Memory subsystems are fundamentally different. The RTX A4000 Mobile uses an 8 GB GDDR6 configuration with a 256-bit bus, producing 384.0 GB/s of bandwidth. The RTX 4050 Mobile has 6 GB of GDDR6 on a 96-bit bus, resulting in 192.0 GB/s. The memory clock also differs: the A4000 runs at 1500 MHz (12 Gbps effective), while the 4050 Mobile runs at 2000 MHz (16 Gbps effective). The narrower bus on the 4050 Mobile cannot compensate for the higher clock, leaving it at half the bandwidth.

Power characteristics are markedly different. The RTX A4000 Mobile has a TDP of 115 W, while the RTX 4050 Mobile is rated at 50 W. Both use no external power connectors and are portable-device dependent for display outputs. The bus interface also differs: the A4000 Mobile uses PCIe 4.0 x16, while the 4050 Mobile uses PCIe 4.0 x8.

API support is identical: both feature DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The production statuses differ, with the A4000 Mobile marked as end-of-life and the 4050 Mobile active. Release dates are about two years apart: the A4000 Mobile launched in April 2021, the 4050 Mobile in January 2023.

The Verdict

The data indicates two different design philosophies. The RTX A4000 Mobile is a professional mobile workstation part with a larger core configuration and double the memory bandwidth. It wins five of nine head-to-head benchmarks, including the decisive Geekbench OpenCL test by 30% and Passmark GPU Compute by 7.5%. Its average benchmark score is 12.2% higher than the RTX 4050 Mobile’s, and it ranks three percentile points higher in the global database.

The RTX 4050 Mobile, as a consumer gaming part, is more efficient in power draw and wins in specific legacy or API-bound workloads. Its wins in Passmark DirectX 9 (14.7% ahead), Geekbench Vulkan (3% ahead), and Passmark G2D (7.6% ahead) suggest it handles certain driver-optimized or older workloads better. However, its overall average score is lower, and it loses the main DirectX 12 and compute tests.

For users prioritizing raw compute throughput, memory bandwidth, and overall average performance, the RTX A4000 Mobile is the stronger choice based on recorded measurements. For those needing lower power consumption (50 W versus 115 W) and better performance in Vulkan or legacy DirectX 9 scenarios, the RTX 4050 Mobile has specific advantages. The RTX A4000 Mobile’s end-of-life status versus the active production status of the RTX 4050 Mobile may also factor into availability considerations, though the database records show the older part still holds the performance edge in most metrics.

Specification Differences

| Specification | NVIDIA RTX A4000 Mobile | NVIDIA GeForce RTX 4050 Mobile |

| :--- | :--- | :--- |

| Architecture | Ampere | Ada Lovelace |

| Chip | GA104 | AD107 |

| Process Node | 8 nm (Samsung) | 5 nm (TSMC) |

| Transistors | 17,400 million | 18,900 million |

| Die Size | 392 mm² | 159 mm² |

| Transistor Density | 44.4M / mm² | 118.9M / mm² |

| Base Clock | 1140 MHz | 1455 MHz |

| Boost Clock | 1680 MHz | 1755 MHz |

| Memory Clock | 1500 MHz, 12 Gbps effective | 2000 MHz, 16 Gbps effective |

| Memory Size | 8 GB | 6 GB |

| Memory Bus Width | 256 bit | 96 bit |

| Memory Bandwidth | 384.0 GB/s | 192.0 GB/s |

| Shading Units | 5120 | 2560 |

| TMUs | 160 | 80 |

| ROPs | 80 | 48 |

| RT Cores | 40 | 20 |

| Tensor Cores | 160 | 80 |

| Pixel Rate | 134.4 GPixel/s | 84.24 GPixel/s |

| Texture Rate | 268.8 GTexel/s | 140.4 GTexel/s |

| FP32 | 17.20 TFLOPS | 8.986 TFLOPS |

| FP16 | 17.20 TFLOPS (1:1) | 8.986 TFLOPS (1:1) |

| TDP | 115 W | 50 W |

| Bus Interface | PCIe 4.0 x16 | PCIe 4.0 x8 |

| Production Status | End-of-life | Active |

| Release Date | 2021-04-11 | 2023-01-02 |

| Predecessor | Quadro Turing-M | GeForce 30 Mobile |

| Successor | Ada-MW | GeForce 50 Mobile |

Head-to-Head Benchmarks

The RTX A4000 Mobile’s most dominant result is in Geekbench OpenCL, where it records 97178 against the RTX 4050 Mobile’s 74748, a 30% advantage. This is the largest delta across all nine compared tests and reflects the A4000’s substantially higher FP32 throughput (17.20 TFLOPS vs 8.986 TFLOPS) and larger memory bus. In Passmark DirectX 10, the A4000 wins by 32.9% (105 vs 79), another significant margin.

The RTX A4000 Mobile also wins Passmark DirectX 12 by 8.2% (66 vs 61) and Passmark GPU Compute by 7.5% (6394 vs 5947). The Passmark G3D result is closer: 14796 versus 14423, a 2.6% edge for the A4000. These wins align with the A4000’s higher core counts and bandwidth.

The RTX 4050 Mobile counters with a 14.7% win in Passmark DirectX 9 (184 vs 157), its best result. It also takes Geekbench Vulkan with 75235 versus 73002, a 3% margin. Passmark DirectX 11 is nearly tied, with the 4050 Mobile ahead by 2.3% (130 vs 127). In Passmark G2D, the 4050 Mobile leads 633 to 585, a 7.6% difference.

The overall tally is five wins for the RTX A4000 Mobile and four for the RTX 4050 Mobile. The average benchmark scores reflect this: 21379 for the A4000 versus 19049 for the 4050. The A4000’s nearest rivals in the database, such as the NVIDIA Quadro RTX 5000 (21629, 1.2% higher), show it sits in a competitive professional tier. The 4050 Mobile’s nearest rival, the NVIDIA RTX 2000 Ada Generation (18954, 0.5% lower), places it in a similar performance class, but with a lower absolute ceiling. The recorded data indicates the A4000 Mobile is the stronger overall performer, while the 4050 Mobile offers targeted wins in specific API workloads.